Issue 12, 2012

High performance polymeric charge recombination layer for organic tandem solar cells

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

Supplementary files

Article information

Article type
Paper
Submitted
27 Aug 2012
Accepted
09 Oct 2012
First published
09 Oct 2012

Energy Environ. Sci., 2012,5, 9827-9832

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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