High Concentration of Bi3+ Incorporated into RNbO4:Eu3+ (R = La, Y, Gd) as Red Phosphors for White LED Applications

2008 ◽  
Vol 52 (2) ◽  
pp. 431-434 ◽  
Author(s):  
Tae-Keun Park ◽  
Han-Cheol Ahn ◽  
Sun-Il Mho
Keyword(s):  
White Led ◽  
High Concentration ◽  
Red Phosphors

Fabrication and Luminescence Properties of CaMoO4:Eu3+ Red Phosphors for White LED

2010 ◽  
Vol 663-665 ◽  
pp. 441-444
Author(s):  
Zhen Hua Liang ◽  
Yu Zhi Feng ◽  
Xiao Xia Liu ◽  
Gui Hua Peng
Keyword(s):  
Luminescent Properties ◽  
Luminescence Properties ◽  
Precipitation Method ◽  
White Led ◽  
Doping Amount ◽  
Red Phosphors ◽  
Co Precipitation ◽  
The Relationship

CaMoO4: Eu3+ red phosphors were synthesized by co-precipitation method with H3BO3 as an additive and the relationship between H3BO3 doping amount and luminescent properties were studied. The brightness increased with increasing H3BO3 amount, the brightness of the CaMoO4: Eu3+ powder with 10 mol％ H3BO3 was 3.2 times higher than that of the phosphor without H3BO3.

Luminescence properties of Na2SiF6:Mn4+red phosphors for high colour-rendering white LED applications synthesized via a simple exothermic reduction reaction

2017 ◽  
Vol 1 (5) ◽  
pp. 928-932 ◽  
Author(s):  
Tian-Chun Lang ◽  
Tao Han ◽  
Ling-Ling Peng ◽  
Ming-Jing Tu
Keyword(s):  
Emission Spectra ◽  
Reduction Reaction ◽  
Luminescence Properties ◽  
White Led ◽  
Red Emission ◽  
Red Phosphors ◽  
Colour Rendering

Na2SiF6:Mn4+red phosphors were synthesizedviaa simple exothermic reduction reaction, and produced a sharp red emission spectra.

Effect of two bio-polysaccharides on organogenesis of protocorm-like bodies in Phalaenopsis cultured in vitro

2020 ◽  
Vol 26 (1) ◽  
pp. 2137-2142
Author(s):  
A. M. Meskatul ◽  
K. Shimasaki ◽  
S. U. Habiba
Keyword(s):  
Shoot Formation ◽  
Vital Role ◽  
White Led ◽  
Fresh Weight ◽  
High Concentration ◽  
Low Concentrations ◽  
Different Types ◽  
Modified Ms Medium ◽  
Led Lights

Different types of bio-polysaccharide play a vital role in the growth of PLBs cultured in vitro. In this study, to we investigated the potential impacts of two bio-polymers,: hyaluronic acid (HA9) and sodium alginate (ALG) on the organogenesis of protocorm-like bodies (PLBs) in Phalaenopsis under white LED lights. PLBs of Phalaenopsis ‘Fmk02010’ were explanted on modified MS medium with different concentrations of HA and (ALG). The highest average number of PLBs per explant (24.6) was recorded for ALG alone at a concentration of 0.01mg/L, and the fresh weight was also highest at the same concentration. The combination of 0.01mg/L ALG and 0.01mg/L HA also resulted in a large number of PLBs (23.8) and high fresh weight. As opposed to, the highest number of shoots /explant (3.6) was observed at the treatment of the combination of 1mg/L ALG and 10mg/L HA. This study shows that the application of ALG and HA alone, and in combination, at low concentrations, increased the average number of PLBs and the amount of fresh weight, but shoot formation was higher at a high concentration compared with control.

Luminescence investigation of red phosphors Ca0.54Sr0.34−1.5xEu0.08Smx(MoO4)y (WO4)1−y for UV-white LED device

2009 ◽  
Vol 129 (6) ◽  
pp. 585-588 ◽  
Author(s):  
Fa-bin Cao ◽  
Yan-wen Tian ◽  
Yong-jie Chen ◽  
Lin-jiu Xiao ◽  
Qian Wu
Keyword(s):  
White Led ◽  
Red Phosphors ◽  
Luminescence Investigation

Novel Mn4+ doped red phosphors composed of MgAl2O4 and CaAl12O19 phases for light-emitting diodes

2020 ◽  
Vol 49 (11) ◽  
pp. 3606-3614 ◽  
Author(s):  
Yibing Wu ◽  
Yixi Zhuang ◽  
Rong-Jun Xie ◽  
Kaibin Ruan ◽  
Xinhua Ouyang
Keyword(s):  
Plant Growth ◽  
Light Emitting Diodes ◽  
White Led ◽  
Light Emitting ◽  
Red Phosphors

The EL spectra and photographs of the as-obtained plant growth LED and white LED by using CMA:Mn4+ red phosphors.

Efficient and ultra-thermally stable Eu3+ and Sm3+ activated narrow band red/deep red emitting phosphors and their versatile applications

2021 ◽  
Author(s):  
Priyadarshini Pradhan ◽  
Savita Priya ◽  
R. Marikumar ◽  
Kasturi Singh ◽  
Sivakumar Vaidyanathan
Keyword(s):  
Optical Properties ◽  
Plant Growth ◽  
Narrow Band ◽  
White Led ◽  
Thermally Stable ◽  
Latent Fingerprint ◽  
Red Phosphors

A succession of Eu3+ activated Na2Y4(WO4)7 (NYW) red phosphors were synthesised and studied their optical properties in details for white LED, latent fingerprint and plant growth applications. The phosphors crystallised...

Novel red phosphors Gd2GaTaO7:Eu3+,Bi3+ for white LED applications

2015 ◽  
Vol 26 (8) ◽  
pp. 5743-5747 ◽  
Author(s):  
Linda T. Francis ◽  
P. Prabhakar Rao ◽  
S. K. Mahesh ◽  
T. S. Sreena ◽  
Parvathi S. Babu
Keyword(s):  
White Led ◽  
Red Phosphors
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