Cu(i) chelated poly-alkoxythiophene enhancing photovoltaic device composed of a P3HT/PCBM heterojunction system | Zendy

IChe Wu | Zendy; ChengHsuan Lai | Zendy; DongYi Chen | Zendy; C.-W. Shih | Zendy; ChingYen Wei | Zendy; BaoTsan Ko | Zendy; Ching Ting | Zendy; PiTai Chou | Zendy

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Cu(i) chelated poly-alkoxythiophene enhancing photovoltaic device composed of a P3HT/PCBM heterojunction system

Author(s) -

IChe Wu,

ChengHsuan Lai,

DongYi Chen,

C.-W. Shih,

ChingYen Wei,

BaoTsan Ko,

Ching Ting,

PiTai Chou

Publication year - 2008

Publication title -

journal of materials chemistry

Language(s) - English

Resource type - Journals

eISSN - 1364-5501

pISSN - 0959-9428

DOI - 10.1039/b805141k

Subject(s) - cyclic voltammetry , heterojunction , photovoltaic system , materials science , energy conversion efficiency , electrochemistry , dielectric spectroscopy , doping , redox , chelation , optoelectronics , organic solar cell , polymer solar cell , chemical engineering , nanotechnology , electrode , chemistry , polymer , composite material , engineering , metallurgy , ecology , biology

We report the Cu+ chelated poly-alkoxythiophene (P3MEET) enhancement of a solar cell device consisting of a P3HT/PCBM heterojunction system. Compared to the reference P3HT/PCBM system, a consistent increase of conversion efficiency of 0.9% via an apparent increase of incident-photon-to-current conversion efficiency (IPCE) is achieved upon optimizing the ratio of P3MEET-Cu+ : P3HT : PCBM to 1 : 9 : 6 by weight, in which 7.5 mol% of CuBr is added upon synthesizing P3MEET-Cu+. The results, in combination with relevant data gathered from atomic force microscopy, cyclic voltammetry, and electrochemical impedance spectra, lead us to conclude that the match in redox potential and increase of ordering of the film upon doping P3MEET-Cu+ play two key roles in enhancing the performance.

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