Heterojunction solar battery composed of amorphous silicon/crystalline silicon/beta-FeSi2
A technology of solar cells and crystalline silicon, applied in the field of solar cells, can solve the problems that the photoelectric conversion efficiency is difficult to reach crystalline silicon cells, β-FeSi effective and controllable doping, high built-in potential and open circuit voltage, etc., and achieve high temperature performance improvement , good surface passivation, wide band gap
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[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following specific embodiments are combined with reference to the attached figure 1 , To further explain the present invention in detail:
[0025] See attached figure 1 , A type of amorphous silicon / crystalline silicon / β-FeSi 2 A heterojunction solar cell composed of a light-receiving surface electrode 15, a transparent conductive layer 14, a p+-type amorphous silicon layer 11, a p-type crystalline silicon layer 10, and an i-type β-FeSi 2 Layer 12, n + type amorphous silicon layer 13 and back metal electrode 16, forming P + PIN + Heterojunction structure.
[0026] The light-receiving surface electrode 15 is an Ag electrode with a thickness of 20um. The light-receiving surface electrode 15 mainly functions to collect light-receiving surface current.
[0027] The transparent conductive layer 14 adopts an ITO film with a thickness of 80 nm, a light transmittance of 87%, and...
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