Conductive Polymers Based on Phenothiazine-Benzothiadiazole: Synthesis, Characterization of Photovoltaics

Abstract:

Two new π-conjugated polymers (Poly[(N-10’-(octan-3-yl)-phenothiazin-3,7-ylene)-alt- (4’,7’-bis(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)] (PoPTZ-BT-BTD), Poly[(N-10`-(octan-3-yl) -phenothiazin-3,7-ylene)-alt-(4’,7’-bis(thiophen-2-yl)-5,6-bis(octyloxy)benzo[c][1,2,5]thiadiazole)] (PoPTZ-BT-BoBTD) ) were synthesized through the Suzuki coupling reaction for organic photovoltaics (OPVs), and their optical and electrochemical properties were analyzed. Their wavelength of maximun absorption was 526 nm and 506 nm in solution state, repectively, and 560 nm and 522 nm in film state, respectively. Their band-gap energy was 2.01 eV and 2.09 eV in solution state, and 1.82 eV and 1.91 eV in film state, respectively. The results of analysis of the chrateristics of photovoltaics, 0.79 % and 0.99 % of the maximum power conversion efficiencies (PCE), repectively.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 2643-2650
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.2643
• Online since: January 2013
• Authors: Dae Hee Yun, Han Sol Yoo, Tae Won Ko, Yong Sung Park, Je Wan Woo
• Keywords: Benzothiadiazole Derivatives, Conductive Polymer, Organic Photovoltaics (OPVs), Phenothiazine Derivatives, Suzuki Coupling Reaction

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