Luo Jiasi, Wang Yang, Liu Bin, Wu Ziang, Zhang Yujie, Tang Yumin, Chen Peng, Liao Qiaogan, Woo Han Young, Guo Xugang
Department of Materials Science and Engineering, The Shenzhen Key Laboratory for Printed Organic Electronics, Southern University of Science and Technology (SUSTech) No. 1088, Xueyuan Road Shenzhen Guangdong 518055 China
Department of Chemistry, Korea University Seoul 02841 South Korea.
RSC Adv. 2019 Nov 14;9(64):37287-37291. doi: 10.1039/c9ra07911d. eCollection 2019 Nov 13.
An isomerization method was utilized to yield a novel near-infrared nonfullerene acceptor DTA-IC-M. By simply changing the linking fashion between the anthracene and neighboring thiophenes, a remarkable redshift (∼170 nm) of absorption was observed from DTA-IC-S to its isomer DTA-IC-M which shows a maximum absorption peak over 800 nm with a narrow bandgap of 1.35 eV. Due to the enhanced photo-to-current response in the near-infrared region, an improved short-circuit current of 12.96 mA cm was achieved for the DTA-IC-M based OSCs.
采用异构化方法制备了一种新型近红外非富勒烯受体DTA-IC-M。通过简单改变蒽与相邻噻吩之间的连接方式，从DTA-IC-S到其异构体DTA-IC-M观察到显著的吸收红移（约170 nm），DTA-IC-M在800 nm以上呈现最大吸收峰，带隙窄至1.35 eV。由于近红外区域光电流响应增强，基于DTA-IC-M的有机太阳能电池实现了12.96 mA cm的短路电流。
