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Extremely slow photocurrent response from hemoprotein films in planar diode geometry

Lookup NU author(s): Professor Patrick DegenaarORCiD

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Abstract

The photocurrent response in solid-state films of two different hemoproteins, horseradish peroxidaseand cytochrome c, was studied by employing a geometry of planar diode device. The highest occupiedmolecular orbital energy of the two solid-state hemoproteins was measured using photoelectron yieldspectroscopy. Results showed that the photocurrent response of hemoprotein films under white lightillumination was found extremely slow (ca. 160–480 s) owing to the charge blocking by insulatingsurrounding parts of which size resulted in largely different photocurrent time scale between the twohemoprotein films.

Publication metadata

Author(s): Nam S, Kim H, Degenaar P, Ha CS, Kim Y

Publication type: Article

Publication status: Published

Journal: Applied Physics Letters

Year: 2012

Volume: 101

Print publication date: 26/11/2012

ISSN (print): 0003-6951

ISSN (electronic): 1077-3118

Publisher: American Institute of Physics

URL: http://dx.doi.org/10.1063/1.4764948

DOI: 10.1063/1.4764948

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