External quantum efficiency enhancement in organic photovoltaic devices employing dual organic anode interfacial layers

Tyler Fleetham, Barry O'Brien, John P. Mudrick, Jiangeng Xue, Jian Li

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Abstract

We demonstrate the use of a dual anode interfacial layer of poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS) and tetracene for efficient small molecule organic solar cells. These layers provided a multifaceted improvement on device performance by enhancing absorption in the donor layer, serving as an exciton blocking layer at the anode interface, providing a low resistance anode contact, and serving as a templating layer for increased crystallinity in the donor layer. Palladium phthalocyanine/C60 planar heterojunction devices fabricated on top of the dual layers of PEDOT:PSS and tetracene demonstrates 85% enhancement in the donor contribution to external quantum efficiency and yielded a maximum power conversion efficiency of 3.66%.

Original languageEnglish (US)
Article number083303
JournalApplied Physics Letters
Volume103
Issue number8
DOIs
Publication statusPublished - Aug 19 2013

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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