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A milky tinoxide on glass (MTG) substrate thin undoped layer p-i-n amorphous silicon solar cell with improved stability and relatively high efficiency

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4 Author(s)
Iida, H. ; Taiyo Yuden Company, Ltd., Gunma, Japan ; Mishuku, T. ; Sakata, I. ; Hayashi, Y.

It has been clarified that p-i-n type a-Si:H solar cells fabricated on large-grain SnO2on glass (milky tin oxide on glass (MTG)) substrates with thin (∼ 0.2-µm) undoped (i-) layers have comparable high conversion efficiencies (η > 7 percent) and higher stability against the prolonged illumination of intense light when compared with thicker (∼ 0.5m-µm) i-layer cells with conventional transparent conductive oxide. The observed high stability was explained qualitatively by the dependence of the recombination rate of photogenerated (PG) carriers in undoped a-Si:H on the i-layer thickness.

Published in:

Electron Device Letters, IEEE  (Volume:5 ,  Issue: 3 )