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Enhanced performance in polymer solar cells by the use of a halogenated indium tin oxide anode
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Figures

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FIG. 1.

J-V characteristics of PSCs with a structure of anode/P3HT:PCBM/Ca/Al under AM1.5G, 100 mW cm−2 simulated solar illuminations. The anode used was bare (▪), PEDOT:PSS buffered (●), and chlorinated (▲) ITO.

Image of FIG. 2.

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FIG. 2.

The secondary electron cutoff region of the UPS spectra of bare (▪), PEDOT:PSS buffered (●), and chlorinated (▲) ITO. The Fermi level is referenced as the zero binding energy.

Image of FIG. 3.

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FIG. 3.

J-V characteristics of PSCs with a structure of anode/PCDTBT:PCBM/Ca/Al under AM1.5G, 100 mW cm−2 simulated solar illuminations. The anode used was bare (▪), PEDOT:PSS buffered (●), and chlorinated (▲) ITO.

Tables

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Table I.

Summary of performance parameters of P3HT:PC61BM devices using different anode surfaces.

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Table II.

Summary of performance parameters of PCDTBT:PC71BM devices using different anode surfaces.

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/content/aip/journal/apl/102/5/10.1063/1.4790624
2013-02-04
2014-04-17

Abstract

Use of a halogenated, surface-modified indium tin oxide (ITO) anode was found to enhance the photovoltaic performance of a bulk heterojunction (BHJ) polymer solar cell using poly[N-9′-heptadecanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) by as much as 29% but produced no enhancement in a BHJ device using poly(3-hexylthiophene). The position of the positive polaronic state of the polymer was found to be crucial to the enhancement. A power conversion efficiency of 6.27% for a PCDTBT-based BHJ device was achieved by using a chlorinated ITO anode without the needs of using any modifying interlayer or optical spacer at the cathode.

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Scitation: Enhanced performance in polymer solar cells by the use of a halogenated indium tin oxide anode
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/5/10.1063/1.4790624
10.1063/1.4790624
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