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.

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

Strong f ‐ f Excitation and Bright Red Emission in Cd 4 Gd 1‐ x Eu x O(BO 3 ) 3 (0≤ x ≤1): Near‐UV LED Pumped Red Phosphor with Low Thermal Quenching

2019 ◽  
Vol 14 (9) ◽  
pp. 1541-1548 ◽  
Author(s):  
Chao Yin ◽  
Mufei Yue ◽  
Pengfei Jiang ◽  
Ruirui Yang ◽  
Xianju Zhou ◽  
...  
Keyword(s):  
Thermal Quenching ◽  
Red Phosphor ◽  
Red Emission ◽  
Uv Led

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.

Red-emitting phosphors APF6:Mn4+ (A = Cs+, Rb+, K+): synthesis, luminescence properties and application in solid-state lighting

2019 ◽  
Vol 48 (29) ◽  
pp. 10901-10906 ◽  
Author(s):  
Yu Chen ◽  
Zhaofeng Yang ◽  
Qin Wang ◽  
Meizhu Rong ◽  
Qiang Zhou ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Thermal Quenching ◽  
Solid State Lighting ◽  
Luminescence Properties ◽  
Red Emission ◽  
White Leds

New red-emitting phosphors APF6:Mn4+ (A = Cs+, Rb+, K+) show intense red emission with high external quantum efficiency and thermal quenching resistance for warm white LEDs.

Colour Photometry of the Solar Corona of July 11, 1991

1994 ◽  
Vol 144 ◽  
pp. 597-599 ◽  
Author(s):  
I. V. Alexeyeva ◽  
N. L. Kroussanova ◽  
M. V. Streltsova
Keyword(s):  
Solar Corona ◽  
Red Emission ◽  
Coronal Structures

AbstractThe results of photometry of colour positives of the solar corona of July 11, 1991 are presented. Observations of the white corona were made without radial niters in Jojutla (Mexico). Dependences of coronal brightness on distance in the red (640 nm) and blue (420 nm) wavelength intervals are deduced for different coronal structures up to 3.0-3.5R⊙. The effect of ”reddening“ is noted. The excess of the red emission to the blue one (I640nm/I420nm) is found to be 1.20 and 1.17 at distance of 2.2R⊙for the N-E helmet streamer (P ≃ 37°) and the N-W region of low brightness (P ≃ 339°), respectively.

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