A bis(2-oxoindolin-3-ylidene)-benzodifuran-dione containing copolymer for high-mobility ambipolar transistors

• DOI: 10.1039/c3cc48695h
• Publication Date: 2014-01-23T11:01:22Z
• Authors: Guobing Zhang; Peng Li; Longxiang Tang; Jingxuan Ma; Xianghua Wang; Hongbo Lu; Boseok Kang; Kilwon Cho; Longzhen Qiu
• Keywords: DIKETOPYRROLOPYRROLE; 02 engineering and technology; PERFORMANCE N-TYPE; SEMICONDUCTORS; TRANSPORT; INVERTERS; DONOR-ACCEPTOR POLYMER; CHARGE-TRANSPORT; THIN-FILM TRANSISTORS; ELECTRON; FIELD-EFFECT TRANSISTORS; 0210 nano-technology

A bis(2-oxoindolin-3-ylidene)-benzodifuran-dione (BIBDF)-based low band gap polymer (PBIBDF-BT), containing a solubilizing alkyl chain bithiophene unit as a donor, has been synthesized. The polymer with a low-lying LUMO/HOMO energy level (-4.03/-5.55 eV) exhibits efficient ambipolar charge transport. The electron and hole mobilities are as high as 1.08 and 0.30 cm(2) V(-1) s(-1), respectively.