scholarly journals Blue-Light-Excited Eu3+/Sm3+ Co-Doped NaLa(MoO4)2 Phosphors: Synthesis, Characterizations and Red Emission Enhancement for WLEDs

Materials ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1090 ◽  
Author(s):  
Man Yan ◽  
Guanghui Liu ◽  
Jiahao Wen ◽  
Yinlong Wang
Keyword(s):  
Blue Light ◽  
Red Emission ◽  
Emission Enhancement ◽  
Co Doped

Site‐Selective Occupancy of Eu 2+ Toward Blue‐Light‐Excited Red Emission in a Rb 3 YSi 2 O 7 :Eu Phosphor

2019 ◽  
Vol 58 (33) ◽  
pp. 11521-11526 ◽  
Author(s):  
Jianwei Qiao ◽  
Lixin Ning ◽  
Maxim S. Molokeev ◽  
Yu‐Chun Chuang ◽  
Qinyuan Zhang ◽  
...  
Keyword(s):  
Blue Light ◽  
Red Emission ◽  
Site Selective

A highly-efficient blue-light excitable red phosphor: intramolecular π-stacking interactions in one dinuclear europium(iii) complex

2016 ◽  
Vol 45 (7) ◽  
pp. 2839-2844 ◽  
Author(s):  
Zhengliang Wang ◽  
Hui Yang ◽  
Pei He ◽  
Yonghui He ◽  
Jishou Zhao ◽  
...  
Keyword(s):  
Blue Light ◽  
Stacking Interactions ◽  
Red Phosphor ◽  
Red Emission ◽  
Highly Efficient ◽  
Π Stacking ◽  
Light Excitation

The europium(iii) complex [Eu2(2,7-BTFDBC)(DBM)4(Phen)2] with multiple T-shaped and parallel-displaced π-stacking interactions exhibits intense red emission under blue light excitation with high colour purity.

Structure and Up-Conversion Luminescence Properties of Er3+-Yb3+Co-Doped TiO2 Nanocrystals Prepared by Sol-Gel Method

2009 ◽  
Vol 66 ◽  
pp. 167-170 ◽  
Author(s):  
Zhen Zhong Zhang ◽  
Ji Hong Zhang ◽  
Wei Zhou ◽  
Ming Xia Song ◽  
Wei Li ◽  
...  
Keyword(s):  
Titanium Tetrachloride ◽  
Upconversion Luminescence ◽  
Sol Gel ◽  
Green Emission ◽  
X Ray Diffraction ◽  
Red Emission ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Co Doped

Er3+/Yb3+ co-doped TiO2 nanocrystals were prepared by Sol-gel method in which titanium tetrachloride was adopted as the precursor. The structure, particle size, and optical properties of samples were characterized by X-ray diffraction(XRD), Field emission-Scanning Electron Microscopy(FE-SEM) and photoluminescence(PL) spectra. Er3+ concentration was fixed at 1.0mol%, and Yb3+ concentration was changed from 3 to 10mol%. Intense upconversion luminescence was observed when the samples were excited by 980nm laser. The dependence of upconversion luminescence on Yb3+ concentration was presented. The results show that the upconversion luminescence increases with the Yb3+ concentration and gets its peak at 5%. The ratio of red emission to green emission(R/G) was strikingly enhanced with the increase of Yb3+ concentration. Under the excitation of 980nm, the green emission in the range of 520-570nm (2H11/2, 4S3/2→4I15/2) and the red emission in the range of 640~690nm (4F9/2 →4I15/2) are both due to two photons process. The possible upconversion mechanism was discussed.

Enhanced deep-red emission from Mn4+/Mg2+ co-doped CaGdAlO4 phosphors for plant cultivation

2019 ◽  
Vol 48 (7) ◽  
pp. 2455-2466 ◽  
Author(s):  
Jianxu Hu ◽  
Tinghong Huang ◽  
Yuanpeng Zhang ◽  
Bin Lu ◽  
Huanqing Ye ◽  
...  
Keyword(s):  
Red Emission ◽  
Plant Cultivation ◽  
Peak Intensity ◽  
Co Doped

Deep-red emission with a peak intensity at 712 nm is observed from the Mn4+/Mg2+ co-doped CaGdAlO4 phosphor for plant cultivation.

Enhanced ~1.8 μm photoluminescence under blue light excitation in Tm Bi co-doped germanate glass and its temperature dependence

2019 ◽  
Vol 525 ◽  
pp. 119645 ◽  
Author(s):  
Chengzhen Liu ◽  
Yixi Zhuang ◽  
Jianjun Han ◽  
Jian Ruan ◽  
Xiujian Zhao ◽  
...  
Keyword(s):  
Temperature Dependence ◽  
Blue Light ◽  
Germanate Glass ◽  
Light Excitation ◽  
Co Doped

Near-UV light excited Eu3+, Tb3+, Bi3+ co-doped LaPO4 phosphors: Synthesis and enhancement of red emission for WLEDs

2015 ◽  
Vol 41 (4) ◽  
pp. 5525-5530 ◽  
Author(s):  
Yao Xia ◽  
Yingheng Huang ◽  
Qiwei Long ◽  
Sen Liao ◽  
Yong Gao ◽  
...  
Keyword(s):  
Uv Light ◽  
Red Emission ◽  
Co Doped

Quantum-plasmonic interaction: emission enhancement of Er3+- Tm3+co-doped tellurite glass via tuning nanobowtie

2013 ◽  
Author(s):  
O. B. Silva ◽  
V. A. G. Rivera ◽  
F. A. Ferri ◽  
Y. Ledemi ◽  
A. R. Zanatta ◽  
...  
Keyword(s):  
Tellurite Glass ◽  
Emission Enhancement ◽  
Co Doped

Composition-Dependent Ultraviolet up-Conversion Luminescence in Yb3+-Ho3+ Co-Doped Germanium- Phosphate Glasses

2011 ◽  
Vol 266 ◽  
pp. 5-8 ◽  
Author(s):  
Yan Min Yang ◽  
Wei Zhang ◽  
Shan Du ◽  
Zhi Ping Yang
Keyword(s):  
Emission Intensity ◽  
Glass Sample ◽  
Green Emission ◽  
Phosphate Glasses ◽  
Ultraviolet Emission ◽  
Red Emission ◽  
Excitation Mechanisms ◽  
Uv Visible ◽  
Holmium Ion ◽  
Co Doped

Yb3+-Ho3+ co-doped germanium-phosphate glasses have been prepared and characterized for its optical properties through measuring photoluminescence and Raman spectra. UV-visible up-conversion emission of holmium ion in Yb3+-Ho3+ co-doped germanium-phosphate glasses has been observed on 980nm excitation. As phosphate was substituted for germanium the red emission Red I decreased at first and then increased later while the green emission Green I decreased and the ratio of Red I to Green I increased. Interestingly, the value of ultraviolet emission intensity was larger than that of the blue and green emission intensity in phosphate glass sample. We believe that Yb3+-Ho3+ co-doped germanium-phosphate glasses might be a potential host material for developing ultraviolet all–solid compact lasers. The possible excitation mechanisms involved in these emissions were discussed, too.

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