Photoswitchable Micro-Supercapacitor Based on a Diarylethene-Graphene Composite Film

• DOI: 10.1021/jacs.7b04491
• Publication Date: 2017-06-26T17:28:25Z
• Authors: Zhaoyang Liu; Hai I. Wang; Akimitsu Narita; Qiang Chen; Zoltan Mics; Dmitry Turchinovich; Mathias Kläui; Mischa Bonn; Klaus Müllen
• Keywords: Diarylethene; Molecular switch

Stimuli-responsive micro-supercapacitors (MSCs) controlled by external stimuli can enable a wide range of applications for future on-chip energy storage. Here, we report on photoswitchable MSC based diarylethene-graphene composite film. The microdevice delivers an outstanding and reversible capacitance modulation up to 20%, demonstrating prototype MSC. Terahertz spectroscopy indicates that the photoswitching is enabled tuning interfacial charge injection into diarylethene molecular orbitals, as consequence transfer at interface upon light modulation.