A Selenium‐Substituted Low‐Bandgap Polymer with Versatile Photovoltaic Applications

• DOI: 10.1002/adma.201203827
• Publication Date: 2012-11-02T09:18:28Z
• Authors: Letian Dou; Wei‐Hsuan Chang; Jing Gao; Chun‐Chao Chen; Jingbi You; Yang Yang
• Keywords: Tandem

A reduction of the bandgap and an enhancement charge transport properties a LBG polymer (PBDTT-DPP) can be achieved simultaneously by changing sulfur atoms on 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% photo-response up 900 nm. tandem solar cell visibly transparent based show 9.5% 4.5% PCEs, which are superior those PBDTT-DPP. As service our authors readers, this journal provides supporting information supplied authors. Such materials peer reviewed may re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising from (other than missing files) should addressed Please note: publisher is responsible content functionality any Any queries content) directed corresponding author article.