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- W2155155144 abstract "Internal photoemission of both electrons and holes was used to investigate the movement of mobility edges in a-Si:H. Shifts of the electron mobility edges were observed with changes in the optical gap, E/sub opt/ due to temperature and incorporation of hydrogen. Mobility gaps of 1.8 to 1.9 eV were measured for plasma-assisted CVD (chemical-vapor-deposited) films with optical gaps from 1.73 to 1.76 eV. The large effects of the differences between E/sub opt/ and the mobility gap in a-Si:H on solar cell performance are demonstrated using detailed numerical modeling of the maximum open-circuit voltage. The results obtained show that, for the commonly used a-Si:H materials with E/sub opt/ from 1.70 to 1.75 eV, the maximum open-circuit voltage that can be obtained, even with p-i-n homojunction cells, is 1.0 eV. This indicates that the V/sub oc/ in present solar cells is not limited by the intrinsic properties of the a-Si:H.< <ETX xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>></ETX>" @default.
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- W2155155144 date "2002-12-04" @default.
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- W2155155144 title "The mobility gaps in a-Si:H and its effects on solar cell performance" @default.
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- W2155155144 doi "https://doi.org/10.1109/pvsc.1990.111884" @default.
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