Journal
NATURE COMMUNICATIONS
Volume 4, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms2937
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Funding
- Creative Research Initiatives (project title: Smart Molecular Memory) of MEST/NRF
- National Research Foundation of Korea [2006-0050684] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A molecular ultra-thin film (for example, a molecular monolayer) with graphene electrodes would allow for the realization of superior stable, transparent and flexible electronics. A realistic prospect regarding the use of graphene in two-terminal molecular electronic devices is to fabricate a chemically stable, optically transparent, mechanically flexible and molecularly compatible junction. Here we report on a novel photo-switchable molecular monolayer, one side chemically and the other side physically anchored between the two graphene electrodes. The photo-switchable organic molecules specified with an electrophilic group are chemically self-assembled into a monolayer on the graphene bottom electrode, while the other end is physically contacted to the graphene top electrode; this arrangement provides excellent stability for a highly transparent and flexible molecular monolayer device with a high device yield due to soft contacts at the top electrode interface. Thus, the transparent graphene electrodes allow stable molecular photo-switching due to photoinduced changes in the molecular conformational length.
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