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Lookup NU author(s): Dr Suresh Uppal
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This article investigates limitations to the open circuit voltage of n-type amorphous silicon/p-type crystalline silicon heterojunction solar cells. The analysis of quantum efficiency and temperature dependent current/voltage characteristics identifies the dominant recombination mechanism. Depending on the electronic quality of the crystalline silicon absorber, either recombination in the neutral bulk or recombination in the space charge region prevails; recombination at the heterointerface is not relevant. Although interface recombination does not limit the open circuit voltage, recombination of photogenerated charge carriers at the heterointerface or in the amorphous silicon emitter diminishes the short circuit current of the solar cells.
Author(s): Uppal S; Jensen N; Rau U; Hausner RM; Oberbeck L; Bergmann RB; Werner JH
Publication type: Article
Publication status: Published
Journal: Journal of Applied Physics
Year: 2000
Volume: 87
Issue: 5
Pages: 2639
ISSN (print): 0021-8979
ISSN (electronic): 1089-7550
Publisher: American Institute of Physics
URL: http://dx.doi.org/10.1063/1.372230
DOI: 10.1063/1.372230
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