Complementary absorbing ternary blend containing structural isomeric donor polymers for improving the performance of PC61BM-based indoor photovoltaics
作者： Dong Hoon Choi , Min Ju Cho , Han Young Woo , Su Hong Park , Na Yeon Kwon
DOI: 10.1016/J.POLYMER.2021.123606
关键词:
摘要: Abstract In this study, two structural isomeric polymers, TTE36 and TTE25, were synthesized their photophysical properties photovoltaic device performance investigated. Because of the different linking positions carboxylate in thienothiophene unit, these polymers can be classified as isomers exhibit significantly properties. A mixture was effectively applied donor for a highly reliable active layer organic indoor photovoltaics (IPVs) because its good miscibility, especially, broad complementary absorption which overlapped emission spectrum white light-emitting diode lamp. The ternary IPV system, achieved by mixing wide-bandgap TTE25 polymer with medium-bandgap polymer, followed blending [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM), exhibited enhanced open circuit voltage short current density, thus improving power conversion efficiency (PCE) system. Compared to TTE36:PC61BM-binary-blend-based TTE36:TTE25:PC61BM (0.8:0.2:1.0 wt ratio)-ternary-blend-based system an increase PCE from 6.81% 11.15% under 1000 lux LED light illumination. These results indicate that addition TTE36:PC61BM binary blend improves morphology light-harvesting layer.
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