Reduction of Absorption Losses and Efficiency Gains by Investigating Amorphous/Cristalline SHJ Rear Emitter Solar Cells

Glunz, Stefan W.; Hermle, Martin; Schön, Jonas; Bivour, Martin; Schröer, Sebastian

doi:10.4229/27theupvsec2012-2co.14.6

27th European Photovoltaic Solar Energy Conference and Exhibition; 759-762 2012

DOI: 10.4229/27theupvsec2012-2co.14.6

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Reduction of Absorption Losses and Efficiency Gains by Investigating Amorphous/Cristalline SHJ Rear Emitter Solar Cells

Stefan W. Glunz

Martin Hermle²,

Jonas Schön³

et al.

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2015

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Role of the Front Electron Collector in Rear Emitter Silicon Heterojunction Solar Cells

Varache

Aguila

Valla

et al. 2015

IEEE J. Photovoltaics

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Front electron collectors in rear emitter hydrogenated amorphous silicon/crystalline silicon (a-Si:H/c-Si) solar cells are comprehensively investigated with the objective of increasing cell power conversion efficiency. Since such cells benefit from the lateral electron conductivity of the n-doped substrate, the electrical constraint on the front transparent conductive oxide (TCO) layer is relaxed. However, cell improvement is only expected if the front side is optimized. Here, we present our understanding of recombination losses in the front amorphous silicon layers and at the a-Si:H/c-Si interface, which determine the short-circuit current. In addition, we show how the TCO/(n + i)a-Si:H/(n)c-Si contact has to be finely engineered to minimize the resistance for electrons to be extracted. Both points are addressed through experimental and simulation works.

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Role of the Front Electron Collector in Rear Emitter Silicon Heterojunction Solar Cells

Varache

Aguila

Valla

et al. 2015

IEEE J. Photovoltaics

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show abstract

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Reduction of Absorption Losses and Efficiency Gains by Investigating Amorphous/Cristalline SHJ Rear Emitter Solar Cells

Cited by 1 publication

References 3 publications

Role of the Front Electron Collector in Rear Emitter Silicon Heterojunction Solar Cells

Role of the Front Electron Collector in Rear Emitter Silicon Heterojunction Solar Cells

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