Issue 29, 2014

Enhanced power conversion efficiency of inverted organic solar cells by using solution processed Sn-doped TiO2 as an electron transport layer

Abstract

We have investigated the photovoltaic properties of inverted solar cells comprising a bulk heterojunction film of thieno[3,4-b]-thiophene/benzodithiophene (PTB7) and [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM), sandwiched between indium tin oxide (ITO)/Sn-doped TiO2 front and MoO3/aluminum back electrodes. The inverted organic solar cell (IOSC) fabricated with a Sn-doped TiO2 film showed a significantly greater power conversion efficiency of 7.59%, compared to that of the TiO2 film (6.70%). Further studies confirm that the improved morphology and electrical properties of the Sn-doped TiO2 film result in reduced shunt loss and interfacial charge recombination and hence enhanced photovoltaic performance.

Graphical abstract: Enhanced power conversion efficiency of inverted organic solar cells by using solution processed Sn-doped TiO2 as an electron transport layer

Supplementary files

Article information

Article type
Paper
Submitted
29 Jan 2014
Accepted
28 Apr 2014
First published
30 Apr 2014

J. Mater. Chem. A, 2014,2, 11426-11431

Enhanced power conversion efficiency of inverted organic solar cells by using solution processed Sn-doped TiO2 as an electron transport layer

M. Thambidurai, J. Y. Kim, H. Song, Y. Ko, N. Muthukumarasamy, D. Velauthapillai, V. W. Bergmann, S. A. L. Weber and C. Lee, J. Mater. Chem. A, 2014, 2, 11426 DOI: 10.1039/C4TA00531G

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