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A flexible solar cell

A solar cell and flexible technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of poor photoelectric conversion efficiency and low qualification rate of flexible solar cells, so as to improve the yield rate, reduce the loss of photoelectric conversion efficiency, and save manufacturing Effects of Cost and Manufacturing Time

Active Publication Date: 2018-11-30
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a flexible solar cell, the purpose of which is to optimize the structure of the prior art solar cell, thereby solving the problem of the low yield of large-area flexible solar cells prepared by the prior art, and the photoelectric Technical problems with poor conversion efficiency

Method used

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  • A flexible solar cell
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preparation example Construction

[0045] The method for preparing the above-mentioned flexible solar cell is prepared sequentially in the order of a reflective metal layer, a multi-layer photoactive layer, a transparent conductive layer and a metal grid, when the flexible solar cell includes a hole blocking layer and / or an electron blocking layer , then add preparation steps between the corresponding steps;

[0046] Among them, the preparation method of photoactive layer, intermediate layer, electron blocking layer, hole blocking layer and transparent conductive layer can be prepared by coating method, while reflective metal layer and metal grid can be prepared by magnetron sputtering, vacuum thermal evaporation or nanometer Particle spray preparation.

Embodiment 1

[0066] The area of ​​the solar cell of embodiment 1 is 10cm 2 , including: polyethersulfone film as a flexible substrate, 80nm to 100nm silver as a reflective metal layer, 5nm PEI (polyetherimide) as a hole blocking layer, and 180nm first active layer (including P3HT and ICBA with a mass ratio of 1:1, the middle layer (composed of 1mm PEDOT:PSS and 5nm PEI in sequence from the bottom to the top surface), 80nm second active layer (PTB7-Th:PC 71 BM), 120nm PEDOT:PSS as transparent conductive layer and 80nm silver metal grid, such as figure 1 Shown; The preparation method of this solar cell comprises the following steps:

[0067]S1. Cut out a polyethersulfone film with a side length of 5 cm, cover it with tape, and vacuum evaporate to obtain a silver electrode with a side length of 4 cm in the central area, with a thickness of 80 nm to 100 nm. One side of the silver electrode is additionally vapor-deposited to the edge of the flexible substrate for easy contact testing. Spin-c...

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Abstract

The invention discloses a flexible solar cell. The flexible solar cell includes in order from bottom surface to top surface: a flexible substrate, a reflective metal layer, a multi-layer photoactive layer, a transparent conductive layer and a metal grid; the reflective metal layer is used to reflect incident light to improve The light energy absorption rate of the flexible solar cell also serves as the cathode of the flexible solar cell; the multi-layer photoactive layer is used to convert light energy into carriers and further into electrical energy; the transparent conductive layer Used as an anode of the flexible solar cell; the metal grid is used to collect charges of the transparent conductive layer to enhance the conductive performance of the transparent conductive layer. The invention optimizes the structure of flexible solar cells in the prior art and solves the technical problems of low qualification rate and poor photoelectric conversion efficiency in preparing large-area flexible solar cells.

Description

Technical field [0001] The invention belongs to the field of large-area flexible photovoltaic device preparation, and more specifically, relates to a flexible solar cell. Background technology [0002] Solar energy resources are the clean resources that mankind can most rely on in the future. They are inexhaustible and inexhaustible. In the context of resource shortage, the development and research of solar energy is particularly urgent. [0003] Organic solar cells can be made using a solution method, in which organic semiconductor materials are made into thin-film batteries on flexible substrates through simple spin coating, spray coating, scraping and other means. Through the research progress of Alan J. Heeger, Frederik C. Krebs, Cao Yong, Yang Yang and others in the past two decades on material synthesis, device physics and other aspects, the photoelectric conversion efficiency of organic solar cells prepared in the laboratory has exceeded 10%. However, these organic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/00H10K99/00
CPCH10K77/111H10K30/211H10K30/83H10K30/87Y02E10/549
Inventor 周印华毛霖童金辉覃飞蒋方圆熊思醒孟伟蒋友宇
Owner HUAZHONG UNIV OF SCI & TECH
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