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Preparation method of light absorption enhanced perovskite solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problems of expensive materials and high energy consumption of the support layer preparation process

Pending Publication Date: 2020-03-31
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process of the traditional support layer has high energy consumption and expensive materials

Method used

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  • Preparation method of light absorption enhanced perovskite solar cell
  • Preparation method of light absorption enhanced perovskite solar cell
  • Preparation method of light absorption enhanced perovskite solar cell

Examples

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preparation example Construction

[0030] The invention provides a kind of preparation method of perovskite solar cell, comprising the following steps:

[0031] (1) The conductive substrate is ultrasonically cleaned with detergent, acetone, isopropanol, ethanol and deionized water in sequence, and then dried with nitrogen to obtain a pretreated substrate;

[0032] (2) spin coating the zinc oxide precursor solution on the surface of the pretreated substrate to form a zinc oxide electron transport layer;

[0033] (3) self-assembling and depositing silicon dioxide nanospheres on the surface of the zinc oxide electron transport layer to form a silicon dioxide photonic crystal support layer;

[0034] (4) Deposit PbI on the silicon dioxide photonic crystal support layer 2 The film was post-soaked in an isopropanol solution containing ammonium chloride and methylammonium iodide, and then annealed to form CH 3 NH 3 PB 3 Perovskite light-absorbing layer;

[0035] (5) In the CH 3 NH 3 PB 3 The hole transport laye...

Embodiment 1

[0082] The preparation method was the same as that of the comparative example, the only difference being that the silicon dioxide photonic crystal support layer was prepared by using the particle dispersion liquid with a diameter of 240 nanometers. Silica photonic crystals were deposited on the ZnO electron transport layer, and 100 μL of the dispersion liquid was spin-coated at a speed of 3000 rpm / min for 30 s; then annealed on a heating plate at 80° C. for 10 min. A silicon dioxide photonic crystal support layer is obtained. Then a perovskite solar cell was prepared on the silicon dioxide support layer by the same preparation method as the comparative example.

[0083] Carry out J-V test to the perovskite solar cell prepared in embodiment 1, the photoelectric conversion efficiency of device is 17%, and current density is 21.5mA / cm 2 , the open circuit voltage is 1.08V, and the fill factor is 73.82%.

[0084] For the CH prepared in comparative example and embodiment 1 3 NH ...

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Abstract

The invention provides a preparation method of a perovskite solar cell, and belongs to the field of solar cells. Self-assembled silicon dioxide nanospheres are introduced as a low-temperature supporting layer and also have the effect of photonic crystals. as a novel supporting layer with double functions so that dual functions of reflecting light in the cell can be realized while a perovskite growth framework is constructed. Therefore, the light absorption of the perovskite layer is increased, a guiding and dredging effect on photon-generated carriers is achieved, and the quantum acquisition efficiency is improved. Data of the embodiment show that the efficiency of the perovskite solar cell provided by the invention is improved to 17%. According to the preparation method, the particle sizeof the used silicon dioxide nanospheres is preferably (80-340 nanometers) and more preferably (240-340 nanometers), and the preparation method has the advantages of easiness in preparation, simple process and cheap raw materials, so that the preparation method is very suitable for large-scale production.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite solar cell in which a self-assembled bifunctional photonic crystal is used as a support layer to enhance light absorption and a preparation method thereof. Background technique [0002] In today's world, due to the depletion of fossil energy and the increasingly serious problem of environmental pollution, people are eager to develop and utilize new renewable clean energy. Among all kinds of new energy, solar energy is undoubtedly the most clean, environmentally friendly and cheap renewable energy. One of the ideal energy sources. There are many ways to utilize solar energy, among which photoelectric conversion has received the most widespread attention. At present, silicon solar cells occupy about 85% of the market share of solar cells, but due to its high price, its application prospects are seriously restricted. In recent years, as a new type of solar cell, p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/44
CPCH10K71/12H10K30/152H10K30/87Y02E10/549Y02P70/50
Inventor 李金华李骏杨曼王贤保
Owner HUBEI UNIV
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