Yb3+-Concentration dependent upconversion luminescence and temperature sensing behavior in Yb3+/Er3+ codoped Gd2MoO6 nanocrystals prepared by a facile citric-assisted sol–gel method

2017 ◽  
Vol 4 (12) ◽  
pp. 1987-1995 ◽  
Author(s):  
Peng Du ◽  
Xiaoyong Huang ◽  
Jae Su Yu
Keyword(s):  
Upconversion Luminescence ◽  
Sol Gel ◽  
Temperature Sensing ◽  
Gel Method ◽  
Sol Gel Method ◽  
Sensor Sensitivity ◽  
Optical Thermometry ◽  
Upconversion Nanocrystals

Er3+/Yb3+-Codoped Gd2MoO6 upconversion nanocrystals with high sensor sensitivity and wide operation range were demonstrated for non-contact optical thermometry.

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.

Synthesis, structure and upconversion luminescence of Yb3+, Ho3+ co-doped Gd3Al5O12 garnet phosphor prepared by the Pechini sol–gel method

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54435-54439 ◽  
Author(s):  
Jianfeng Tang ◽  
Jie Gou ◽  
Guannan Li ◽  
Yuan Li ◽  
Hong He ◽  
...  
Keyword(s):  
Upconversion Luminescence ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Pure Phase ◽  
Co Doped

A pure-phase phosphor of Gd3Al5O12 garnet (GAG) co-doped with Yb3+ and Ho3+ ions has been synthesized by the Pechini sol–gel method.

scholarly journals Highly sensitive optical temperature sensing based on pump-power-dependent upconversion luminescence in LiZnPO4:Yb3+–Er3+/Ho3+ phosphors

RSC Advances ◽  
2021 ◽  
Vol 11 (49) ◽  
pp. 30926-30936
Author(s):  
Kamel Saidi ◽  
Wajdi Chaabani ◽  
Mohamed Dammak
Keyword(s):  
Pump Power ◽  
Pechini Method ◽  
Upconversion Luminescence ◽  
Sol Gel ◽  
Temperature Sensing ◽  
Optical Thermometry ◽  
Highly Sensitive

Novel orthophosphate LiZnPO4:Yb3+–Er3+/Ho3+ with tunable luminescence have been synthesized via sol–gel/Pechini method for optical thermometry.

Synthesis and Photocatalytic Property of N-doped BiVO$lt;inf$gt;4$lt;/inf$gt; via Sol-Gel Method Using Corn Stem as Template

2014 ◽  
Vol 29 (8) ◽  
pp. 807
Author(s):  
WANG Min ◽  
NIU Chao ◽  
DONG Zhan-Jun ◽  
CHE Yin-Sheng ◽  
DONG Duo ◽  
...  
Keyword(s):  
Sol Gel ◽  
Photocatalytic Property ◽  
Gel Method ◽  
Sol Gel Method

Fe2O3 - TiO2 THIN FILMS PREPARED BY SOL-GEL METHOD

2011 ◽  
Vol 10 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Ramona-Crina Suciu ◽  
Marcela Corina Rosu ◽  
Teofil Danut Silipas ◽  
Emil Indrea ◽  
Violeta Popescu ◽  
...  
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Tio2 Thin Films ◽  
Gel Method ◽  
Sol Gel Method

NiO-doped CaCu3Ti4O12 Thin Film by Sol-Gel Method

2013 ◽  
Author(s):  
Dong XU ◽  
Qi SONG ◽  
Ke ZHANG ◽  
Hong-Xing XU ◽  
Yong-Tao YANG ◽  
...  
Keyword(s):  
Thin Film ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method
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