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Design of a Quinoidal Thieno[3,4‐ b ]thiophene‐Diketopyrrolopyrrole‐Based Small Molecule as n‐Type Semiconductor
Author(s) -
Ren Longbin,
Yuan Dafei,
Zhu Xiaozhang
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201801737
Subject(s) - thiophene , small molecule , electron mobility , thin film transistor , organic semiconductor , semiconductor , transistor , molecule , materials science , polymer , optoelectronics , organic field effect transistor , chemistry , nanotechnology , field effect transistor , organic chemistry , electrical engineering , biochemistry , engineering , layer (electronics) , voltage
A quinoidal small‐molecule semiconductor QDPPBTT was synthesized. Organic thin‐film transistor (OTFT) devices based on QDPPBTT showed an electron mobility as high as 0.13 cm 2 V −1 s −1 and I on / I off ratio of 10 6 under ambient conditions. We suggested that 2D extended π‐conjugation and quinoid‐enhancing effect had an important role in electron mobility and stability of n‐type FET devices, which might be a good strategy in designing new material systems.