Efficient heterojunction solar cells on p-type crystal silicon wafers

Qi Wang; Page, M. R.; Iwaniczko, E.; Yueqin Xu; Roybal, L.; Bauer, R.; To, B.; Yuan, H.-C.; Duda, A.; Hasoon, F.; Yan, Y. F.; Levi, D.; Meier, D.; Branz, Howard M.; Wang, T. H.
January 2010
Applied Physics Letters;1/4/2010, Vol. 96 Issue 1, p013507
Academic Journal
Efficient crystalline silicon heterojunction solar cells are fabricated on p-type wafers using amorphous silicon emitter and back contact layers. The independently confirmed AM1.5 conversion efficiencies are 19.3% on a float-zone wafer and 18.8% on a Czochralski wafer; conversion efficiencies show no significant light-induced degradation. The best open-circuit voltage is above 700 mV. Surface cleaning and passivation play important roles in heterojunction solar cell performance.


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