Utilizing perylene diimmide as dopant to improve thermoelectric performance of PEDOT:PSS films

作者：Jia, Yanhua; Jiang, Qinglin^*; Wang, Bohan; Ma, Zetong; Zhao, Duokai; Zheng, Nan; Zhou, Jiadong; Liu, Peipei; Hu, Dehua; Ma, Yuguang^*

来源：COMPOSITES COMMUNICATIONS, 2021, 27: 100844.

DOI：10.1016/j.coco.2021.100844

• Perylene diimmide
• Dopant
• PEDOT:PSS film
• Thermoelectric performance

Doping plays a crucial role in tuning charge transport of organic thermoelectric (TE) materials. A typical n-type organic semiconductors, perylene diimmide (PDI), was used as a dopant to improve the TE performance of PEDOT:PSS films. At 10 wt% PDI content, the electrical conductivity (1500 S cm(-1)) and Seebeck coefficient (36.7 mu V K-1) of PEDOT:PSS/PDI films were improved by 20% and 109%, respectively. The doping may arise from the interaction between the lone-pair electrons of nitrogen in PDI and the polamns of PEDOT. This work offers a new though for developing new dopant to tune TE performance of conducting polymers.