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Improvement in open circuit voltage of organic solar cells by inserting a thin phosphorescent iridium complex layer
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/content/aip/journal/apl/97/14/10.1063/1.3492838
2010-10-04
2014-10-25

Abstract

The authors develop organic solar cells (OSCs) with a multicharge separation (MCS)interface by inserting thin layer of phosphorescent bis(2-(4-tertbutylphenyl) benzothiazolato-) iridium (acetylacetonate) comparing with copper phthalocyanine (CuPc) between pentacene/heterojunction. The result showed that open circuit voltage is remarkably enhanced without obviously changing external quantum efficiency and short-circuit current density. As a result, power conversion efficiency is improved from 1.53% for pentacene/device to 1.83% with sandwich layer and 1.98% with CuPc. Moreover, a suitable equivalent circuit model is proposed to intuitively reveal the inner photogeneration process of OSC with MCSinterface.

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Scitation: Improvement in open circuit voltage of organic solar cells by inserting a thin phosphorescent iridium complex layer
http://aip.metastore.ingenta.com/content/aip/journal/apl/97/14/10.1063/1.3492838
10.1063/1.3492838
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