Amorphous silicon solar cell with multiple longitudinally distributed adsorption layers
A technology of solar cells and vertical distribution, applied in the field of solar energy utilization, can solve the problems that the influence of the N-P reverse junction cannot be completely eliminated, increase the difficulty and complexity of the process, etc., to reduce the effect of light to fading, improve the conversion efficiency of solar energy, and utilize the spectrum rate-enhancing effect
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[0025] An amorphous silicon solar cell with multiple absorption layers distributed longitudinally, its structure is as follows image 3 As shown, it includes a transparent glass substrate 1, a TCO transparent conductive film 2, a P-type semiconductor layer 3, a buffer layer 4, an amorphous silicon light-absorbing layer 5, an N-type semiconductor layer 6, and a metal electrode stacked sequentially from top to bottom. 7. Wherein the amorphous silicon light-absorbing layer 5 is composed of a plurality of amorphous silicon light-absorbing sub-layers whose optical bandgap widths are successively reduced along the longitudinal direction from top to bottom sequentially stacked (such as Figure 4 shown).
[0026] The present invention provides an amorphous silicon solar cell with multi-absorbing layers distributed vertically, wherein the multiple amorphous silicon light-absorbing sub-layers have the same thickness, and the different optical bandgap widths between the multiple amorpho...
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