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Issue 1, 2011
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Transparent electrode requirements for thin film solar cell modules

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Abstract

The transparent conductor (TC) layer in thin film solar cell modules has a significant impact on the power conversion efficiency. Reflection, absorption, resistive losses and lost active area either from the scribed interconnect region in monolithically integrated modules or from the shadow losses of a metal grid in standard modules typically reduce the efficiency by 10–25%. Here, we perform calculations to show that a competitive TC must have a transparency of at least 90% at a sheet resistance of less than 10 Ω/sq (conductivity/absorptivity ≥ 1 Ω−1) for monolithically integrated modules. For standard modules, losses are much lower and the performance of alternative lower cost TC materials may already be sufficient to replace conducting oxides in this geometry.

Graphical abstract: Transparent electrode requirements for thin film solar cell modules

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Publication details

The article was received on 20 Aug 2010, accepted on 20 Oct 2010 and first published on 05 Nov 2010


Article type: Communication
DOI: 10.1039/C0EE00373E
Citation: Energy Environ. Sci., 2011,4, 131-134
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    Transparent electrode requirements for thin film solar cell modules

    M. W. Rowell and M. D. McGehee, Energy Environ. Sci., 2011, 4, 131
    DOI: 10.1039/C0EE00373E

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