62 results about "Atomic battery" patented technology

The invention discloses a minitype nuclear battery, which mainly solves the problem that the nuclear battery manufacturing is easier than the SiC technology realization. A low doping epitaxial layer (2) and an ohmic contact electrode (3) are respectively arranged at the upper part and the lower part of an N-type high doping SiC substrate (1), wherein, a circular schottky contact layer (4) is deposited on the upper surface of the low doping epitaxial layer (2), and a SiO2 passivating layer (5) and a bonding layer (7) are arranged on the circumference at the outer edge of the schottky contact layer. The schottky contact layer (4) and a schottky contact electrode (6) are formed by adopting an identical technology, that is, a schottky contact hole is etched by adopting wet process in the center position of the SiO2 passivating layer (5), and Ni, Pt or Au with the thickness being 5 to 20 nm deposited on the SiO2 passivating layer on the hole or at the periphery of the hole, and the schottky contact layer (4) and the schottky contact electrode (6) are respectively formed after the SiO2 passivating layer is peeled off. The minitype nuclear battery has the advantages of simple technology and high conversion efficiency, and is applicable in directly converting the nuclear energy radiated by isotopes into the electric energy.

The invention discloses a PIN type nuclear battery and a preparation method thereof. The compound epitaxial technique of twice MOCVD epitaxy and once HVPE epitaxy is adopted to grow and obtain a lining, i.e. a PIN unit material structure with an n type GaN doping layer, an insulating layer and a p type GaN doping layer. Then, semiconductor micro-processing is adopted for splashing and generating a corresponding contact electrode so as to form a basic battery unit. An isotope is coupled to the p type contact electrode, and then the nuclear battery is obtained after packaging. As the service life of the nuclear battery is determined by the half-life of the isotope, in the invention, the isotope type (pure beta isotope) with simple protection can be flexibly used so as to greatly improve the energy conversion efficiency and the energy density (energy capacity) of the nuclear battery, prolong the service life of the nuclear battery and provide an effective approach for reasonably reusing waste materials.

We introduce a new technology for Manufacturable, High Power Density, High Volume Utilization Nuclear Batteries. Betavoltaic batteries are an excellent choice for battery applications which require long life, high power density, or the ability to operate in harsh environments. In order to optimize the performance of betavoltaic batteries for these applications or any other application, it is desirable to maximize the efficiency of beta particle energy conversion into power, while at the same time increasing the power density of an overall device. The small (submicron) thickness of the active volume of both the isotope layer and the semiconductor device is due to the short absorption length of beta electrons. The absorption length determines the self absorption of the beta particles in the radioisotope layer as well as the range, or travel distance, of the betas in the semiconductor converter which is typically a semiconductor device comprising at least one PN junction. Various devices and methods to solve the current industry problems and limitations are presented here.

The invention discloses a PN junction or PIN junction type micro nuclear battery and a manufacturing method thereof, belonging to the fields of semiconductor, nuclear physics and micro energy source. The battery is provided with a protection ring 6 in the periphery ring-shaped region of a p+ type semiconductor layer 5 on the basis of traditional PN junction or PIN junction type micro nuclear battery; meanwhile a protection ring contact electrode 8 is arranged above the protection ring 6 for leading an electrical signal out; in addition, the manufacturing method of the nuclear battery is also disclosed. In the micro nuclear battery disclosed by the invention, the added protection ring inhibits surface leakage and influence of interface state current on radiation induced current, indirectly increases open circuit voltage, and also improves sensibility of elements on low-energy radioactive source, thus improving energy conversion efficiency of elements.

We introduce a new technology for Manufactureable, High Power Density, High Volume Utilization Nuclear Batteries. Betavoltaic batteries are an excellent choice for battery applications which require long life, high power density, or the ability to operate in harsh environments. In order to optimize the performance of betavoltaic batteries for these applications or any other application, it is desirable to maximize the efficiency of beta particle energy conversion into power, while at the same time increasing the power density of an overall device. The small (submicron) thickness of the active volume of both the isotope layer and the semiconductor device is due to the short absorption length of beta electrons. The absorption length determines the self absorption of the beta particles in the radioisotope layer as well as the range, or travel distance, of the betas in the semiconductor converter which is typically a semiconductor device comprising at least one PN junction. Various devices and methods to solve the current industry problems and limitations are presented here.

The invention discloses a fluorescent layer, a preparation method thereof, and an application of the fluorescent layer in nuclear batteries. A fluorescent powder layer is arranged on a glass substrate by a physical sedimentation method. The fluorescent layer is used in a nuclear battery structure and arranged between a radiation source and a photovoltaic semiconductor assembly. The fluorescent layer is used as an intermediate energy conversion medium from radiation energy to electric energy. Radiation damage of the radiation source to the photovoltaic semiconductor assembly is effectively isolated, the service life of the nuclear battery is prolonged, and the problem that a semiconductor in a radiation voltaic effect nuclear battery is easily damaged by radiation is solved. A Beta radiation source, the fluorescent layer and a photovoltaic assembly are combined into a whole by a laminated arrangement mode. The structure is compact. The effective action area can be increased. The output power of the battery can be improved. The nuclear battery has high mobility and good safety performance, and is applicable to electronic devices like monitors, signal receivers and micro controllers.

A completions assembly having an autonomous self-sustaining portion powered by an atomic battery. The atomic battery may be of a non-based beta voltaic variety configured to provide uninterrupted power to the autonomous portion of the assembly for substantially the life of the well. Thus, continuous monitoring of well conditions or low power actuations, via sensors and / or actuators of the autonomous portion, may be supported. As a result, the autonomous portion may be operated in a fully wireless manner without the requirement of hard wiring to the main bore / surface connected portion of the completions assembly.

The invention discloses a Schottky concretionary battery with a protection ring structure and a manufacture method thereof, and belongs to the field of semiconductor, nuclear physics and micro power. The protection ring 6 of the battery is positioned at the peripheral annular region of a potential barrier metal layer 7 above an intrinsic i layer 4. Electronic signals are led out of an interface of a passivation layer 5 and the potential barrier metal layer 7 through a top electrode metal layer 8. All regions except the potential barrier metal layer 7 and the protection ring 6 above the intrinsic i layer 4 are covered by the passivation layer 5. Isotope 9 is covered above the potential barrier metal layer 7. An n<+>-type semiconductor 3, an Ohmic contact layer 2 and a bottom electrode metal layer 1 with the same shape and size are arranged under the intrinsic i layer 4 in order. In addition, the invention further discloses the manufacture method for the atomic battery. The micro concretionary battery with the protection ring inhabits the influence of surface leakage and interface-state current on radiation generated current, indirectly improves an open circuit voltage, and also increases the sensibility of components for low energy radioactive source so as to improve the energy conversion efficiency of components.

The invention discloses a PN type nuclear battery and a preparation method thereof. The compound epitaxial technique of twice MOCVD epitaxy and once HVPE epitaxy is adopted to grow and obtain a lining, i.e. a PN unit material structure with an n type GaN doping layer and a p type GaN doping layer. Then, semiconductor micro-processing is adopted for splashing and generating a corresponding contact electrode so as to form a basic battery unit. An isotope is coupled to the p type contact electrode, and then the nuclear battery is obtained after packaging. As the service life of the nuclear battery is determined by the half-life of the isotope, in the invention, the isotope type (pure beta isotope) with simple protection can be flexibly used so as to greatly improve the energy conversion efficiency and the energy density (energy capacity) of the nuclear battery, prolong the service life of the nuclear battery and provide an effective approach for reasonably reusing waste materials.

The invention discloses a parallel type PIN type alpha irradiation battery and a preparing method thereof to mainly solve the problems that a current nuclear battery is low in energy converting ratio and output power. The parallel type PIN type alpha irradiation battery comprises an upper PIN junction, a lower PIN junction and alpha irradiation sources, wherein the upper PIN junction and the lower PIN junction are connected in parallel, the lower PIN junction comprises an N type ohmic contact electrode, an N type highly-doped 4H-SiC substrate, an N type lightly-doped epitaxial layer, a P type highly-doped epitaxial layer and a P type ohmic contact electrode from bottom to top in sequence, the top-to-bottom structural distribution of the PIN junction is the same as the bottom-to-top structural distribution of the lower PIN junction, at least two grooves are formed in each PIN junction, and the alpha irradiation sources are placed in the grooves respectively. The two PIN junctions make contact with each other through the P type ohmic contact electrode, and the upper groove and the lower groove are in mirror symmetry and are communicated with each other. The parallel type PIN type alpha irradiation battery has the advantages that the contact area between the irradiation sources and a semiconductor is large, the nuclear raw material utilization rate and the energy collection rate are high, and the output voltage of the battery is large, and the battery can provide power for a small circuit continuously or can provide power for polar regions, deserts and other areas.

The invention discloses an alpha and beta ray capacitive nuclear battery which belongs to the technical field of nuclear radioactive source application. The nuclear battery collects radiated charged particles respectively through a first metal cladding cladded on an alpha radioactive source and another different second metal cladding cladded on a beta radioactive source, a first metal cladding lead-out anode and a second metal cladding lead-out cathode are respectively connected with a voltage stabilizer access anode and a voltage stabilizer access cathode through conductors, and after voltage is stabilized in a voltage stabilizer, a voltage stabilizer lead-out anode and a voltage stabilizer lead-out cathode are externally connected with a power electronic device to form stable direct current. The nuclear battery disclosed by the invention can be designed into different sizes to meet the requirements of cellphones, laptops, automobiles and other devices on sizes, and has the advantages of long-term sustained power supply and higher power supply voltage.

The magnetic fluid atomic battery uses the α particles emitted by the radioactive elements that release α to hit the nitrogen 14 nucleus, and the nitrogen 14 nucleus releases a proton. The energy of the α particles emitted by the radioactive elements is very low, so it needs to be accelerated by a small cyclotron accelerator to increase the α particles and The collision probability of the nitrogen 14 nucleus, and then use the proton released by the nitrogen 14 nucleus to hit the lithium 7 nucleus, and the lithium 7 nucleus will undergo a nuclear reaction with the incident proton to generate nuclear energy and become two alpha particles with greater energy, which will be accelerated by a linear particle accelerator Particles, the kinetic energy of α particles is converted into electric energy through the magnetic fluid power generation device, and the electrical appliances can be driven to work by connecting the voltage to the circuit with a wire. This is the summary of the manual.

The invention discloses a Schottky type nuclear battery and a preparation method thereof. The compound epitaxial technique of once MOCVD epitaxy and once HVPE epitaxy is adopted to grow and obtain a lining, i.e. a Schottky unit material structure with an n type GaN doping layer-and an insulating GaN doping layer. Then, semiconductor micro-processing is adopted for splashing and generating a corresponding contact electrode so as to form a basic battery unit. An isotope is coupled to the Schottky contact electrode, and then the nuclear battery is obtained after packaging. As the service life of the nuclear battery is determined by the half-life of the isotope, in the invention, the isotope type (pure beta isotope) with simple protection can be flexibly used so as to greatly improve the energy conversion efficiency and the energy density (energy capacity) of the nuclear battery, prolong the service life of the nuclear battery and provide an effective approach for reasonably reusing waste materials.

The invention discloses a micro-electro-mechanical system nuclear battery. The micro-electro-mechanical system nuclear battery comprises a substrate, a cantilever structure, and an emission unit; the cantilever structure is suspended in the air and is fixed on the side wall of the substrate through a fixing end; the cantilever structure comprises an emission portion and a piezoelectric portion; the emission portion is arranged on the free end of the cantilever structure; the piezoelectric portion is arranged on the fixing end of the cantilever structure; the emission unit is arranged on the position corresponding to the emission portion of the cantilever structure on the substrate for emitting electrons to the emission portion, wherein the width of the emission portion is greater than the width of the piezoelectric portion.

The invention discloses a beta radiation Volta effect nuclear battery based on a silicon carbide PN junction. The basic structure of the nuclear battery comprises a pure beta radiation source, a silicon carbide PN junction device and a battery shell. A silicon carbide PN junction structure is prepared by using a microwave plasma chemical vapor deposition technique and an ion implantation technique; an ohmic contact electrode is fabricated by using semiconductor micromachining and electron beam evaporation coating; and then the pure beta source is coupled and loaded to the surface of the silicon carbide PN junction device to construct an apparatus that converts the decay energy of the pure beta source into electrical energy. A technical scheme provided by the invention is simple, and is beneficial for preparing the thin film type beta radiation Volta effect nuclear battery with high energy conversion efficiency, stable output performance, long working time and strong anti-irradiation performance; and the nuclear battery has important application value.

The utility model relates to an atomic power supply system of display unit, belonging to technology field of displaying and power supply. The present display unit has a wide use, such as computers, but dose not have the function of supplying power outside. Along with the development and requirement of decreasing the computer size and the space for battery without wire joint, a mass of portable power supplies are needed. Unfortunately the present display unit has no atomic battery and power-supply interface, therefore can not supply power outside. The utility model provides an atomic battery, a power-supply device and a plurality of interfaces on the display unit in order to resolve the defects that the present display unit has no atomic battery; and other battery can not supply power outside due to short service time. Therefore the utility model can supply power for a plurality of devices, and does not need to charge, and also has the advantage of low cost.

The invention discloses a quantum dot radiofluorescence effect nuclear battery, and relates to the field of nuclear energy application . The battery comprises a sealed shell, a radioactive source, a quantum dot fluorescence layer and a semiconductor photovoltaic assembly, the semiconductor photovoltaic assembly comprises a semiconductor, a front electrode and a back electrode, the radioactive source is arranged in the sealed shell, the radioactive surface of the radioactive source is covered with the quantum dot fluorescence layer, the thickness of the quantum dot fluorescence layer is less than or equal to the range of radioactive particles in the quantum dot fluorescence layer, the quantum dot fluorescence layer is covered with the front electrode of the semiconductor photovoltaic assembly, and a quantum dot fluorescence material in the quantum dot fluorescence layer is an all-inorganic perovskite. The emission wavelength of the fluorescence layer can be regulated through regulatingthe composition and the dimension of quantum dots in order to make the nuclear battery have excellent output performance.

The invention discloses a preparation method of a photoelectric nuclear battery. The method comprises the following steps: first of all, arranging a sealing housing, a radioactive source layer, a semiconductor photovoltaic assembly and a fluorescent layer; secondary, arranging a glass sealing structure outside the radioactive source layer; then, arranging a transparent window body on the sealing housing, and fixedly arranging a radioactive source layer with the glass sealing structure, the fluorescent layer and the semiconductor photovoltaic assembly which are successively connected inside the sealing housing; and finally, fixedly connecting the glass sealing structure with the transparent window body of the sealing housing, and connecting a glass substrate with a front electrode layer of the semiconductor photovoltaic assembly. According to the invention, through combination with the common effects of photoinduced fluorescence of sunshine and radiation induced fluorescence of a radiation source, the output power of the battery is enhanced, the energy density of the battery is greatly improved, the application field of the battery is expanded, and long-time high-efficiency operation of the battery is guaranteed.

The invention discloses a radiant scintillator type nuclear battery, and belongs to the technical field of nuclear energy utilization. The nuclear battery comprises a sealed shell, a radiant scintillator, a non-radiant scintillator, anti-reflection film and a semiconductor photovoltaic module. The radiant scintillator is surrounded by the non-radiant scintillator, and the anti-reflection film completely wraps the scintillators; the semiconductor photovoltaic module completely wraps the anti-reflection film, and the sealed shell is fixed to the outer wall of the semiconductor photovoltaic module. According to the radiant scintillator type nuclear battery, fluorescent materials and a radioactive source are integrated, the fluorescence yield is further increased, the damage caused by the external radioactive source to lattice structures of the scintillators is avoided, the size of the battery is reduced, the energy of the radioactive source is fully utilized, the output power of the battery is increased, and the battery is a novel way of the energy utilization of the radioactive source.

The invention discloses a PIN-type isotope nuclear battery. The PIN-type isotope nuclear battery comprises a radioactive isotope source layer 1, a SiO2 passivation layer 2, a SiO2 dense insulating layer 3, a p-type Ohmic contact electrode 4, a p-type SiC epitaxial layer 5, an n-type SiC epitaxial layer 6, an n-type SiC substrate 7 and an n-type Ohmic contact electrode 8. The PIN-type isotope nuclear battery is characterized in that the doping concentration of the p-type SiC epitaxial layer 5 is in the range from 1*10<19> cm<-3> to 5*10<19> cm<-3>, the doping concentration of the n-type SiC substrate 7 is in the range from 1*10<18> cm<-3> to 7*10<18> cm<-3>, and the n-type SiC epitaxial layer 6 is formed by injecting niobium ions having energy which is in the range from 2000KeV to 2500KeV and having a dosage which is in the range from 5*10<13> cm<-2> to 1*10<15> cm<-2>, wherein the doping concentration of the n-type SiC epitaxial layer 6 is in the range from 1*10<13> cm<-3> to 5*10<14> cm<-3>. According to the invention, the carrier concentration of the intrinsic layer can be reduced and the depletion region width can be increased, so the collection efficiency of generated electron hole pairs can be improved, so that the device open-circuit voltage and energy conversion efficiency can be improved.

The invention discloses a thermoelectric nuclear battery based on a double-layer structure. The thermoelectric nuclear battery comprises a radiation source, a radioactive source box, an outer shell, thermoelectric materials, grooves, a sealing cover and a heat dissipating device. The grooves are formed in the outer side of the radioactive source box and in the outer side of the outer shell, the thermoelectric materials are arranged in the grooves, the radiation source is filled in the radioactive source box, the radioactive source box is arranged in the outer shell in a sleeved mode, the sealing cover is additionally arranged on the top of the battery, and the heat dissipating device is arranged on the outer side of the battery, and accordingly a sealed whole is formed. The radiation source, the radioactive source box, the thermoelectric materials and the grooves form an internal structure. The outer shell, the thermoelectric materials, the grooves, the sealing cover and the heat dissipating device form an external structure. A heat source is fully used by means of gradient temperature differences of external low-temperature environment or natural low-temperature environment, and the temperature differences are between the radioactive source box and the outer shell and caused by the outer shell and the heat dissipating device. The thermoelectric nuclear battery has the advantages of being long in service life, high in heat source utilization rate, safe to use and the like. The utilization rate of decay particles of the radiation source is high, so that the thermoelectric nuclear battery can be used for directly converting radioactive energy into electricity.

The invention provides a thermonuclear cell which is low in cost, safe to operate and high in isotope irradiation conversion efficiency. The thermonuclear cell comprises at least one thermonuclear cell unit. Materials containing beta radiation sources are utilized by the thermonuclear cell unit to serve as an emitting electrode. Silicon wafers, alloy sheets, permanent magnetic pieces and capacitor plates are symmetrically arranged from near to far with the emitting electrode as the center. The silicon wafers with special structures are utilized by the thermonuclear cell, the contact area between the silicon wafers and energetic particles emitted by splitting of radioactive isotopes is increased, and the conversion efficiency is improved. The silicon wafers and the alloy sheets coated by special coating layers are utilized, the thermomagnetic properties of the silicon wafers and the alloy sheets are utilized to improve the utilization efficiency of heat energy, and the pyroelectricity capacity of the silicon wafers is integrated, so that the output electric energy is increased. It is confirmed by the experiments that the thermonuclear cell uses tritium as the radioactive source, the dimension of 160*87*23 mm is utilized, the discharge voltage reaches 3.7V to 4.2V, the mobile phone access current reaches 850 mA to 1000 mA, and the current is attenuated by 50% in twelve years, the thermonuclear cell can be used continuously for at least 6 years during the discharge, and the conversion efficiency of nuclear isotope reaches 25% to 30%.

The invention discloses a sandwiched parallel-connection PIN-type beta irradiation battery and a preparation method thereof. The invention mainly aims at solving problems of low energy conversion rate and low output power of current nuclear batteries. The battery comprises two PIN junctions connected in parallel and a beta radioactive source layer, wherein one PIN junction is positioned above the other. The lower PIN junction comprises, from bottom to top, an N-type ohmic contact electrode, an N-type highly doped 4H-SiC substrate, an N-type lowly doped epitaxial layer, a P-type highly doped epitaxial layer and a P-type ohmic contact electrode. The structural distribution of the upper PIN junction is opposite to that of the lower PIN junction. The beta radioactive source layer is sandwiched between the P-type ohmic contact electrodes of the upper and lower PIN junctions, such that full utilization upon high-energy beta particles can be realized. The irradiation battery provided by the invention has the advantages of large contact area between a radioactive source and a semiconductor, high nuclear raw material utilization rate, high energy collection rate, and large battery output voltage. The irradiation battery can perform long-lasting power supply for a small circuit, and can be used in power supply for occasions which need unmanned long-term powering, such as polar regions and deserts.

The invention relates to a keyboard atomic power supply system, which belongs to keyboard and power technology field. At present, the keyboard is widely used and most computers require keyboards, but these keyboards have no power supply function. Because computer volume becomes smaller and smaller, battery installation space decreases and wireless connection makes progress, a great deal of portable power is in demand. Present keyboards that have no atomic battery usually rely on power from a computer mainframe. As a result, long distance communication is limited. In order to settle the communication limit for no atomic battery, no power supply function and no storage and communication devices, the invention is equipped with atomic batteries and power supply, and the storage and communication devices on the keyboard. The invention increases service time of a take-out computer, and reduces charging time. In addition, the invention is able to supply several facilities power and makes long distance communication available.

The invention discloses a parallel type PIN type beta irradiation battery and a preparing method thereof to mainly solve the problems that a current nuclear battery is low in energy converting ratio and output power. The parallel type PIN type beta irradiation battery comprises an upper PIN junction, a lower PIN junction and beta irradiation sources, wherein the upper PIN junction and the lower PIN junction are connected in parallel. The lower PIN junction comprises an N type ohmic contact electrode, an N type highly-doped 4H-SiC substrate, an N type lightly-doped epitaxial layer, a P type highly-doped epitaxial layer and a P type ohmic contact electrode from bottom to top in sequence, the top-to-bottom structural distribution of the PIN junction is the same as the bottom-to-top structural distribution of the lower PIN junction, a plurality of grooves are formed in each PIN junction, and the beta irradiation sources are placed in the grooves respectively. The two PIN junctions make contact with each other through the P type ohmic contact electrode, and the upper groove and the lower groove are in mirror symmetry and are communicated with each other. The parallel type PIN type beta irradiation battery has the advantages that the contact area between the irradiation sources and a semiconductor is large, the nuclear raw material utilization rate and the energy collection rate are high, and the output voltage of the battery is large, and the battery can provide power for a miniature circuit continuously or can provide power for polar regions, deserts and other areas.

The invention discloses a silicon carbide (SIC) transverse Schottky junction type mini-sized nuclear battery and a manufacturing method thereof. The nuclear battery comprises a substrate and an N type SIC outer epitaxial layer arranged on the upper portion of the substrate. The N type SIC outer epitaxial layer is provided with an N type SIC ohmic contact doped region. An ohmic contact electrode is arranged on the upper portion of N type SIC ohmic contact doped region. The upper portion of the N type SIC outer epitaxial layer is provided with a Schottky contact electrode. A silicon dioxide layer is arranged on the upper portion, except the areas of the ohmic contact electrode and the Schottky contact electrode, of the N type SIC outer epitaxial layer. The manufacturing method of the nuclear battery comprises the steps of providing the substrate; forming the N type SIC outer epitaxial layer on the substrate in an epitaxial growth mode; forming the N type SIC ohmic contact doped region; forming the silicon dioxide layer; forming the ohmic contact electrode; and forming the Schottky contact electrode; The SIC transverse Schottky junction type mini-sized nuclear battery is reasonable in design, favorable to improving energy converting efficiency and packaging density of mini-sized nuclear batteries, favorable to integration, strong in practicality, and high in popularization and utilization value.

The utility model relates to a storage atom power supply system with the volatility, pertaining to the technique field of the storage and the power supply. Currently, in a bid to increase the storage capacity or convenient carry-over, the peripheral storage (flash memory) are adopted in the computer multi-media player (flash memory is available), the handset, the communication equipment, the truck mounted computer (flash memory is available), information home appliances (flash memory is partly used) and the camera, so that the data will not lose after the power is off; however, the peripheral storage has a low storage velocity and a large size. The volatility / matched memory bank has to be provided with the battery which is charged continuously for keeping the data. Therefore, The utility model combines the volatility memory bank with the atomic battery and the wire / wireless communications module, so as to achieve quick data transfer speed, long service time and wireless transmission.

The invention discloses a sandwich parallel-type epitaxial GaN PIN-type alpha irradiation battery and a manufacturing method thereof. The sandwich parallel-type epitaxial GaN PIN-type alpha irradiation battery and the manufacturing method thereof mainly solve the problems that an existing nuclear battery is low in energy transformation ratio and output power. The sandwich parallel-type epitaxial GaN PIN-type alpha irradiation battery comprises an upper PIN junction, a lower PIN junction and an alpha radioactive source layer, wherein the upper PIN junction and the lower PIN junction are connected in parallel. The lower PIN junction sequentially comprises a P-type ohmic contact electrode, a P-type highly-doped GaN epitaxial layer, an N-type highly-doped 4H-SiC substrate, an N-type low-doped SiC epitaxial layer and an N-type ohmic contact electrode from top to bottom, and the bottom-to-top structure of the upper PIN junction is identical to the top-to-bottom structure of the lower PIN junction. The alpha radioactive source layer is clamped between the P-type ohmic contact electrode of the upper PIN junction and the P-type ohmic contact electrode of the lower PIN junction, so that high-energy beta particles are fully utilized. The sandwich parallel-type epitaxial GaN PIN-type alpha irradiation battery and the manufacturing method thereof have the advantages that the contact area of a radioactive source and a semiconductor is large, the nuclear raw material utilization rate and the energy harvesting rate are high, and the output voltage of the battery is large; the battery can supply electricity to a small circuit enduringly or to a polar region, a desert and other occasions.

The invention provides a silicon carbide material-based Schottky micro nuclear battery. The battery comprises a silicon carbide single crystal substrate, a silicon carbide one-dimensional nanowire array, a Schottky contact electrode, an ohmic contact electrode and a radioactive source layer; the silicon carbide one-dimensional nanowire array is located on the front surface of the silicon carbide single-crystal substrate; the silicon carbide one-dimensional nanowire array is provided with an N-type doped region; the Schottky contact electrode includes a barrier metal layer and an N-type doped region; the surface of the barrier metal layer is interdigital; the ohmic contact electrode is located on the back surface of the silicon carbide single-crystal substrate; and the radioactive source layer is located on the barrier metal layer. The micro nuclear battery provided by the invention has the advantages of novel and reasonable structure, high energy conversion efficiency and low production cost, and is suitable for the field of semiconductor micro devices.