Preparation method of common pole-type thin film solar cell

Abstract

A common pole-type thin film solar cell relates to the fields of thin film technology and new energy development technology, and consists of a glass substrate, an ITO transparent electrode, a p layer (p+ and p), an i layer, an n layer, the i layer, the p layer (p and p+) and the ITO electrode from a bottom layer to a top layer; a lead wire is led out from the upper ITO transparent electrode layerand the lower ITO transparent electrode layer as a common electrode and is taken as an anode, and the lead wire led out from the n layer is taken as an cathode. The common pole-type thin film solar cell has good stability, light acceptance at two sides, low internal resistance loss, high conversion efficiency, high filling factor and good I-V characteristic.

Description

technical field [0001] The invention relates to the field of thin-film technology and new energy development technology, and uses thin-film materials to prepare thin-film solar cells with a novel double-sided light-receiving structure, in particular to a common-pole thin-film solar cell. Background technique [0002] Since the first amorphous silicon thin-film solar cell came out in the 1970s, the advantages of less power consumption, low water consumption, and material cost are only 1% of bulk silicon materials have been unanimously approved by authorities in the same industry at home and abroad. And known as "the first generation of solar cells." On this basis, the second-generation thin-film solar cells have realized large-area production with cheap materials such as ordinary glass, plastic, and stainless steel sheets as substrates. In recent years, in order to further improve the problems existing in the first and second generation solar cells, continue to reduce costs ...

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Problems solved by technology

However, in order to ensure that the focal spot converges on the concentrating cell, the concentrator and the concentrating cell need to be installed on a sun tracking device, and the sun needs to be tracked, which requires adding additional power, control devices and strict wind resistance measures to the system. ; At the same time, when working under high light intensity, the temperature of the concentrating thin film solar cell will rise significantly, and at this time the solar cell must be forced to cool down

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