Significant enhancement of visible up-conversion emissions of Y2O2S:Er3+ phosphors by Mn2+ sensitizing under 1550 nm excitation

RSC Advances ◽  
2014 ◽  
Vol 4 (32) ◽  
pp. 16710-16715 ◽  
Author(s):  
Shuanglong Yuan ◽  
Huidan Zeng ◽  
Xuanshun Wu ◽  
Zhao Liu ◽  
Jing Ren ◽  
...  
Keyword(s):  
Emission Intensity ◽  
Upconversion Emission ◽  
Significant Enhancement

Significant enhancement of the upconversion emission intensity of Y2O2S:Er3+ was achieved by Mn2+ sensitizing under 1550 nm excitation.

scholarly journals Near-infrared excited luminescence and in vitro imaging of HeLa cells by using Mn2+ enhanced Tb3+ and Yb3+ cooperative upconversion in NaYF4 nanocrystals

2019 ◽  
Vol 1 (9) ◽  
pp. 3463-3473 ◽  
Author(s):  
Katarzyna Prorok ◽  
Michał Olk ◽  
Michał Skowicki ◽  
Agnieszka Kowalczyk ◽  
Agata Kotulska ◽  
...  
Keyword(s):  
Hela Cells ◽  
Emission Intensity ◽  
Near Infrared ◽  
Upconversion Emission ◽  
Significant Enhancement ◽  
New Approach ◽  
Co Doping ◽  
Cooperative Upconversion ◽  
Excited Luminescence

To improve the Tb3+ upconversion emission intensity, a new approach, i.e. Mn2+ co-doping, has been proposed and verified in this work. The significant enhancement of the emission intensity as a result of the introduction of Mn2+ ions was observed.

Highly enhanced upconversion luminescence in lanthanide-doped active-core/luminescent-shell/active-shell nanoarchitectures

2016 ◽  
Vol 4 (13) ◽  
pp. 2432-2437 ◽  
Author(s):  
Mingye Ding ◽  
Daqin Chen ◽  
Danyang Ma ◽  
Jianbin Dai ◽  
Yuting Li ◽  
...  
Keyword(s):  
Emission Intensity ◽  
Upconversion Luminescence ◽  
Synergistic Action ◽  
Significant Enhancement ◽  
Active Core ◽  
Suppression Effects

Through active-core/luminescent-shell/active-shell engineering in lanthanide-doped fluoride nanocrystals, significant enhancement of UC emission intensity has been successfully realized under the synergistic action of double sensitization and suppression effects.

Luminescence Properties of Er3+/Tm3+-Doped Ga2O3-Bi2O3-PbO-GeO2 System Glasses

2011 ◽  
Vol 399-401 ◽  
pp. 982-986
Author(s):  
Jin Liu ◽  
Dong Mei Shi ◽  
Ying Gang Zhao ◽  
Xiao Feng Wang
Keyword(s):  
Emission Intensity ◽  
Near Infrared ◽  
Emission Spectra ◽  
Upconversion Emission ◽  
Infrared Emission ◽  
Optical Devices ◽  
Luminescence Properties ◽  
Red Emission ◽  
Fiber Optical ◽  
Near Infrared Emission

The visible and near infrared emission spectra of Er3+/Tm3+-doped Ga2O3-Bi2O3-PbO-GeO2(GBPG) glasses excited at 808 nm are experimentally investigated. The results reveal that 1.53 µm emission were enhanced with an increase of Er3+concentration. Furthermore, the incorporation of Er3+into Tm3+-doped systems has also resulted in intense 522, 545 and 693nm upconversion emission intensity and an weak 660 nm red emission. The possible mechanism and related discussions on this phenomenon have been presented. The results show that Er3+/Tm3+-codoped GBPG glass may be a promising materials for developing laser and fiber optical devices.

Effects of local symmetry on upconversion emission mechanisms under pulsed excitation

2019 ◽  
Vol 7 (44) ◽  
pp. 13770-13777 ◽  
Author(s):  
Daniel Avram ◽  
Claudiu Colbea ◽  
Carmen Tiseanu
Keyword(s):  
Emission Intensity ◽  
Local Symmetry ◽  
Upconversion Emission ◽  
Pulsed Excitation

Under pulsed excitation, the upconversion emission intensity is comparable/110 times greater in higher compared to in lower local symmetry, in contrast to cw excited upconversion.

Enhanced upconversion emission in ZrO2–Al2O3 composite oxide

2016 ◽  
Vol 45 (15) ◽  
pp. 6627-6633 ◽  
Author(s):  
Yan Cong ◽  
Bin Dong ◽  
Naisen Yu ◽  
Yangyang He ◽  
Ying Zhao ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Upconversion Emission ◽  
Significant Enhancement ◽  
Composite Oxide ◽  
Al2o3 Composite

Significant enhancement of the UC emission in ZrO2–Al2O3 solid solutions samples was obtained compared to the pristine oxide samples—ZrO2 and Al2O3.

The reported anomalous emission intensity of the 5D0 → 7F4 transition of Eu3+ in a molybdate double perovskite

2015 ◽  
Vol 3 (5) ◽  
pp. 960-963 ◽  
Author(s):  
Wai-Lun Chan ◽  
Zhenyu Liu ◽  
Shengbo Lu ◽  
Peter A. Tanner ◽  
Ka-Leung Wong
Keyword(s):  
Transition Metal ◽  
Emission Intensity ◽  
Double Perovskite ◽  
Upconversion Emission ◽  
Starting Material ◽  
Metal Impurity ◽  
Transition Metal Impurity ◽  
Co Doped

The assigned anomalous upconversion emission intensity of the 5D0 → 7F4 transition of Eu3+ in the double perovskite Sr2Ca(W1−xMox)O6 co-doped with Yb3+ is shown to be due to a transition metal impurity present in the MoO3 starting material.

Dependence of upconversion emission intensity on Yb3+concentration in Er3+/Yb3+co-doped flake shaped Y2(MoO4)3phosphors

2010 ◽  
Vol 43 (8) ◽  
pp. 085404 ◽  
Author(s):  
Weili Lu ◽  
Lihong Cheng ◽  
Haiyang Zhong ◽  
Jiashi Sun ◽  
Jing Wan ◽  
...  
Keyword(s):  
Emission Intensity ◽  
Upconversion Emission ◽  
Co Doped
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