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- Title
D-A Conjugated Polymers Based on Tetracyclic Acceptor Units: Synthesis and Application in Organic Solar Cells.
- Authors
Chen, Jianhua; Liao, Qiaogan; Ye, Gang; He, Dan; Du, Xiaoyan; Zhu, Weiguo; Liao, Jianhe; Xiao, Zuo; Ding, Liming
- Abstract
Two electron-deficient tetracyclic monomers, 6,9-dibromo-7,8-bis(octyloxy)-11H-indeno[2,1-b] quinoxalin-11-one ( M1) and 1,3-bis(5′-bromo-4′-hexylthiophen-2-yl)-9H-indeno[1,2-b]thieno[3,4-e]pyrazin-9-one ( M2), are synthesized through condensation of ninhydrin with aromatic diamines in good yields. Copolymerization of M1 with thiophene (Th) and dithieno[3,2-b:2′,3′-d]silole (DTS), and M2 with DTS affords three new D-A conjugated copolymers, P1- P3, respectively. The optical, electrochemical, and photovoltaic properties of P1-P3 are investigated. P3 exhibits a broad absorption (300-1100 nm) and a low bandgap of 1.24 eV. Solar cells based on P3/[6,6]-phenyl C71 butyric acid methyl ester (PC71BM) blends afford a power conversion efficiency of 1.93% and a very broad spectral response (300-1020 nm).
- Subjects
SOLAR batteries; PHOTOVOLTAIC cells; DIRECT energy conversion; ORGANIC compounds; FATTY acids
- Publication
Macromolecular Chemistry & Physics, 2013, Vol 214, Issue 18, p2054
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201300294