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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Ca10Li(PO4)7:Dy3+,Ce3+材料的制备及发光性能 会议论文 中国物理学会;中国稀土学会 作者:  杨志平[1];  赵引红[2];  刘鹏飞[3];  吕梁[4];  梁晓双[5] 收藏  |  浏览/下载：3/0  |  提交时间：2019/12/21 Ca10Li(PO4)7:Dy3+  Ce3+ 发光 能量传递 浓度猝灭   Energy transfer in Y3Al5O12:Ce 3, Pr3+ and CaMoO4:Sm3, Eu 3 phosphors (EI CONFERENCE) 会议论文 Zhang J.; Wang L.; Jin Y.; Zhang X.; Hao Z.; Wang X.-J. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 Non-radiative energy transfers (ET) from Ce3 to Pr3+ in Y3Al5O12:Ce3  Pr3+ and from Sm3 to Eu3 in CaMoO4:Sm3  Eu3 are studied based on photoluminescence spectroscopy and fluorescence decay patterns. The result indicates an electric dipoledipole interaction that governs ET in the LED phosphors. For Ce3 concentration of 0.01 in YAG:Ce3  Pr3+  the rate constant and critical distance are evaluated to be 4.510-36 cm 6 s-1 and 0.81 nm  respectively. An increase in the red emission line of Pr3+ relative to the yellow emission band of Ce 3  on increasing Ce3 concentration is observed. This behavior is attributed to the increase of spectral overlap integrals between Ce3 emission and Pr3+ excitation due to the fact that the yellow band shifts to the red spectral side with increasing Ce3 concentration. In CaMoO4:Sm3  Eu3  Sm 3Eu3 transfer occurs from 4G5/2 of Sm3 to 5D0 of Eu3. The rate constant of 8.510-40 cm6 s-1 and the critical transfer distance of 0.89 nm are evaluated. 2010 Elsevier B.V. All rights reserved.   Effect of La/sub 2/O/sub 3/ and CeO/sub 2/ on Nb/sub 2/O/sub 5/ doped TiO/sub 2/ ceramic varistors 会议论文 Key Engineering Materials, 3rd International Conference on High-Performance Ceramics (CICC-3), Shenzhen, China, INSPEC Jia Mi; Zilong Tang; Shaohua Luo; Zhongtai Zhang 收藏  |  浏览/下载：4/0 Synthesis and photoluminescence of Eu/sup 3+/ doped Sr/sub 2 /CeO/sub 4/ via carbonate precursor 会议论文 Materials Science Forum, Fifth Pacific Rim International Conference on Advanced Materials and Processing PRICM-5, Beijing, China, INSPEC Shikao Shi; Junmin Li; Ji Zhou 收藏  |  浏览/下载：3/0