A Selenium‐Substituted Low‐Bandgap Polymer with Versatile Photovoltaic Applications. (2nd November 2012)

• Record Type: Journal Article
• Authors: Dou, Letian; Chang, Wei‐Hsuan; Gao, Jing; Chen, Chun‐Chao; You, Jingbi; Yang, Yang
• Is Part Of: Advanced materials. Volume 25:Number 6(2013)
• Page Start: 825
• Page End: 831
• Publication Date: 2012-11-02
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adma.201203827
• Languages: English
• ISSNs: 0935-9648

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>A reduction of the bandgap and an enhancement of the charge transport properties of a LBG polymer (PBDTT‐DPP) can be achieved</bold> simultaneously by changing the sulfur atoms on the DPP unit to selenium atoms. The newly designed polymer, PBDTT‐SeDPP (Eg = 1.38 eV), shows excellent photovoltaic performance in single junction devices with power conversion efficiencies (PCEs) over 7% and photo‐response up to 900 nm. A tandem polymer solar cell and a visibly transparent solar cell based on PBDTT‐SeDPP show 9.5% and 4.5% PCEs, which are superior to those based on PBDTT‐DPP. <boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg1ts4cc0r" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>