Upconversion Emission of Infrared Excited Er3+-Doped Transparent Glass Ceramics Containing CaF2 Nano-Crystals

2007 ◽  
Vol 336-338 ◽  
pp. 1846-1848
Author(s):  
Da Qin Chen ◽  
Yuan Sheng Wang ◽  
Yun Long Yu
Keyword(s):  
Heating Temperature ◽  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Upconversion Emission ◽  
Photon Absorption ◽  
Glassy Matrix ◽  
Homogeneous Distribution ◽  
Transparent Glass ◽  
Quenching Effect ◽  
Transition Mechanism

Upconversion luminescence of Er3+-doped SiO2-Al2O3-CaO-NaF-CaF2 transparent glass ceramics under 980 nm excitation was investigated. XRD and TEM experiments revealed the homogeneous distribution of CaF2 nano-crystals among the glassy matrix. Intense red upconversion signal was recorded and its intensity increased with the increasing of heating temperature and Er3+-doping level at the range of 0.1 to 1.0 mol%. When Er3+ doping reached 2 mol%, the concentration quenching effect appeared. All these results could be due to the incorporation of Er3+ ions into precipitated CaF2 nano-crystals. The quadratic pump power dependence of the upconversion luminescence intensity indicated that the transition mechanism of the red emission was due to two-photon absorption processes.

scholarly journals Nano-Crystallization of Ln-Fluoride Crystals in Glass-Ceramics via Inducing of Yb3+ for Efficient Near-Infrared Upconversion Luminescence of Tm3+

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1033
Author(s):  
Jianfeng Li ◽  
Yi Long ◽  
Qichao Zhao ◽  
Shupei Zheng ◽  
Zaijin Fang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Upconversion Emission ◽  
Ceramic Composites ◽  
Wide Range ◽  
Transmission Window ◽  
Optical Applications ◽  
Upconversion Emissions

Transparent glass-ceramic composites embedded with Ln-fluoride nanocrystals are prepared in this work to enhance the upconversion luminescence of Tm3+. The crystalline phases, microstructures, and photoluminescence properties of samples are carefully investigated. KYb3F10 nanocrystals are proved to controllably precipitate in the glass-ceramics via the inducing of Yb3+ when the doping concentration varies from 0.5 to 1.5 mol%. Pure near-infrared upconversion emissions are observed and the emission intensities are enhanced in the glass-ceramics as compared to in the precursor glass due to the incorporation of Tm3+ into the KYb3F10 crystal structures via substitutions for Yb3+. Furthermore, KYb2F7 crystals are also nano-crystallized in the glass-ceramics when the Yb3+ concentration exceeds 2.0 mol%. The upconversion emission intensity of Tm3+ is further enhanced by seven times as Tm3+ enters the lattice sites of pure KYb2F7 nanocrystals. The designed glass ceramics provide efficient gain materials for optical applications in the biological transmission window. Moreover, the controllable nano-crystallization strategy induced by Yb3+ opens a new way for engineering a wide range of functional nanomaterials with effective incorporation of Ln3+ ions into fluoride crystal structures.

Structure and upconversion luminescence of transparent glass-ceramics containing (Er,Yb)2(Ti,Zr)2O7 nanocrystals

2015 ◽  
Vol 409 ◽  
pp. 54-62 ◽  
Author(s):  
O.S. Dymshits ◽  
P.A. Loiko ◽  
N.A. Skoptsov ◽  
A.M. Malyarevich ◽  
K.V. Yumashev ◽  
...  
Keyword(s):  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Transparent Glass

Tunable Red-Green Upconversion Luminescence in Novel Transparent Glass Ceramics Containing Er:  NaYF4Nanocrystals

2006 ◽  
Vol 110 (42) ◽  
pp. 20843-20846 ◽  
Author(s):  
Feng Liu ◽  
En Ma ◽  
Daqin Chen ◽  
Yunlong Yu ◽  
Yuansheng Wang
Keyword(s):  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Transparent Glass

Effect of Mn2+ ions on the enhancement upconversion emission and energy transfer of Mn2+/Tb3+/Yb3+ tri-doped transparent glass-ceramics

2015 ◽  
Vol 150 ◽  
pp. 76-80 ◽  
Author(s):  
Ho Kim Dan ◽  
Dacheng Zhou ◽  
Rongfei Wang ◽  
Qing Jiao ◽  
Zhengwen Yang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Glass Ceramics ◽  
Upconversion Emission ◽  
Transparent Glass

Yb3+/Ln3+/Cr3+ (Ln = Er, Ho) doped transparent glass ceramics: crystallization, Ln3+ sensitized Cr3+ upconversion emission and multi-modal temperature sensing

2017 ◽  
Vol 5 (45) ◽  
pp. 11769-11780 ◽  
Author(s):  
Daqin Chen ◽  
Shen Liu ◽  
Wei Xu ◽  
Xinyue Li
Keyword(s):  
Glass Ceramics ◽  
Upconversion Emission ◽  
Temperature Sensing ◽  
Transparent Glass ◽  
Optical Thermometry ◽  
Promising Application

Ln3+ sensitized Cr3+ upconversion emission is realized in LiGa5O8 embedded glass ceramics, enabling its promising application in multi-modal optical thermometry.

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