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Large Modulation of Charge Transport Anisotropy by Controlling the Alignment of π–π Stacks in Diketopyrrolopyrrole‐Based Polymers
Author(s) -
Wei Shuanghua,
Zhang Yuyue,
Liu Jie,
Li Xiaohui,
Wu Yangjiang,
Wei Hong,
Weng Yuyan,
Gao Xu,
Li Yuning,
Wang SuiDong,
Hu Zhijun
Publication year - 2015
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201500153
Subject(s) - materials science , lithography , anisotropy , transistor , polymer , nanocrystalline material , homogeneous , modulation (music) , charge (physics) , nanotechnology , optoelectronics , electrical engineering , optics , physics , particle physics , composite material , voltage , acoustics , thermodynamics , engineering
Solvent‐assistant room‐temperature nanoimprinting lithography is used to fabricate field effect transistors composed of nanostrip arrays as active channels. The nanostrips comprise highly ordered nanocrystalline diketopyrrolopyrrole–polymer lamellae, in which the b ‐axis is aligned essentially parallel to the long axis of nanostrips. The charge mobility is increased by a factor of 20, compared to those of homogeneous thin films.