Preparation method, product and application of tungsten oxide electron transfer layer

Abstract

The invention relates to a preparation method, a product and an application of a tungsten oxide electron transfer layer. The tungsten oxide electron transfer layer is prepared by WO<x> at a low temperature, and batch synthesis of the tungsten oxide electron transfer layer can be realized on a conductive glass substrate; the preparation method comprises the steps of weighing 5ml of alcohol solution, weighing a certain amount of tungsten hexachloride to be dissolved into a solvent alcohol, and performing stirring until the solution is fully dissolved to obtain a yellow solution; performing continuous stirring until the yellow solution is changed into a transparent shallow blue solution; performing spin coating on cleaned FTO conductive glass for 30s; performing heating on the spin-coated substrate in a drying oven at a temperature of 150 DEG C; and repeatedly executing the steps for 2-4 times to obtain the tungsten oxide electron transfer layer with high performance. The electron transfer layer prepared at the temperature of 150 DEG C obtains efficiency of 8.3%. The electron transfer layer prepared by the method does not need the complex processes of high-temperature sintering and the like, and simple and convenient preparation method and technological process, large parameter adjustable range, high repeatability and low energy consumption are achieved, so that the battery manufacturing cost is lowered effectively, and large-scale technology popularization can be promoted.

Description

technical field [0001] The invention relates to a preparation method of a tungsten oxide electron transport layer and its product and application, belonging to the technical field of inorganic nanometer materials and synthesis. Background technique [0002] In the field of solar cell research, perovskite solar cells have great application potential as a new type of solar cell, and the photoelectric conversion efficiency has increased from the initial 4% to the current 22%. Perovskite materials have excellent comprehensive properties, and can simultaneously complete multiple processes such as the absorption of incident light, the excitation, transport, and separation of photogenerated carriers. The extinction coefficient is high and the band gap width is appropriate, and electrons and holes can be transported simultaneously. . Perovskite solar cells have a simple structure and can be fabricated at low temperatures under mild conditions. [0003] As a carrier for charge sepa...

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Problems solved by technology

[0005] There are few reports on the preparation method of using nano-materials such as WOx as the dense layer of perovskite cells

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