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Photoelectric Response of Self Assembled Films of Bacterio-Rhodopsin Purple Membrane Integrated on Silicon

Published online by Cambridge University Press:  15 February 2011

D. Ricceri ,
G. Scicolone ,
O. Di Marco ,
S. Conoci ,
B. Pignataro  and
S. Coffa
D. Ricceri
Affiliation:
Si-optoelectronics&post Silicon Technologies, CORPORATE R&D, ST Microelectronics, Stradale Primosole 50, I-95121 Catania, Italy
G. Scicolone
Affiliation:
Si-optoelectronics&post Silicon Technologies, CORPORATE R&D, ST Microelectronics, Stradale Primosole 50, I-95121 Catania, Italy
O. Di Marco
Affiliation:
Si-optoelectronics&post Silicon Technologies, CORPORATE R&D, ST Microelectronics, Stradale Primosole 50, I-95121 Catania, Italy
S. Conoci
Affiliation:
Si-optoelectronics&post Silicon Technologies, CORPORATE R&D, ST Microelectronics, Stradale Primosole 50, I-95121 Catania, Italy
B. Pignataro
Affiliation:
Dipartimento di Scienze Chimiche, Università di Catania, Viale A. Doria 95125 Catania, Italy
S. Coffa
Affiliation:
Si-optoelectronics&post Silicon Technologies, CORPORATE R&D, ST Microelectronics, Stradale Primosole 50, I-95121 Catania, Italy
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Abstract

Bacterio-rhodopsin purple membrane (PM) thin films have been prepared by selfassembling (SA) technique. Morphological properties of the layers were inspected by Scanning Electron Microscopy (SEM) and Scanning Force Microscopy (SFM) highlighting the presence of densely packed PM films. Reflectance Uv-vis spectra on these films revealed the typical bR absorption at 570 nm. By using a tungsten lamp illuminations (250-350 mW) chopped at 0.5Hz, photoelectric responses were detected. Differential (light-on and light-off) photocurrent signals of up to 1 μA/cm2 were obtained upon light exposure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 774: Symposium O – Materials Inspired by Biology , 2003 , O5.4
Copyright
Copyright © Materials Research Society 2003

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