Highly Eu3+ ions doped novel red emission solid solution phosphors Ca18Li3(Bi,Eu)(PO4)14: structure design, characteristic luminescence and abnormal thermal quenching behavior investigation

2019 ◽  
Vol 48 (5) ◽  
pp. 1624-1632 ◽  
Author(s):  
Ge Zhu ◽  
Zhuowei Li ◽  
Chuang Wang ◽  
Xuejiao Wang ◽  
Faguang Zhou ◽  
...  
Keyword(s):  
Solid Solution ◽  
Thermal Quenching ◽  
Photoluminescence Property ◽  
Structure Design ◽  
Design Characteristic ◽  
Red Emission

Photoluminescence property and abnormal thermal quenching behavior investigation of Ca18Li3Bi(PO4)14:Eu3+ solid solution phosphors.

Enhanced red emission and improved thermal quenching of CaAlSiN 3 :Eu 2+ phosphors via boron doping

2021 ◽  
Author(s):  
Xiangyu Lu ◽  
Hailong Yuan ◽  
Zhifeng Huang ◽  
Yujuan Zhou ◽  
Fei Chen ◽  
...  
Keyword(s):  
Thermal Quenching ◽  
Boron Doping ◽  
Red Emission

Luminescence properties of Mn4+ with high 2Eg level energy in the polyfluoride Na3Li3Sc2F12

2020 ◽  
Vol 49 (33) ◽  
pp. 11613-11617
Author(s):  
Hong Li ◽  
Yan Liu ◽  
Shu Tang ◽  
Lijun Luo ◽  
Qiang Zhou ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Thermal Quenching ◽  
Luminescence Properties ◽  
Level Energy ◽  
Red Emission ◽  
White Leds ◽  
Red Emitting Phosphor

Red-emitting phosphor Na3Li3Sc2F12:Mn4+ with the high 2Eg level energy shows intensive red emission accompanied with the high external quantum efficiency and thermal-quenching resistance for warm white LEDs.

Effect of Doping Mode on the Photoluminescence Property of CaS:Eu Phosphor

2008 ◽  
Vol 368-372 ◽  
pp. 315-318
Author(s):  
Yu Juan Xia ◽  
Wei Feng Liu ◽  
Fu Qiang Huang ◽  
Wen Deng Wang ◽  
Xin Ping Lin ◽  
...  
Keyword(s):  
Uniform Distribution ◽  
Emission Intensity ◽  
Photoluminescence Property ◽  
Luminescence Properties ◽  
Red Emission ◽  
Effect Of Doping

Eu-doped CaS phosphors were prepared from sulfurization of CaCO3 in H2S gas without flux. The doping of Eu activator was conducted in two different modes: synchronous doping during sulfurization of CaCO3 and subsequent doping by vacuumly calcinning pure CaS and Eu2O3. Comparison of the as-prepared samples indicated that subsequent doping led to larger optimum Eu concentration and lower red emission intensity than synchronous doping. The different luminescence properties are ascribed to the different activator distributions in CaS host induced by different doping modes, and the uniform distribution resulted from synchronous doping is beneficial to the luminescence of the phosphor.

Effects of full-range Eu concentration on Sr2-2xEu2xSi5N8 phosphors: A deep-red emission and luminescent thermal quenching

2019 ◽  
Vol 770 ◽  
pp. 1069-1077 ◽  
Author(s):  
Xiaolang Liu ◽  
Zhen Song ◽  
Yuwei Kong ◽  
Shuxin Wang ◽  
Shiyou Zhang ◽  
...  
Keyword(s):  
Full Range ◽  
Thermal Quenching ◽  
Red Emission

Applications of Smart Material of Li2O-(Nb/Ta)2O5-TiO2 Solid Solution Having a Unique Periodical Structure

2021 ◽  
Vol 1016 ◽  
pp. 1009-1013
Author(s):  
Hiromi Nakano
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Grain Growth ◽  
Smart Material ◽  
Broad Peak ◽  
Red Emission ◽  
Unique Structure ◽  
Trigonal Structure ◽  
Periodical Structure ◽  
Pl Intensity

In the Li2O-M2O5-TiO2 system, Li1+x-yM1-x-3yTix+4yO3 (M = Nb, or Ta, 0.06 ≤ x ≤ 0.33, 0 ≤ y ≤ 0.175 (LMT) forms a superstructure, known as smart material. The superstructure is formed by periodical insertion of a corundum-type intergrowth layer of [Ti2O3]2+ in a matrix having a trigonal structure during the grain growth. To apply this unique structure as a host material of phosphor, new phosphors doped with Mn4+ ion with a red emission colour, which had a broad peak around 685 nm excited by 493 nm. In order to improve the PL intensity, we investigated the compositions, Mn4+ ratio and crystal structure. Results showed that PL intensity was closely related to Mn4+ ratio and its crystal structure.

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