Carbon electrode material of perovskite thin film solar cell and preparation method of carbon electrode material

Abstract

The invention discloses a carbon electrode material of a perovskite thin film solar cell. According to the carbon electrode material, a carbon source and a template agent are used as raw materials, and the carbon electrode material is prepared through a solvothermal reaction under the temperature of 100-200 DEG C and a pyrolytic carbonization reaction under the temperature of 500-650 DEG C. The invention furthermore discloses a preparation method of the carbon electrode material. The method comprises the steps that the carbon source is added into a glycol-water solution, the template agent isadded for uniform mixing, and then the mixture is subject to a reaction under the temperature of 100-200 DEG C for 1-2h to obtain a reactant; and then under a protective gas atmosphere, the reactant is calcined under the temperature of 500-650 DEG C for 2-3h, and the carbon electrode material is obtained. The carbon electrode material replaces expensive noble metal to serve as a hole transportingelectrode material, so that cost is lowered; and the prepared carbon electrode material has a hollow spherical structure and has stable performance when applied to the solar cell, and photoelectric conversion efficiency is improved. Meanwhile, the carbon electrode material is prepared by synthesizing two reactions, namely the solvothermal reaction and the pyrolytic carbonization reaction, so thatoperation is easy and convenient.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a carbon electrode material for a perovskite thin-film solar cell and a preparation method thereof. Background technique [0002] With the continuous consumption of coal, oil, and natural gas, the three traditional fossil energy sources, the energy crisis has become a common problem faced by all mankind. At the same time, the environmental pollution caused by the burning of fossil fuels has gradually deepened. People urgently need to find a clean and non-toxic polluting alternative energy sources. Among them, solar energy is inexhaustible and has always been considered as one of the most ideal energy sources. At present, about 85% of the market share of solar cells is occupied by crystalline silicon solar cells, but the high price of crystalline silicon seriously restricts its development. Perovskite solar cell is an emerging photovoltaic industry developed in r...

AI Technical Summary

Problems solved by technology

[0003] In the preparation process of perovskite solar cells, it is usually necessary to use noble metal gold or silver as the counter electrode of the battery, which makes the preparation cost of solar cells higher and is not conducive to large-scale production. Now carbon materials have been added to perovskite It is used as an electrode in solar cells, but the existing carbon material preparation process is complicated, and the stability of the solar cells is not very good, and the photoelectric conversion efficiency is not very ideal

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