PME SPECIAL SEMINAR: Unconventional semiconductors and processes for opto-electronics

In this presentation we report the development of novel materials, as well as thin-film processing and morphology engineering, for flexible and stretchable organic and inorganic thin-film transistors, electrolyte gated transistors electrochemical transistors and circuits. On material development, we report on “soft” organic (macro)molecules by incorporating π-deconjugated building blocks or properly designed additives. Furthermore, we also developed stretchable inorganic metal oxide fiber network by spry coating metal salts+thermally labile polymer formulations. New transistor architectures using semiconductor film porosity as the key element for enhancing mechanical flexibility and tune charge transport are also demonstrated. These films, combined with elastomeric pre-stretching, enables unprecedentedly stable current-output characteristic upon mechanical deformation, which are used for sensing analytes, strain, light, temperature, and physiological parameters. Finally, we report our recent work on molecular n-doping of organic semiconductors using a novel strategy involving catalysts.<br /><br />

Host: Prof. Sihong Wang

<a href="https://uchicago.zoom.us/j/97621480521?pwd=VkNMZjhKaHNQa3JFOTNIdnJ6WlEy… Link</a>