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Proceedings Paper

Precipitation of carbon in zeolites using photochemical reaction excited by an ArF excimer laser
Author(s): Yuka Yamada; Shigeru Takeyama; Takaaki Orii; Takehito Yoshida
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Paper Abstract

A photochemical reaction method in a liquid phase using an argon-fluoride (ArF) excimer laser has been developed to precipitate carbon with nanometer-sized structures in zeolites. This method has the advantages of low-damage and simple process compared with conventional gas phase reaction process. Carbon precipitated in zeolites using this method has shown a broad absorption band located at 3.0 eV which is lower photon energy than that of benzene, Furthermore, a visible photoluminescence (PL) band with a peak around 2.0 eV has been observed at room temperature. These results indicate that benzene ring has been decomposed by the ArF excimer laser and nanometer-sized carbon comparable to fullerene molecules has been precipitated in/on the zeolites.

Paper Details

Date Published: 15 August 1998
PDF: 6 pages
Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317940
Show Author Affiliations
Yuka Yamada, Matsushita Research Institute Tokyo, Inc. (Japan)
Shigeru Takeyama, Matsushita Research Institute Tokyo, Inc. (Japan)
Takaaki Orii, Univ. of Tsukuba (Japan)
Takehito Yoshida, Matsushita Research Institute Tokyo, Inc. (Japan)


Published in SPIE Proceedings Vol. 3550:
Laser Processing of Materials and Industrial Applications II
ShuShen Deng; S. C. Wang, Editor(s)

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