Thinfilm solar cell component and its manufacturing method

Abstract

The method includes steps: first, forming a first conducting layer on substrate; next, forming a buffer layer composed of Nano particles on the first conducting layer; then, carrying out selenylation process on the buffer layer; finally, forming selenylation alloy layer, second conducting layer and anti-reflecting layer on the buffer layer in sequence.

Description

technical field [0001] The present invention relates to a solar cell and its manufacturing method, and in particular to a thin-film solar cell element and its manufacturing method. Background technique [0002] In order to reduce energy consumption and avoid environmental pollution caused by fuel energy, one of the most popular research topics in recent years is to develop solar energy as an alternative energy source. Copper indium selenide (CIS) or copper indium gallium selenide (CIGS) solar cells in thin film solar cells have become one of the most widely used solar cells due to their low cost and mass production, such as clocks, electronic computers, etc. Its traces can be seen in people's livelihood electricity such as household roofs and street lamps. [0003] However, there are still many problems to be solved in this thin-film solar cell. For example, due to insufficient bonding force at the interface of the thin film, peeling between the film layers often occurs, w...

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Problems solved by technology

[0003] However, there are still many problems to be solved in this kind of thin film solar cells.

For example, due to the lack of bonding force at the interface of the thin film, it often causes peeling between the film layers, which will not only lead to a decrease in the reliability and stability of the battery, but even cause the solar cell to fail

[0004] Although the existing technology uses the heterostructure as a buffer layer to solve the problem of interfacial peeling between the film layers, the formation of the heterostructure will reduce the photoelectric conversion efficiency, resulting in low battery efficiency and inconvenient use.

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