Hubbard Nonequilibrium Green's Function Analysis of Photocurrent in Nitroazobenzene Molecular Junction.
J Phys Chem Lett
; 10(7): 1550-1557, 2019 Apr 04.
Article
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| MEDLINE
| ID: mdl-30879300
ABSTRACT
We present a combined experimental and theoretical study of photoinduced current in molecular junctions consisting of monolayers of nitroazobenzene oligomers chemisorbed on carbon surfaces and illuminated by ultraviolet-visible light through a transparent electrode. Experimentally observed dependence of the photocurrent on light frequency, temperature, and monolayer thickness is analyzed within first-principles simulations employing the Hubbard nonequilibrium Green's function diagrammatic technique. We reproduce qualitatively correct behavior and discuss mechanisms leading to the characteristic behavior of dark and photoinduced currents in response to changes in bias, frequency of radiation, temperature, and thickness of molecular layer.
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MEDLINE
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En
Revista:
J Phys Chem Lett
Año:
2019
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Article
País de afiliación:
Estados Unidos