Optical properties of translucent CaGa2S4:Ce films prepared by pulsed laser deposition |
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| Authors: | Tsubasa IsizakiKunihiko Tanaka Hisao Uchiki |
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| Affiliation: | Department of Electrical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan |
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| Abstract: | Translucent CaGa2S4:Ce thin films were prepared by pulsed laser deposition. Optical absorption associated with the 4f1 (2F5/2) to 5d2 second-highest excited state transition of the Ce3+ ion was clearly observed at 3.60 eV as well as the 4f1 (2F5/2) to 5d1 lowest excited state transition at 2.93 eV. Energy splitting of the 5d state by the crystal field is discussed in terms of a model of a square antiprism structure with D4d symmetry. |
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| Keywords: | 4f-5d spectra Cerium Calcium gallium sulfide Thin film Pulsed laser deposition |
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