Role of Localized States on Carrier Transport in Bulk Heterojunction Materials Comprised of Organic Small Molecule Donors. (19th December 2013)

• Record Type: Journal Article
• Authors: Zhong, Chengmei; Huang, Fei; Cao, Yong; Moses, Daniel; Heeger, Alan J.
• Is Part Of: Advanced materials. Volume 26:Number 15(2014)
• Page Start: 2341
• Page End: 2345
• Publication Date: 2013-12-19
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201304791
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en" id="adma201304791-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>The photocarrier transport properties</bold> in two leading molecular bulk‐heterojunction systems, p‐DTS(PTTh₂)₂:PC₇₁BM and p‐DTS(FBTTh₂)₂:PC₇₁BM, are studied using transient photoconductivity measurements. We find that in these systems shallow trap states are distributed at relatively narrow energy range, giving rise to time‐independent carrier mobility in the nanosecond time regime that evidently contributes to the high performance of molecular‐based OPV devices. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg58fbxrf6" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>