Water effect on primary photocarrier generation process in Y-form titanyl phthalocyanine

Shoichi Yamaguchi; Yutaka Sasaki

doi:10.1117/12.404800

19 October 2000 Water effect on primary photocarrier generation process in Y-form titanyl phthalocyanine

Shoichi Yamaguchi, Yutaka Sasaki

Proceedings Volume 4110, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VI; (2000) https://doi.org/10.1117/12.404800
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

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.

Citation Download Citation

Shoichi Yamaguchi and Yutaka Sasaki "Water effect on primary photocarrier generation process in Y-form titanyl phthalocyanine", Proc. SPIE 4110, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VI, (19 October 2000); https://doi.org/10.1117/12.404800

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