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Efficient heterojunction solar cells on p-type crystal silicon wafers

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15 Author(s)
Qi Wang ; NCPV, National Renewable Energy Laboratory (NREL), Golden, Colorado 80401, USA ; Page, M.R. ; Iwaniczko, E. ; Xu, Yueqin
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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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Applied Physics Letters  (Volume:96 ,  Issue: 1 )