6533b7ddfe1ef96bd1274acf

RESEARCH PRODUCT

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

Mischa BonnMathias KläuiQiang ChenZhaoyang LiuAkimitsu NaritaKlaus MüllenZoltan MicsDmitry TurchinovichHai I. Wang

subject

Nanotechnology02 engineering and technology010402 general chemistry01 natural sciencesBiochemistryCapacitanceCatalysisEnergy storagelaw.inventionchemistry.chemical_compoundColloid and Surface ChemistryDiarylethenelawMolecular orbitalSupercapacitorGraphenebusiness.industryGeneral ChemistryPhysik (inkl. Astronomie)021001 nanoscience & nanotechnology0104 chemical sciencesTerahertz spectroscopy and technologychemistryModulationOptoelectronics0210 nano-technologybusiness

description

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 a photoswitchable MSC based on a diarylethene-graphene composite film. The microdevice delivers an outstanding and reversible capacitance modulation of up to 20%, demonstrating a prototype photoswitchable MSC. Terahertz spectroscopy indicates that the photoswitching of the capacitance is enabled by the reversible tuning of interfacial charge injection into diarylethene molecular orbitals, as a consequence of charge transfer at the diarylethene-graphene interface upon light modulation.

yearjournalcountryeditionlanguage
2017-01-01Journal of the American Chemical Society
https://doi.org/10.1021/jacs.7b04491