Photoconductivity and current-voltage characteristics of thin DNA films: Experiments and modeling
Published
Journal Article
We report experimental observations and theoretical modeling of an unusual photoelectric effect in deoxyribonucleic acid (DNA) thin-film devices, under visible and near-infrared illumination. The devices also show diode-type rectifying current-voltage (I-V) characteristics. An equivalent circuit model was constructed that fits the experimental data, and physical processes likely to arise in the devices are discussed. We envisage the formation of a Schottky barrier at the DNA film-metal interface and infer that the photoresponse arises from photoinjection of electrons from the metal into the DNA film. © 2009 SPIE.
Full Text
Duke Authors
Cited Authors
- Venkatramani, R; Zang, DY; Oh, C; Grote, J; Beratan, D
Published Date
- January 1, 2009
Published In
Volume / Issue
- 7403 /
International Standard Serial Number (ISSN)
- 0277-786X
Digital Object Identifier (DOI)
- 10.1117/12.831024
Citation Source
- Scopus