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Perovskite solar cell

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as reducing photoelectric conversion efficiency and reducing short-circuit current of solar cells, achieving high photoelectric conversion efficiency, large short-circuit current, and simple process Effect

Inactive Publication Date: 2019-02-15
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

This is a material that can be prepared by a solution method and has been commercialized. However, it has been found that in the above tin-containing perovskite cells, the crystal grains of the perovskite material on PEDOT:PSS are very small, which means that Cause more grain boundaries to appear, thereby inhibiting the mobility of electrons and holes, and the inhibition of mobility will reduce the short-circuit current of solar cells and ultimately reduce the photoelectric conversion efficiency

Method used

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Embodiment Construction

[0021] The present invention will be further explained below in combination with specific embodiments.

[0022] 1) Clean the ITO glass substrate: ultrasonically clean the substrate in glass detergent, deionized water, acetone, and isopropanol for 10 minutes, then dry it with nitrogen, and treat it in an ultraviolet ozone cleaner for 15 minutes;

[0023] 2) Preparation of nickel oxide layer: spin-coat nickel oxide solution on the cleaned ITO glass substrate with a coater at a speed of 4000rpm for 240°C, then heat anneal in a nitrogen atmosphere for 15min at an annealing temperature of 150°C, and then Put it in the air for thermal annealing for 60min, the annealing temperature is 300℃;

[0024] 3) Preparation of the active layer: transfer the substrate to a nitrogen glove box, spin-coat tin-containing perovskite solution with a homogenizer at a speed of 2000rpm for 60s, then immediately drip chlorobenzene solution for extraction, and chlorobenzene solution The spin coating spee...

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Abstract

The invention discloses a perovskite solar cell. The structure of the perovskite solar cell comprises glass, a positive electrode ITO, a positive electrode modification layer nickel oxide, an active layer FAPb<0.75>Sn<0.25>I<3>, a first negative electrode modification layer PC60BM, a second negative electrode modification layer BCP and negative electrode silver from bottom to top. The grain of perovskite on the nickel oxide is larger than that of traditional PEDOT:PSS, the charge mobility is higher, higher short-circuit current and external quantum efficiency can be generated, and larger photoelectric conversion efficiency is further obtained.

Description

technical field [0001] The invention relates to a structure and a preparation method of a solar cell, in particular to a structure and a preparation method of a perovskite solar cell. Background technique [0002] The energy problem has become one of the most serious global problems plaguing mankind. The annual energy consumption of human beings is still increasing, while the reserves of fossil fuels are declining. It is foreseeable that after hundreds or even decades, the fossil fuels that have brought great prosperity to industrial society will eventually be exhausted. Therefore, it is necessary to find fossil fuels. Alternatives are imminent. As a form of renewable energy, solar energy is inexhaustible and inexhaustible, and it is a very potential new energy source. At present, solar cells are the most widely used form of utilizing solar energy. For a long time, thanks to high conversion efficiency and excellent stability, silicon solar cells have been the most importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/80H10K30/10H10K30/80Y02E10/549
Inventor 池丹黄仕华张美影王佳芮哲黄玉清
Owner ZHEJIANG NORMAL UNIVERSITY
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