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Issue 12, 2012
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High performance polymeric charge recombination layer for organic tandem solar cells

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Abstract

We report on inverted polymer tandem solar cells wherein the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), modified at one interface with ethoxylated polyethylenimine (PEIE), acts as an efficient charge recombination layer. This recombination layer shows very low optical absorption, high electrical conductivity, and a large work function contrast of 1.3 eV between its top and bottom interfaces. Its use yields tandem cells in which the open-circuit voltage is the sum of that of individual cells. The fill factor of tandem cells connected in series is found to be larger than that of single-junction cells. Its simple polymeric composition and its unprecedented performance make it a promising component for emerging organic photovoltaic technologies.

Graphical abstract: High performance polymeric charge recombination layer for organic tandem solar cells

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Supplementary files

Article information


Submitted
27 Aug 2012
Accepted
09 Oct 2012
First published
09 Oct 2012

Energy Environ. Sci., 2012,5, 9827-9832
Article type
Paper

High performance polymeric charge recombination layer for organic tandem solar cells

Y. Zhou, C. Fuentes-Hernandez, J. W. Shim, T. M. Khan and B. Kippelen, Energy Environ. Sci., 2012, 5, 9827
DOI: 10.1039/C2EE23294D

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