欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
用不同的激发波长532，514．5，476．5nm，研究稀土Pr^3＋掺杂的透明氟氧化物玻璃陶瓷中Pr^3＋在LaF3微晶环境和玻璃环境中的不同的荧光行为。对于微晶中的Pr^3＋离子，当用532nm和514．5nm激发玻璃陶瓷时，观察到从^3P0能级到^3H5也能级的发射，和^1D2能级到基态^3H4能级，^3P0能级到^3H6能级的发射。我们认为微晶中Pr^3＋离子的^3P0能级上的电子布局是依靠电声子耦合．多声子辅助来实现的。为了进行比较，用476．5nm共振激发玻璃及微晶中Pr^3＋离子的^3P0能级，观察到^3P0能级到很多低能级如：^3H5、^3H6、^3F2的跃迁。而当在532nm和514．5nm非选择激发时，只有^3p0能级到^3H5也能级的发射存在。我们认为这是由于不同的激光波长选择激发了不同环境中的pr^3＋离子，532nm和514．5nm激发线选择激发了电声子耦合环境强中pr^3＋离子。不同Pr^3＋离子掺杂摩尔分数分别为0．005％，0．05％，0．5％的发射光谱的研究还表明，这些电声子耦合环境强中的Pr^3＋离子浓度很高，很容易发生浓度猝灭现象。最后，用拉曼光谱研究了这类玻璃陶瓷的结晶性为和振动特性。
英文摘要：
In this paper, we reported the spectroscopic properties of praseodymium ions （Pr^3＋ ） doped transparent oxyfluoride glass ceramic excited with different laser lines, such as 532,514.5 and 476.5 nm. and the spectroscopic features of Pr^3＋ ions in LaF3 nanocrystals （NCs） and in oxide glass were presented. It was found that the population on ^3P0 state of Pr^3＋ ion in NCs and in glass can be achieved by muhi-phonon assistance process when excited by 514. 5 nm laser lines. As a comparison, 476.5 nm laser line which is mainly resonant with the ^3 H4 to ^3 P0 transition of Pr^3＋ ions in NCs is used as the excitation source, transitions from ^3 P0 state to many lower states, such as ^3 H5, ^3 H6, ^3 F2 mani- folds were observed and it showed significant difference from those excited by 532 nm and 514.5 nm laser lines in which only transition from ^3P0 to ^3 H5 exists. We attribute those different spectroscopic features as selectively excita- tion of Pr^3＋ ions in different environments where exist strong/weak electron-phonon coupling in the ^3 P0.1, states of Pr^3＋ ion in NCs and in glass. Crystallization behavior and vibrational properties of transparent glass ceramic were also studied by Raman spectroscopy excited by 532 nm and 514.5 nm laser lines.
同期刊论文项目
同项目期刊论文
Analysis on fluorescence intensity reverse photonic phenomenon between red and green fluorescence of
Multiphoton ultraviolet and visible upconversion luminescence of Tm3+Yb3+ co-doped oxyfluoride glass
Experimental study on a nonlinear photonics process of Er(0.5)Yb(3): FOV oxyfluoride nanophase vitro
Study on strong cooperative upconversion luminescence of ytterbium-ytterbium clusters in oxyfluoride
Ultraviolet and visible upconversion luminescence of Tm(0.1)Yb(5):FOV oxyfluoride nanophase vitrocer
Three-photon infrared quantum cutting from single species of rare-earth Er3+ ions in Er0.3Gd0.7VO4 c
Calculating line intensities of S-1(0) emission through standard and modified Judd-Ofelt theories in
Long-Lasting Phosphorescence in BaSi2O2N2:Eu2+ and Ba2SiO4:Eu2+ Phases for X-Ray and Cathode Ray Tub
Long lasting yellow phosphorescence and photostimulated luminescence in Sr3SiO5 : Eu2+ and Sr3SiO5 :
Near-Infrared to Visible Upconversion in Er3+ and Yb3+ Codoped Lu2O3 Nanocrystals: Enhanced Red Colo
Direct calculation of 4f(3)-4f(3) transition intensities in Nd3+-doped YPO4 system involving explici
Spectral Probing of Surface Luminescence of Cubic Lu2O3:Eu3+ Nanocrystals Synthesized by Hydrotherma
Luminescent Properties in Relation to Controllable Phase and Morphology of LuBO3:Eu3+ Nano/Microcrys
Large-scale fabrication of Pr3+ doped or undoped nanosized ATiO(3) (A = Ca, Sr, Ba) with different s
Red photoluminescence due to energy transfer from Eu2+ to Cr3+ in Sr3Al10SiO20-SrAl12O19 mixed phase
Fabrication of Eu3+ and SM3+ codoped micro/nanosized MMoO4 (M = Ca, Ba, and Sr) via facile hydrother
Intense violet-blue emitting (CaCl2/SiO2) : Eu2+ phosphor powders for applications in UV-LED based p
Phase dependent photoluminescence and energy transfer in Ca2P2O7 : Eu2+, Mn2+ phosphors for white LE
Hydrothermal synthesis and luminescent properties of microtubes constructed by fluffy Zns : Mn2+ wit
Optical properties of trivalent europium doped ZnO : Zn phosphor under indirect excitation of near-U
Spectroscopic investigation of CaAl12O19: M3+ upon UV/vacuum-UV excitation: a comparison with SrAl12
Calculating line intensities of S-1(0) emission with 4f5d components in Pr3+-doped through mixing Sr
期刊信息
位置：