Fabrication of Bacteriorhodopsin (bR) Thin Films by Wire-Bar Coating Technique and Evaluation of Transient Photocurrent Response in Its bR Photocells

Toshiki YAMADA  Yoshihiro HARUYAMA  Katsuyuki KASAI  Takahiro KAJI  Yukihiro TOMINARI  Shukichi TANAKA  Akira OTOMO  

IEICE TRANSACTIONS on Electronics   Vol.E100-C   No.2   pp.133-136
Publication Date: 2017/02/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E100.C.133
Type of Manuscript: BRIEF PAPER
bacteriorhodopsin,  wire-bar coating technique,  dip-coating technique,  transient-photocurrent,  

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We prepared a bR thin film by the wire-bar coating technique, and investigated the transient photo-current characteristics of the bR photocell. The transient photo-current signal of bR photocells prepared by the wire-bar coating technique and the dip coating technique was compared. An almost identical transient photo-current signal intensity was obtained both for the wire-bar coating technique and dip coating technique, while the thickness of bR thin film prepared by the wire-bar coating technique is slightly thinner than that prepared by the dip-coating technique. Transparent conductive oxide dependence of the transient photo-current signal is almost the same dependence for the bR photocells with a bR thin film prepared by both techniques. Application of the wire-bar coating technique is significant from the viewpoints of the bR's sample consumption as well as simplicity of sample preparation.