Selenylation furnace for treating and preparing CIGS (Copper Indium Gallium Diselenide) solar cell absorbing layer and manufacturing method thereof

Abstract

The invention relates to a selenylation furnace for forming an absorbing layer with a chalcopyrite phase structure by performing continuous and rapid selenization on a prefabricated layer of a flexible CIGS (Copper Indium Gallium Diselenide) solar sell with a solid-sate selenium source method. Both sides of the furnace are provided with transmission devices; the main body of the furnace consists of four parts, i.e., a transition section, a rapid heating region, a high-temperature selenium sulfurization region and a cooling region respectively; the transition region, the rapid heating region and the cooling region are filled with protective atmospheres; the high-temperature selenium sulfurization region is a mixed atmosphere of nitrogen or argon, Se and S steam; a hearth is a long, narrow and flat channel; narrow gaps are formed at an inlet, an outlet and corresponding positions where the regions are in butt joint; a gas curtain formed by inert gas is used for preventing the entrance of air and mixing of gases in different regions; the transition section and the cooling region are provided with water cooling devices; the lower part of the hearth in the high-temperature selenium sulfurization region is provided with an air cushion device for preventing the back face of a substrate from being sulfurized; and a selenium steam supply device of the selenization furnace is used for realizing convenient controllability of the selenium steam.

Description

technical field

[0001] The invention relates to a selenization furnace and a preparation method for processing and preparing CIGS solar cell absorbing layers, in particular to a selenizing furnace for forming an absorbing layer through continuous rapid selenization of flexible CIGS solar cell prefabricated layers by using a solid-state selenium source method and preparation method. Background technique

[0002] Solar energy is inexhaustible, clean, and available everywhere. Under the background of energy crisis, environmental pollution and global warming in today's world, using solar energy to replace traditional energy is one of the effective ways to solve the energy crisis. A solar cell is a device that converts solar energy into electricity. The key to popularization and application of solar cells is cost reduction. The cost of solar cells includes the consumption of materials, preparation equipment, production time and production energy consumption. Compared with mon...

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