Cu(i) chelated poly-alkoxythiophene enhancing photovoltaic device composed of a P3HT/PCBM heterojunction system
Resource
Journal of Materials Chemistry 18, 4297-4303
Journal
Journal of Materials Chemistry
Journal Volume
18
Journal Issue
36
Pages
4297-4303
Date Issued
2008
Author(s)
Wu, I-Che
Lai, Cheng-Hsuan
Chen, Dong-Yi
Shih, Chun- Wei
Wei, Ching-Yen
Ko, Bao-Tsan
Ting, Ching
Abstract
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. © The Royal Society of Chemistry 2008.
SDGs
Other Subjects
Copper; Hetero junction; Photovoltaic devices; Copper alloys
Type
journal article
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