Thin-film solar cell and method for preparing same
A solar cell and thin film technology, applied in the field of solar cells, can solve the problems of low interface photo-generated carrier recombination probability, incompatibility of solar cell internal resistance, low photo-generated carrier recombination probability, etc., so as to reduce internal resistance and improve Output power, the effect of reducing the probability of recombination
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[0033] Example 1
[0034] This embodiment provides a thin-film solar cell and a preparation method thereof. The thin-film solar cell includes a back electrode layer 201, a light absorption layer 301, a buffer layer 302, and a high-resistance window layer 303 which are sequentially prepared in a vertical direction of a transparent substrate 101. , A low resistance window layer 304 and a collection electrode 401; two electrode grooves 305 are formed on the low resistance window layer 304, and the collection electrode 401 is deposited in the electrode groove 305 and exposed to the low resistance window layer 304. The window layer 304 is outside the plane; the depth direction of the electrode groove 305 is perpendicular to the plane where the low resistance window layer 304 is located, and the depth of the electrode groove 305 is less than or equal to the buffer layer 302 and the high resistance window layer 303 and the sum of the thickness of the low resistance window layer 304.
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