Photostimulated luminescence of silver clusters in zeolite-Y |
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| Affiliation: | 1. Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China;2. Department of Chemistry, Peking University, Beijing 100871, China;1. Institute of Solid State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Russia;2. Institute of Microelectronics Technology and High Purity Materials, Russian Academy of Sciences, 142432 Chernogolovka, Russia;3. Physics Department, City College of City University of New York, NY 10031, USA |
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| Abstract: | Upon UV-irradiation at 254 nm, the photoluminescence of silver atoms in zeolite-Y decreases, meanwhile an absorption band shows up around 840 nm. By photostimulation at 840 nm, fluorescence of silver atoms is detected, which is called photostimulated luminescence, and the photoluminescence of silver atoms is increased slightly. These phenomena are attributed to the charge-transfer interaction between the zeolite framework and the entrapped silver atoms. |
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