Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 139, Issue 28, Pages 9443-9446Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.7b04491
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Funding
- ERC
- EC
- Marie-Curie ITN project iSwitch [642196]
- MoQuaS (Molecular Quantum Spintronics) [FP7-ICT-2013-10 610449]
- European Union [EU CIG 334324 LIGHTER]
- DFG
- Max Planck Society
- MaxNet Energy
- Graduate School of Excellence Materials Science in Mainz (MAINZ) [GSC 266]
- Center for INnovative and Emerging MAterials (CINEMA)
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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 micro device 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.
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