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Published on: November 7, 2025
Exciton-stimulated molecular transformation in organic light-emitting diodes
Yi-Lu Chang1, Ying-Li Rao, Shaolong Gong
1Department of Materials Science and Engineering, University of Toronto, 184 College St., Toronto Ontario, M5S 3E4, Canada.
Abstract:
An exciton-stimulated molecular transformation in an organic light-emitting diode (OLED) on a time scale of a few seconds under electrical bias is shown to reach nearly 100% under standard operating conditions, leading to color switching. It is reversible in both a thin film and an OLED when sufficient thermal energy is supplied. Such an exciton-stimulated molecular transformation suggests a new process which may be exploited for applications such as electrochromic and memory devices.
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