| 光谱学与光谱分析 |
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| Study of Spectral Property of Er3+-Doped TiO2 |
| WANG Wen-hua1, 2, CHENG Jian-bo2*, ZHU Hong-jie2 |
1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
2. Science and Engineering College of Chemistry and Biology, Yantai University, Yantai 264005, China |
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Abstract Spectral property of Er3+-doped TiO2 prepared with gel method using absolute alcohol, glacial acetic acid and tetrabutyl titanate was studied. The Stokes emission spectra at 488 nm and upconversion emission spectra at 980 nm of the material were measured. In the visible range, green and red light was observed with green light corresponding to 2H11/2, 4S3/2→4I15/2 transition of Er3+, and red light corresponding to 4F9/2→4I15/2 transition of Er3+. The green and red light are both two-phonon process from the curve of ln Ivis-ln Iin as the light intensity is directly proportional to the square of pump power. Elementary studies of the upconversion process were conducted.
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Received: 2005-12-19
Accepted: 2006-03-20
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Corresponding Authors:
CHENG Jian-bo
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