Photoactive Gate Dielectrics (pages 3282–3287)
Qian Shen, Linjun Wang, Song Liu, Yang Cao, Lin Gan, Xuefeng Guo, Michael L. Steigerwald, Zhigang Shuai, Zhongfan Liu and Colin Nuckolls
Article first published online: 15 JUN 2010 | DOI: 10.1002/adma.201000471
Ageneral methodology towards stable high-performance photocontrollable organic thin-film transistors (OTFTs) by using photochromic spiropyrans (SP) combined with polymethyl methacrylate (PMMA) as a photoactive gate dielectric is reported. Capacitance and mobility transitions are demonstrated theoretically and experimentally when the SP molecules undergo their documented reversible photoisomerization. This universal strategy of incorporating molecular functionalities into OTFTs offers attractive new prospects for the development of molecular devices with tailored electronic and other properties.