Abstract

CdTe/CdS heterojunction solar cells of 11% efficiency have been produced by close-spaced sublimation of highly oriented large-grain p-CdTe films at a deposition-rate of above 5 mu m/min in a nitrogen-ambient at a pressure of 10/sup -1/ mbar, using a very thin evaporated n-CdS film. Internal quantum efficiencies are close to 100% over a broad spectral range. A realistic potential of >15% is estimated for this cell. >

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