Title :
Effect of rutile-type content on optical absorption and photoelectrochemical properties of nanostructured anatase-type TiO2 electrodes sensitized with CdSe quantum dots
Author :
Otsuka, H. ; Shen, Q. ; Toyoda, T.
Author_Institution :
Dept. of Appl. Phys. & Chem., Univ. of Electro-Commun., Tokyo, Japan
Abstract :
In this study, two types of nanostructured TiO2 electrodes were prepared without rutile-type (100% anatase-type) and with rutile-type (12%) content. CdSe quantum dots (QDs) were adsorbed onto each of the two types of TiO2 electrodes as photosensitizer using a chemical deposition technique. Optical absorption and photoelectrochemical properties were characterized with photoacoustic (PA) and incident photon to current conversion efficiency (IPCE) methods, respectively. Results suggest that the rutile-type content is advantageous to increase the optical absorption and the photoelectrochemical properties of TiO2 electrodes.
Keywords :
II-VI semiconductors; adsorption; cadmium compounds; nanostructured materials; photoacoustic spectra; photoelectrochemistry; semiconductor quantum dots; titanium compounds; TiO2-CdSe; anatase-type electrodes; chemical deposition; nanostructured electrode; optical absorption; photoacoustic technique; photoelectrochemical properties; photosensitizer; quantum dots; rutile-type content; Chemical technology; Chemistry; Educational technology; Electrodes; Electromagnetic wave absorption; Optical sensors; Photonics; Physics; Quantum dots; US Department of Transportation;
Conference_Titel :
Microprocesses and Nanotechnology Conference, 2005 International
Print_ISBN :
4-9902472-2-1
DOI :
10.1109/IMNC.2005.203798
