Photoactive Gate Dielectrics

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. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.