Solar cell based on ternary inorganic flat-plate-shaped heterojunction film, and preparation method for solar cell
A solar cell and flat-plate technology, applied in the field of solar cells, can solve problems such as complex technology and equipment, high energy consumption, and large material loss, and achieve the effects of avoiding short-circuit phenomenon, simple preparation method, and low equipment requirements
Active Publication Date: 2018-04-06
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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Problems solved by technology
Although inorganic materials with good quality and high crystallinity and high-efficiency solar cell devices can be obtained, these vapor deposition preparation methods often have complex techniques and equipment, high energy consumption (requires high vacuum, high temperature of 400-1400°C), and material loss. Large and other deficiencies, and the supply of high-purity raw materials is also limited; the existence of these deficiencies results in high battery costs, which is not conducive to large-scale applications
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[0037] 1. TiO 2 Film preparation.
[0038] (1-1) Etching and cleaning of ITO conductive glass:
[0039] The ITO conductive glass (size 3×3cm 2 , 15Ω / □) use a mixture of concentrated HCl-water and Zn powder with a volume ratio of 1:1 to etch the ITO film on the ITO conductive glass into four strips of 16×4mm 2 thin strips to obtain etched ITO conductive glass substrates; and then ultrasonically cleaned with acetone, isopropanol, and ultrapure water for 5 minutes to obtain clean etched ITO conductive glass substrates, which were dried and used for later use.
[0040] (1-2)TiO 2 Film preparation:
[0041] Mix absolute ethanol, n-butyl titanate, and glacial acetic acid at a volume ratio of 4:1:0.1 to form a uniform and colorless TiO 2 Sol precursor. 150 μL of TiO 2 The sol precursor droplet is spin-coated (2000 rpm, 30 seconds) on the etched ITO conductive glass, and spin-coated twice continuously to obtain TiO 2 Sol film; the TiO 2 After the sol film was stored at room t...
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Abstract
The invention provides a solar cell based on a ternary inorganic flat-plate-shaped heterojunction film. An anode, the ternary inorganic flat-plate-shaped heterojunction film, an organic hole transmission layer and a cathode are sequentially deposited on a glass substrate. The ternary inorganic flat-plate-shaped heterojunction film consists of a TiO<2> nano-film, a CdS nano-film and a CuInS<2> nano-film. The TiO<2> nano-film, the CdS nano-film and the CuInS<2> nano-film are sequentially deposited on the anode of the solar cell. The technical progress and innovation points of the invention mainly lie in the following aspects: (2), core materials: a preparation method for the key CuInS<2> film is completely different from the prior art, and the preparation method provided by the invention iseasier for the large-area preparation; (2), cell structure and performance: the organic hole transmission layer is employed in the cell, thereby effectively avoiding the short-circuit phenomenon caused in the deposition process of Au atoms, and enabling the V<oc> of the cell to be higher.
Description
technical field [0001] The invention relates to the field of solar cells, in particular to a solar cell based on a ternary inorganic flat heterojunction thin film. Background technique [0002] Converting solar energy into electrical energy and realizing photovoltaic power generation is an important way to utilize renewable energy. The most critical part of the photovoltaic power generation system is the device that captures and converts solar energy, that is, the solar cell. Solar cells in practical applications need to meet two basic requirements: high efficiency (>10%) and stable cell performance (lifetime >20 years). The photoactive layer of a solar cell is the area where light is absorbed and free charges are generated. It is usually composed of a heterogeneous film structure composed of n-type semiconductors and p-type semiconductors. It plays a decisive role in the photoelectric conversion process of the cell and is the key to the solar cell. material part. I...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01L51/46H01L51/42H01L51/48B82Y30/00
CPCB82Y30/00H10K71/00H10K30/35H10K2102/00Y02E10/549
Inventor 陈王伟王命泰齐娟娟董超
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI