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Electroabsorption studies of organic p-i-n solar cells: evaluating the built-in voltage
Published online by Cambridge University Press: 16 January 2014
Abstract
We investigate the built-in voltage in organic bulk heterojunction solar cells using electroabsorption spectroscopy based on the Stark effect, i.e. the variation of the absorption energies of a material caused by an electric field. Due to spectral contributions of permanent dipoles, a novel approach for evaluating the EA spectra is required. We use a fitting routine analyzing a broad spectral range instead of using only a single wavelength. A reliable quantitative determination of the built-in voltage is achieved.
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- MRS Online Proceedings Library (OPL) , Volume 1639: Symposium Y – Adaptive Soft Matter through Molecular Networks , 2014 , mrsf13-1639-y07-01
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- Copyright © Materials Research Society 2014
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