Equivalent circuit analysis of radiative coupling in monolithic tandem solar cells

Journal Article · Mon Jun 29 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4923209· OSTI ID:22483133

Lan, Dongchen; Green, Martin A. ^[1]

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1. Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney 2052 (Australia)

As solar cell efficiency improves towards the Shockley-Queisser limit, so does the radiative efficiency of the cell. For tandem stacks of cells where energy conversion efficiency now exceeds 46%, radiative coupling between the cells is becoming increasingly important to consider in cell design, measurement, and performance prediction. We show how an equivalent circuit model can capture the complex radiative interactions between cells in such tandem stacks, allowing more insight into the impact on cell performance. The circuit's use is demonstrated by deriving results relevant to the critical step of eliminating coupling effects from measured cell spectral responses.

• OSTI ID: 22483133
• Journal Information: Applied Physics Letters, Vol. 106, Issue 26; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CAPTURE
COUPLING
DESIGN
EFFICIENCY
ENERGY CONVERSION
EQUIVALENT CIRCUITS
PERFORMANCE
SOLAR CELLS
SPECTRAL RESPONSE