Flexible antimony selenide/perovskite laminated solar cell and preparation method thereof

A technology of solar cells and antimony selenide, which is applied in the field of solar cells, can solve the problems of limiting photoelectric conversion efficiency and narrow light absorption range, and achieve the effects of broadening the spectral absorption range, broadening the utilization range, and reducing thermal relaxation loss

Pending Publication Date: 2022-04-22
HUANENG NEW ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the current single-junction perovskite material has a narrow light absorption range and can only absorb photons in a specific range, making it have the Shockley-Queisser efficiency limit, which limits the further improvement of its photoelectric conversion efficiency.

Method used

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  • Flexible antimony selenide/perovskite laminated solar cell and preparation method thereof
  • Flexible antimony selenide/perovskite laminated solar cell and preparation method thereof
  • Flexible antimony selenide/perovskite laminated solar cell and preparation method thereof

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preparation example Construction

[0045] The present invention also provides a method for preparing the above-mentioned flexible antimony selenide / perovskite laminated solar cell, comprising: S1) depositing a back electrode on a substrate to obtain a composite back electrode substrate; S2) depositing a composite back electrode on the substrate; Evaporating an antimony selenide absorbing layer on the substrate of the back electrode to obtain a composite antimony selenide absorbing layer substrate; S3) depositing a buffer layer on the composite antimony selenide absorbing layer substrate to obtain a composite buffer layer substrate; S4) depositing a window layer on the substrate of the composite buffer layer to obtain the substrate of the composite window layer; S5) depositing an intermediate composite layer on the substrate of the composite window layer to obtain the substrate of the composite intermediate composite layer; S6) Prepare a hole transport layer on the substrate of the composite intermediate composit...

Embodiment 1

[0060] 1) Select a stainless steel foil (1) with a thickness of 0.3 mm, grind and polish it, and then use deionized water, absolute ethanol and acetone to ultrasonically clean it for 30 minutes, and then N 2 blow dry;

[0061] 2) Preparation of the metal back electrode (2): Mo was deposited on the stainless steel foil (1) by magnetron sputtering as Sb 2 Se 3 The back electrode of the battery, the parameters are as follows: sputtering power 120W, sputtering pressure 0.4~1.2Pa, sputtering time 15~30min, equipment vacuum degree 2.0×10 -4 Pa, target base distance 50mm, substrate temperature 50-250°C, Ar flow rate 20-80sccm, the prepared back electrode thickness is 600-1000nm (see Table 1 for details);

[0062] 3) Sb 2 Se 3 Preparation of the absorbing layer (3): when the degree of vacuum is less than 1*10 -4 Under Pa, a layer of Sb with a thickness of 300nm was evaporated at 500°C by vacuum evaporation at an evaporation rate of 0.8 angstroms per second. 2 Se 3 layer

[006...

Embodiment 2

[0074] 1) Select a stainless steel foil (1) with a thickness of 0.3 mm, grind and polish it, and then use deionized water, absolute ethanol and acetone to ultrasonically clean it for 30 minutes, and then N 2 blow dry;

[0075] 2) Preparation of the metal back electrode (2): Mo was deposited on the stainless steel foil (1) by magnetron sputtering as Sb 2 Se 3 The back electrode of the battery, the parameters are as follows: sputtering power 120W, sputtering pressure 1Pa, sputtering time 15min, equipment vacuum degree 2.0×10 - 4 Pa, target base distance 50mm, substrate temperature 150°C, Ar flow rate 40sccm, the prepared back electrode thickness is 910nm;

[0076] 3) Sb 2 Se 3 Preparation of the absorbing layer (3): when the degree of vacuum is less than 1*10 -4 Under Pa, a layer of Sb with a thickness of 300nm was evaporated at 500°C by vacuum evaporation at an evaporation rate of 0.8 angstroms per second. 2 Se 3 layer.

[0077] 4) The preparation of buffer layer (4): ...

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Abstract

The invention provides a flexible antimony selenide/perovskite laminated solar cell. The flexible antimony selenide/perovskite laminated solar cell comprises a substrate, a back electrode, an antimony selenide absorption layer, a buffer layer, a window layer, an intermediate composite layer, a hole transport layer, a perovskite absorption layer, an electron transport layer and a conductive electrode which are arranged in sequence, and the material of the middle composite layer is selected from one or more of molybdenum oxide, indium tin oxide, zinc oxide, aluminum-doped zinc oxide, tin oxide and C60. Compared with the prior art, the multi-junction solar cell is formed by a plurality of light absorbents with different band gaps, so that the utilization range of a solar spectrum can be widened, the thermal relaxation loss of photon-generated carriers can be reduced, and the photoelectric conversion efficiency of the solar cell is further improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, in particular to a flexible antimony selenide / perovskite laminated solar cell and a preparation method thereof. Background technique [0002] Solar cells can convert solar energy into electrical energy through photoelectric conversion, which can be directly used by people and has attracted much attention. According to the development of solar cells and the light-absorbing layer materials used, solar cells can be divided into three categories. The first type is silicon-based solar cells, including monocrystalline silicon, polycrystalline silicon solar cells, amorphous silicon thin-film solar cells, and silicon stacked solar cells; the second type is compound solar cells, including copper indium gallium selenide (CIGS), tellurium Cadmium (CdTe), gallium arsenide (GaAs) and perovskite solar cells; the third category is new solar cells, including dye-sensitized solar cells, organic solar cells a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/30H01L27/28H01L51/42H01L31/18
CPCH01L31/18H10K30/57H10K19/20H10K30/10Y02E10/549
Inventor 李梦洁赵志国赵东明秦校军丁坤刘家梁熊继光
Owner HUANENG NEW ENERGY CO LTD
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