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Flexible composite substrate for perovskite thin-film solar cell and preparation method thereof

A technology for solar cells and composite substrates, applied in the field of solar cells, can solve the problems of inability to block water and oxygen, poor environmental adaptability, poor temperature resistance, etc. Effect

Pending Publication Date: 2020-03-27
CHINA LUCKY FILM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems in the above-mentioned prior art, and to provide a flexible composite substrate for perovskite thin-film solar cells, which has various characteristics such as ultraviolet cutoff, weather resistance, barrier, and transparent conductive film. Function, it overcomes the technical problems of the existing plastic substrates such as poor temperature resistance, poor environmental adaptability, and inability to block water and oxygen. field needs

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  • Flexible composite substrate for perovskite thin-film solar cell and preparation method thereof
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  • Flexible composite substrate for perovskite thin-film solar cell and preparation method thereof

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preparation example Construction

[0033] The present invention also provides a method for preparing a flexible perovskite thin-film solar cell, comprising the following steps:

[0034] (1) Use UV-O on the outer surface of the flexible substrate 3 , O 2 -Plasma or plasma treatment, after treatment, wet coating process is used to deposit inorganic nano-coating. Wet coating processes include, but are not limited to, microgravure coating, slot coating, roll coating, spray coating, blade coating, or screen printing.

[0035] (2) Treat the inner surface of the base material, and the treatment method is the same as step (1). An organic barrier layer is deposited on the inner surface, and an inorganic barrier layer is deposited on the surface of the organic barrier layer. After one or more paired layers are deposited, the preparation of the water-oxygen barrier layer is completed. The flexible substrate can be a substrate or a substrate / planarization layer, and the planarization layer can reduce the surface roughne...

Embodiment 1

[0040] The first step is to prepare the water-oxygen barrier layer:

[0041] With 50μm ETFE film as the substrate, O 2 -plasma treatment of the outer surface of the substrate, micro gravure coating 20wt% SiO 2 Hydrosol, obtain 50nm SiO 2 Inorganic nanocoating. The inner surface of the substrate is then treated with plasma, coated with a planarization layer, and then SiN is deposited using PECVD equipment x Inorganic barrier layer with a thickness of 150nm; followed by vacuum coating of organic silicon-modified polyacrylate organic barrier layer with a thickness of 10μm; again using PECVD equipment to deposit SiN with a thickness of 150nm x The inorganic barrier layer completes the preparation of the water and oxygen barrier layer. WVTR is 1×10 -5 g / m 2 / day.

[0042] The second step is to prepare transparent electrodes:

[0043] On the surface of the water-oxygen barrier layer prepared in the first step, a 180nm thick ITO transparent conductive film was prepared by mag...

Embodiment 2

[0058] The first step is to prepare the water-oxygen barrier layer:

[0059] With 125μm UV cut-off transparent PVDF film as the base material, the outer surface is treated by corona, and 25wt% Al is slot-coated 2 o 3 Hydrosol, to obtain 100nm Al 2 o 3 Inorganic nanocoating. The inner surface of the substrate is treated with plasma, coated with a planarization layer, and then SiO is deposited using PECVD equipment x C y Inorganic barrier layer with a thickness of 200nm; then coated with a silicone-modified polyacrylate organic barrier layer with a thickness of 2μm; again using PECVD equipment to deposit 200nm thick SiO x C y The inorganic barrier layer completes the preparation of the water and oxygen barrier layer. WVTR is 1×10 -4 g / m 2 / day.

[0060] The second step is to prepare transparent electrodes:

[0061] On the surface of the water-oxygen barrier layer prepared in the first step, a 100nm silver nanowire AgNWs transparent conductive film was prepared by wet ...

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Abstract

The invention provides a flexible composite substrate for a perovskite thin-film solar cell and a preparation method thereof. The flexible composite substrate has the characteristics and functions ofultra-thinness, weather resistance, water and oxygen barrier, transparent conductive films and the like, and solves the problem that existing PET, PEN and other base materials are poor in weather resistance. Besides, the water-oxygen blocking layer can prevent water vapor and oxygen in the environment from corroding the perovskite cell, and the requirement for long-term use of the cell in the outdoor humid and hot environment is met. The flexible composite substrate for a perovskite thin-film solar cell and a preparation method thereof can break through the preparation technology of the ultrathin high-barrier layer, integrate the barrier layer, the ultrathin base material and the transparent electrode into one body, reduce the use of a layer of packaging film, reduce the surface density ofthe battery, simplify the traditional sandwich type battery packaging process, only need a one-side pressing process, can reduce the side leakage risk of the device, and can improve the long-term stability of the device.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to the preparation of a substrate for a perovskite thin-film solar cell. Background technique [0002] The photoelectric conversion efficiency of perovskite solar cells has jumped from 3.8% in 2009 to 23.7%, which is comparable to the efficiency of commercial solar cells. Inexpensive raw materials and simple preparation process have made perovskite batteries receive unprecedented attention in the past five years. Replacing the rigid glass substrate with a flexible substrate enables the battery to have the advantages of high efficiency, light weight, bendability, impact resistance, and portability, and can be used in many fields of military and civilian use. With the rapid development of the field of near-space detection, airships, unmanned aerial vehicles and other aircraft have been widely used. There is an urgent need for flexible solar cells that are light, curved, and high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/56B82Y30/00
CPCB82Y30/00H10K77/111H10K50/805H10K50/841H10K50/844H10K71/00Y02E10/549
Inventor 王亚丽王佳侯丽新刘贤豪
Owner CHINA LUCKY FILM CORP
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