Syntheses of New 3,6-Carbazole-Based Donor/Acceptor Conjugated Copolymers for Optoelectronic Device Applications
✍ Scribed by Mei-Hsiu Lai; Jung-Hsun Tsai; Chu-Chen Chueh; Chih-Feng Wang; Wen-Chang Chen
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 499 KB
- Volume
- 211
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
The syntheses, properties, and optoelectronic device characteristics of four new 3,6‐carbazole‐based donor/acceptor conjugated copolymers are reported. Such copolymers are used to explore the effects of acceptor strength and backbone coplanarity on the electronic and optoelectronic properties. The optical bandgaps of the studied copolymers are PCzQ (2.29 eV) > PCzDTQ (1.91 eV) > PCzTP (1.75 eV) > PCzDTTP (1.49 eV), which are much smaller than the parent poly(3,6‐carbazole). The power conversion efficiency of the photovoltaic cells fabricated from blends of copolymer/PC~61~BM or PC~71~BM reached 1.01 and 1.73% by varying the film thickness or blend ratio. The experimental results suggest the potential application of 3,6‐carbazole acceptor conjugated copolymers in optoelectronic devices.
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