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Radio-voltaic nuclear battery based on perovskite crystals

A perovskite and nuclear battery technology, applied in the field of nuclear batteries, can solve problems such as low conversion efficiency, and achieve the effects of large open circuit voltage, large junction thickness, high energy conversion efficiency and output power

Active Publication Date: 2020-06-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned indirect transduction process, high-energy gamma photons need to be converted into visible photons first, and then converted into electron / hole pairs, so the overall transduction efficiency is relatively low

Method used

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  • Radio-voltaic nuclear battery based on perovskite crystals
  • Radio-voltaic nuclear battery based on perovskite crystals
  • Radio-voltaic nuclear battery based on perovskite crystals

Examples

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Embodiment 1

[0025] Embodiment 1: see Figure 1-Figure 4, a radiovoltaic nuclear battery based on perovskite crystals, the structure of the nuclear battery is as follows from top to bottom: radiation source, anode electrode 5, p-type perovskite layer 4, intrinsic perovskite layer 3, n Type perovskite layer 2 and cathode 1. The high-energy particle rays 6 generated by the radiation source are incident on the battery conversion unit from top to bottom. 5 is an anode electrode, and its work function is close to the top of the valence band of the P-type perovskite layer, so as to facilitate the transmission of photogenerated holes. 4 is a P-type perovskite layer, which is mainly used to form a depletion layer to generate photovoltage, and the thickness of the P-type layer is between 0.1mm and 1mm. 3 is the intrinsic perovskite layer, which is mainly used for the absorption and photoelectric conversion of high-energy particles, so its thickness is relatively large. Especially for high-energy...

Embodiment 2

[0026] Example 2: see Figure 1-Figure 4 , a radiation voltaic nuclear battery based on perovskite crystals, the method of epitaxially growing perovskite PIN junction is as follows: step 1) first grow N-type perovskite substrate by variable temperature method, such as Figure 4 (a) shown. Step 2) epitaxially grow thicker intrinsic perovskite crystals on N-type perovskite substrates, such as Figure 4 (b) shown. Step 3) Epitaxial growth of P-type perovskite crystals on intrinsic perovskite crystals, such as Figure 4 As shown in (c), and set a horizontal cutting line and two vertical cutting lines; step 4) split the crystal along the horizontal cutting line and the vertical cutting line to obtain the perovskite PIN junction, as Figure 4 (d) shown. A cathode electrode is deposited on the N-type perovskite layer, and an anode electrode is deposited on the P-type perovskite layer. The perovskite PIN structure was epitaxially grown by solution method. By adjusting the growth...

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Abstract

The invention relates to a radio-voltaic nuclear battery based on perovskite crystals and a preparation method thereof. A nuclear battery structure sequentially comprises a radiation source, an anodeelectrode, a p-type perovskite layer, an intrinsic perovskite layer, an n-type perovskite layer and a cathode from top to bottom. In the nuclear battery structure, the radiation source emits high-energy particles such as beta particles, X rays and gamma rays, the high-energy particles are absorbed in the high-thickness intrinsic perovskite layer, and photo-induced electron / hole pairs are generatedthrough a photoelectric effect. The p-type perovskite layer, the intrinsic perovskite layer and the n-type perovskite layer form a PIN structure, and the PIN structure forms a depletion layer. Due toa built-in electric field of the depletion layer, photo-induced electrons / hole pairs generated by the high-energy particles are separated and drift towards the cathode and the anode respectively to form open-circuit voltage or short-circuit current.

Description

technical field [0001] The invention relates to a nuclear battery, in particular to a perovskite crystal-based radiovoltaic nuclear battery, which belongs to the technical field of nuclear battery equipment. Background technique [0002] Nuclear batteries are devices that convert the energy released by radioactive isotopes as they decay into electricity. Compared with traditional dry batteries, chemical batteries, fuel cells, and solar cells, nuclear batteries have the advantages of long service life, strong environmental adaptability, good working stability, no maintenance, and miniaturization. It has important practical value and has been successfully applied in military satellites, space probes, underwater monitors, cardiac pacemakers, etc. [0003] The two most important parts of a nuclear battery are the radiation unit and the energy conversion unit. When selecting a radiation unit, the radiation type, radiation dose ratio and half-life are mainly considered. Gamma r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21H1/06
CPCG21H1/06Y02E10/549
Inventor 雷威张晓兵李青王昕潘禹竹朱卓娅赵志伟
Owner SOUTHEAST UNIV
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