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Photovoltaic device and solar battery

A photovoltaic device and light-incident surface technology, applied in the field of solar cells, can solve problems such as the influence of light absorption without relevant research reports, so as to improve the photovoltaic conversion ability, enhance the light trapping effect, and improve the collection effect

Active Publication Date: 2012-08-22
PEKING UNIV SHENZHEN GRADUATE SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, through the composite interface engineering of controllable low-dimensional materials and batteries, the system breaks through the above-mentioned light trapping effect, photoelectric effect and photovoltaic effect in solar cells and their impact on light absorption. There are no relevant research reports.

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  • Photovoltaic device and solar battery
  • Photovoltaic device and solar battery
  • Photovoltaic device and solar battery

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preparation example Construction

[0053] In the embodiment of the present application, the preparation method of the transparent electrode region includes: at least one of vapor phase transport (HVPE), Sputter, CVD, evaporation method, and electrochemical method; the preparation method of the window region includes: Sputter, evaporation method, CVD, chemical bath deposition (CBD), near vacuum sublimation (CSS), at least one of electrochemical methods; the preparation method of the absorption region includes: at least one of CSS, electrochemical deposition, Sputter, HVPE, CVD kind.

[0054] The basal plane mentioned in this application refers to the plane to which the nanowires or nano-microspheres are combined to form a low-dimensional composite interface structure.

[0055] The solar cell prepared by using the photovoltaic device provided by this application has a low-dimensional composite interface structure in the photovoltaic device, and the special structure design of the low-dimensional composite interfa...

Embodiment

[0057] The preparation of embodiment one nanosphere

[0058] The nano-microspheres used in this application can be prepared by oneself or directly purchased from commercialized nano-microspheres.

[0059] The preparation method of nanosphere comprises: at first synthesizing the polymer seed of monodispersity, these monodisperse polymer seeds can be obtained by dispersion polymerization and soap-free emulsion polymerization, and dispersion polymerization is monomer (as styrene), initiator (AIBN) and stabilizer (PVA) are dissolved in ethanol and water. Then adopt heating polymerization method to prepare nano-microspheres (such as polystyrene microspheres) with uniform particle size by controlling stirring rate, temperature and time.

[0060] For directly purchased nano-microspheres, such as polystyrene nano-microspheres (product 53532-1G-F of Sigma-Aldrich Company), silica microspheres (product TOND-180 of Longkou Ruilong High-Tech Co., Ltd.), the The purchased nano-microspher...

Embodiment 2

[0064] The preparation of embodiment two nanowires

[0065] The realization of the point contact between the nanowires and the basal surface is to directly generate the nanowires on the basal surface, and the spacing of the nanowires is first made into a microstructure template with a specific spacing on the basal surface through the semiconductor microstructure processing method, so that the generated nanowires Only some specific positions can be occupied, so as to control the deposition positions of the nanowires, and controllably prepare the nanowires with the desired pitch arrangement.

[0066] The preparation method of metal nanowires takes copper, silver, nickel and other metal nanowires as examples. The template is a porous alumina film provided by Shanghai Haohang Chemical Co., Ltd. (CAS number: Ultrathin Free-standing Porous Anodic Alumina). The template is used as the working electrode, and the metal sheet (copper, silver, nickel) is used as the counter electrode. M...

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Abstract

The invention discloses a photovoltaic device and a solar battery comprising the photovoltaic device. The photovoltaic device comprises three regions including a transparent electrode region, a window region and an absorbing region, wherein at least one face of six faces of in-light faces and back faces of the three regions is provided with a low-dimensional composite interface structure formed by contacting nano wires or nano micro-ball points. The solar battery prepared by the photovoltaic device disclosed by the invention utilizes a bionic low-dimensional composite interface structure to collect sunlight and takes the nano wires or the nano micro-balls as surface plasmons, so as to further enhance light trapping effects. Meanwhile, controllable doping can be formed through controllable point contact and a potential field which can reduce a hole and electron compounding possibility and is good for transmitting holes or electrons is provided, so that the separating efficiency and the transportation capability of electron holes are improved and the efficient photovoltaic effect is realized; and through regulating and controlling a doping interface, energy band engineering is adjusted, the photovoltaic current and / or voltage is improved and the photovoltaic conversion capability is improved.

Description

technical field [0001] The invention relates to the field of photoelectric conversion materials, in particular to a photovoltaic device and a solar cell containing the photovoltaic device. Background technique [0002] As mankind enters the 21st century, environmental pollution and energy shortages have increasingly restricted the sustainable development of society. Renewable energy technologies such as solar energy represent the development direction of clean energy. As the most ideal feature of sustainable development, solar photovoltaic power generation will enter the human energy structure and become an important part of basic energy. Our country has also included it in the national medium and long-term scientific and technological development plan as an important basic condition for building a new society with harmonious and sustainable development. In a broad sense, the energy on the earth comes from the sun in the final analysis. Except for nuclear energy and geothe...

Claims

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Application Information

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IPC IPC(8): H01L31/06H01L31/0216H01L31/0224H01G9/20
CPCY02E10/50
Inventor 潘锋梁军周航
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
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