Premium
Gas Sensors: Enhanced Gas Sensing Performance of Organic Field‐Effect Transistors by Modulating the Dimensions of Triethylsilylethynyl‐Anthradithiophene Microcrystal Arrays (Adv. Mater. Interfaces 4/2020)
Author(s) -
Kwak Do Hun,
Seo Yena,
Anthony John E.,
Kim Seunghyun,
Hur Jiyeon,
Chae Huijeong,
Park Hui Joon,
Kim BongGi,
Lee Eunho,
Ko Sunglim,
Lee Wi Hyoung
Publication year - 2020
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.202070019
Subject(s) - polydimethylsiloxane , materials science , crystallization , dielectric , optoelectronics , semiconductor , organic semiconductor , field effect transistor , crystal (programming language) , nanotechnology , transistor , chemical engineering , voltage , electrical engineering , computer science , engineering , programming language
In article number 1901696, Wi Hyoung Lee and co‐workers report a method to increase sensitivity of the 5,11‐bis(triethylsilylethynyl)‐anthradithiophene (TES‐ADT) gas sensors by adopting TES‐ADT crystal arrays of various shapes and dimensions. The patterning and crystallization of spin‐cast TES‐ADT films are simultaneously achieved by the use of a solvent‐containing engraved polydimethylsiloxane mold. The increased sensing performance in patterned TES‐ADT film is mainly due to the increased area of crystal edges, which provides a diffusion pathway for gas molecules to arrive at the semiconductor‐dielectric interface.