Premium
Single Crystal Microwires of p ‐DTS(FBTTh 2 ) 2 and Their Use in the Fabrication of Field‐Effect Transistors and Photodetectors
Author(s) -
Cui Qiuhong,
Hu Yuanyuan,
Zhou Cheng,
Teng Feng,
Huang Jianfei,
Zhugayevych Andriy,
Tretiak Sergei,
Nguyen ThucQuyen,
Bazan Guillermo C.
Publication year - 2018
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201702073
Subject(s) - materials science , intermolecular force , fabrication , organic semiconductor , transistor , photodetector , semiconductor , field effect transistor , single crystal , crystal (programming language) , optoelectronics , lattice (music) , nanotechnology , condensed matter physics , chemical physics , crystallography , voltage , molecule , physics , medicine , chemistry , alternative medicine , pathology , quantum mechanics , computer science , acoustics , programming language
Single crystal microwires of a well‐studied organic semiconductor used in organic solar cells, namely p ‐DTS(FBTTh 2 ) 2 , are prepared via a self‐assembly method in solution. The high level of intermolecular organization in the single crystals facilitates migration of charges, relative to solution‐processed films, and provides insight into the intrinsic charge transport properties of p ‐DTS(FBTTh 2 ) 2 . Field‐effect transistors based on the microwires can achieve hole mobilities on the order of ≈1.8 cm 2 V −1 s −1 . Furthermore, these microwires show photoresponsive electrical characteristics and can act as photoswitches, with switch ratios over 1000. These experimental results are interpreted using theoretical simulations using an atomistic density functional theory approach. Based on the lattice organization, intermolecular couplings and reorganization energies are calculated, and hole mobilities for comparison with experimental measurements are further estimated. These results demonstrate a unique example of the optoelectronic applications of p ‐DTS(FBTTh 2 ) 2 microwires.