Current-induced light emission and light-induced current in molecular-tunneling junctions.
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.
Galperin
Michael
M
School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel.
Nitzan
Abraham
A