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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 发表日期：2012     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 Influence of high temperature annealing in nitrogen on upconversion luminescence of -NaYF4: Yb3+, Er3+ hexagonal sub-microplates (EI CONFERENCE) 会议论文 2012 International conference on Function Materials and Nanotechnology, FMN 2012, May 19, 2012 - May 20, 2012, Zhengzhou, China Zhao J.; Jia T.; Kong X. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/25 The pure -NaYF4: Yb3+  Er3+ hexagonal sub-microplates were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. The size of them is about 600 nm 400 nm (side length thickness). The obtained sample was divided into two parts and one of them was annealed in nitrogen at 300 C for 2 hours. The crystal structure of the -NaYF4: Yb3+  Er3+ hexagonal sub-microplates before and after annealing treatment is hexagonal phase. Under the excitation of 980 nm diode laser  the upconversion luminescence intensity the sample after annealing is much stronger than that of the sample without annealing treatment. High temperature annealing process improved the crystallization of the sample  resulting in the decrease of the nonradiative relaxation and the enhancement of the upconversion luminescence. (2012) Trans Tech Publications  Switzerland.   La(OH)(3):Ln(3+) and La2O3:Ln(3+) (Ln = Yb/Er, Yb/Tm, Yb/Ho) Microrods: Synthesis and Up-conversion Luminescence Properties 期刊论文 crystal growth & design, 2012, 卷号: 12, 期号: 1, 页码: 306-312 Zhang X; Yang PAP; Wang D; Xu J; Li CX; Gai SL; Lin J 收藏  |  浏览/下载：11/0  |  提交时间：2013/09/03 ONE-DIMENSIONAL NANOSTRUCTURES  SINGLE-CRYSTAL NANOWIRES  HYDROTHERMAL SYNTHESIS  SURFACE FUNCTIONALIZATION  SEMICONDUCTING OXIDES  CARBON NANOTUBES  IN-VIVO  980 NM  RED  NANOCRYSTALS   Multiform La2O3: Yb3+/Er3+/Tm3+ submicro-/microcrystals derived by hydrothermal process: Morphology control and tunable upconversion luminescence properties 期刊论文 crystengcomm, 2012, 卷号: 14, 期号: 6, 页码: 2100-2111 Li GG; Shang MM; Geng DL; Yang DM; Peng C; Cheng ZY; Lin J 收藏  |  浏览/下载：20/0  |  提交时间：2013/06/30 ONE-DIMENSIONAL NANOSTRUCTURES  CHEMICAL-VAPOR-DEPOSITION  LIGHT-EMITTING-DIODES  WHITE-LIGHT  MAGNETIC-PROPERTIES  YB3+ CONCENTRATION  GROWTH-MECHANISM  PHOSPHOR FILMS  FULL-COLOR  980 NM