J-aggregation induced low bandgap anthracene-based conjugated molecule for solution-processed solar cells

Abstract

A new anthracene-based X-shaped conjugated molecule, HBTATHT, was synthesized. Thin film transistors based on unannealed HBTATHT showed a carrier mobility of 0.15 cm(2) V-1 s(-1) (I-on/off = 7.9 x 10(6)). Further, a solution processed solar cell made of HBTATHT exhibited promising power conversion efficiencies of 4.84% and 4.70% with PC61BM (1 : 0.8 wt ratio) and PC71BM (1 : 0.6 wt ratio), respectively.