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

Dou Letian | Zendy; Chang WeiHsuan | Zendy; Gao Jing | Zendy; Chen ChunChao | Zendy; You Jingbi | Zendy; Yang Yang | Zendy

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

Author(s) -

Dou Letian,

Chang WeiHsuan,

Gao Jing,

Chen ChunChao,

You Jingbi,

Yang Yang

Publication year - 2013

Publication title -

advanced materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 10.707

H-Index - 527

eISSN - 1521-4095

pISSN - 0935-9648

DOI - 10.1002/adma.201203827

Subject(s) - materials science , photovoltaic system , polymer , tandem , band gap , nanotechnology , selenium , solar cell , optoelectronics , engineering physics , electrical engineering , physics , metallurgy , composite material , engineering

A reduction of the bandgap and an enhancement of the charge transport properties of a LBG polymer (PBDTT‐DPP) can be achieved 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.

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