Full-visible-spectrum emission with high color rendering index and low correlated color temperature enabled by a single-phased phosphor of α-Sr2V1.98P0.02O7: 0.5% Eu3+

Author(s):  
Yanzhen Yin ◽  
Zhen Wang ◽  
Maochen Zhu ◽  
Yue Zhang ◽  
Jianhong Li ◽  
...  
2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Minhao Zhang ◽  
Yu Chen ◽  
Guoxing He

The correlated color temperature (CCT) tunable white-light LED cluster with extrahigh color rendering property has been found by simulation and fabricated, which consists of three WW LEDs (CCT = 3183 K), one red LED (634.1 nm), one green LED (513.9 nm), and one blue LED (456.2 nm). The experimental results show that this cluster can realize the CCT tunable white-lights with a color rendering index (CRI) above 93, special CRI R9 for strong red above 90, average value of the special CRIs of R9 to R12 for the four saturated colors (red, yellow, green, and blue) above 83, and luminous efficacies above 70 lm/W at CCTs of 2719 K to 6497 K.


1977 ◽  
Vol 1 (2) ◽  
pp. 31-39 ◽  
Author(s):  
Tenji WAKE ◽  
Tadashi KIKUCHI ◽  
Keishiro TAKEICHI ◽  
Masaru KASAMA ◽  
Hisashi KAMISASA

2019 ◽  
Vol 43 (44) ◽  
pp. 17367-17382 ◽  
Author(s):  
Sisira S. ◽  
Linju Ann Jacob ◽  
Kamal P. Mani ◽  
Biju P. R. ◽  
N. V. Unnikrishnan ◽  
...  

Single phase white light emitting CePO4 nanocrystals doped with Tb3+ and Sm3+ were synthesized. The quality of white light is characterized by CIE chromaticity coordinates, color temperature, color rendering index and quantum yield.


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