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Proceedings Paper

Water effect on primary photocarrier generation process in Y-form titanyl phthalocyanine
Author(s): Shoichi Yamaguchi; Yutaka Sasaki
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Paper Abstract

We have studied the effect of adsorbed water on the primary photocarrier-generation process in Y-form titanyl phthalocyanine (Y-TiOPc) by using ground-state absorption and time-resolved fluorescence spectroscopy. The water adsorption is the unique feature of Y-TiOPc , that is not observed in the other polymorphs of TiOPc. We report for the first time the water-induced change of the absorption spectrum, that is, the hydrochromism of Y-TiOPc. The fluorescence lifetimes and amplitudes of Y-TiOPc are greatly influenced by adsorbed water. We have found that the mechanism of the fluorescence quenching of Y-TiOPc caused by water adsorption is the same as that by an electric field. Adsorbed water enhances the photocarried generation of Y- TiOPc in the same way as an electric field does in the picosecond time regime.

Paper Details

Date Published: 19 October 2000
PDF: 8 pages
Proc. SPIE 4110, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VI, (19 October 2000); doi: 10.1117/12.404800
Show Author Affiliations
Shoichi Yamaguchi, Ctr. for Analytical Chemistry and Science, Inc. (Japan)
Yutaka Sasaki, Ctr. for Analytical Chemistry and Science, Inc. (Japan)


Published in SPIE Proceedings Vol. 4110:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VI
Shizhuo Yin; Francis T. S. Yu, Editor(s)

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