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Design criteria for amorphous/crystalline silicon heterojunction solar cells - a simulation study

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4 Author(s)
Stangl, R. ; Dept. Silizium Photovoltaik, Hahn-Meitner-Inst. Berlin, Germany ; Froitzheim, A. ; Schmidt, M. ; Fuhs, W.

Amorphous/crystalline silicon heterojunction solar cells, TCO/a-Si:H(n)/c-Si(p), are investigated by means of numerical computer simulation. The influence of (1) the a-Si:H(n) emitter thickness, (2) the defect density of the emitter/wafer interface and (3) the TCO/emitter front contact system on the solar cell-performance is studied and compared with experimental results. The use of an intrinsic a-Si:H(i) buffer layer and of a p-doped a-Si:H(p) back surface field layer is addressed, modelling TCO/a-Si:H(n)/a-Si:H(i)/c-Si(p)/a-Si:H(p) solar cell structures. Some general design criteria for a-Si:H/c-Si heterojunction solar cells are derived, suggesting an optimum emitter thickness for a given (measured) front contact TCO/emitter built-in potential.

Published in:

Photovoltaic Energy Conversion, 2003. Proceedings of 3rd World Conference on  (Volume:2 )

Date of Conference:

18-18 May 2003