Luminescence from Nd3+-doped GeO2/Ormosil Organic-inorganic Hybrid Transparent Dried Gels

摘要：

Nd3+-doped GeO2/ormosil transparent dried gel with the molar composition of 30GeO2-70orraosil-0.5Nd2O3 was prepared by a sol-gel process from an organic-inorganic hybrid system at a low temperature of 100℃. Acid-catalyzed solutions of γ-glycidoxypropyltriroethoxysilane mixed with gemanium isopropoxide were used as matrix precursors. In this organic-inorganic hybrid transparent dried gel, a relative strong room-temperature photoluminescence emission at 1 062 nm corresponding to the 4F3/2→4I11/2 transition of neodymium ion was measured. An intense room temperature yellow to violet upconversion emission at 398 nm was observed under a xenon lamp excitation with a yellow light at the wavelength of 580 nm, in addition to this intense violet emission, an ultraviolet emission at 345 nm and a blue emission at 470 nm were also observed. The emission mechanism is proposed, and it indicates that excited-state absorption process originating from the long-lived 4F3/2 excited state should be responsible for upconversion process.

关键词： Sol-gel Technique Dried-gel Up-conversion Photoluminescence

作者: Wenxiu Que Z. Sun L. L. Wang T. Chen Q. Y. Zhang

作者单位: Electronic Materials Research Laboratory, Xian Jiaotong University, Xian 710049, China Department of Physics, East China Normal University, 3663 Northern Zhongshan Road, Shanghai 200062, Institute of Optical Communications Materials, South China University of Technology, Guangzhou 51064

会议类型: 国际会议

会议名称: 2007亚洲显示国际会议（AD07）

会议地点: 上海

会议语种:英文

页码: 1027-1031

在线出版日期: 2007-03-12（万方平台首次上网日期，不代表论文的发表时间）