Phys. Rev. Lett. 95, 206802 (2005) [4 pages]Current-Induced Light Emission and Light-Induced Current in Molecular-Tunneling JunctionsReceived 7 March 2005; published 8 November 2005 The interaction of metal-molecule-metal junctions with light is considered within a simple generic model. We show, for the first time, that light-induced current in unbiased junctions can take place when the bridging molecule is characterized by a strong charge-transfer transition. The same model shows current-induced light emission under potential bias that exceeds the molecular excitation energy. Results based on realistic estimates of molecule-lead coupling and molecule-radiation field interaction suggest that both effects should be observable. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.206802
DOI:
10.1103/PhysRevLett.95.206802
PACS:
73.23.−b, 78.20.Jq, 78.60.Fi, 78.67.−n
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