"Side Chain Engineering of Fused Ar omatic Thienopyrazine based Low Band-gap Polymers for Enhanced Charge Carrier Mobility "

Rajib Mondal: Sangwon Ko, Eric Verploegen, Hector A. Becerril, Michael F. Toney, and Zhenan Bao; Journal of Materials Chemistry, 09/01/20.

Additional Authors: Sangwon Ko, Eric Verploegen, Hector A. Becerril, Michael F. Toney, and Zhenan Bao

Abstract:

A strategic side-chain engineering approach leads to the two orders of magnitude enhancement of charge carrier mobility in phenanthrene based fused aromatic thienopyrazine polymers . Hole carrier mobility up to 0.012 cm2/Vs can be obtained in thin film transistor devices. Polymers were also utilized to fabricate bulk heterojunction photovoltaic devices and the maximum PCE obtained in these OPV’s was 1.15%. Most importantly, performances of the devices were correlated with thin morphological analysis performed by atomic force microscopy and grazing incidence X-ray scattering .