Nano Wave Plates Structuring and Index Matching in Transparent Hydroxyapatite‐YAG: Ce Composite Ceramics for High Luminous Efficiency White Light‐Emitting Diodes

2019 ◽  
Vol 32 (1) ◽  
pp. 1905951 ◽  
Author(s):  
Ping Huang ◽  
Beiying Zhou ◽  
Qi Zheng ◽  
Yuan Tian ◽  
Mengmeng Wang ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Composite Ceramics ◽  
Light Emitting ◽  
Index Matching ◽  
White Light Emitting Diodes

Luminous efficiency enhancement of white light-emitting diodes by using a hybrid phosphor structure

2015 ◽  
Vol 5 (1) ◽  
pp. 057603 ◽  
Author(s):  
Bing-Cheng Lin ◽  
Jhih-Kai Huang ◽  
Kuo-Ju Chen ◽  
Sheng-Huan Chiu ◽  
Zong-Yi Tu ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Efficiency Enhancement ◽  
Light Emitting ◽  
White Light Emitting Diodes

scholarly journals Enhancement of luminous efficiency by hybrid structure for warm white light-emitting diodes

2014 ◽  
Vol 1 (1) ◽  
pp. 9 ◽  
Author(s):  
Chin-Wei Sher ◽  
Kuo-Ju Chen ◽  
Chien-Chung Lin ◽  
Hau-Vei Han ◽  
Bing-Cheng Lin ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Hybrid Structure ◽  
Luminous Efficiency ◽  
Light Emitting ◽  
Warm White Light ◽  
White Light Emitting Diodes

Highly luminescent and stable white light-emitting diodes created by direct incorporation of Cd-free quantum dots in silicone resins using the thiol group

2015 ◽  
Vol 3 (26) ◽  
pp. 6908-6915 ◽  
Author(s):  
Cheolsang Yoon ◽  
Taewoo Kim ◽  
Min-Ho Shin ◽  
Young-Geon Song ◽  
Kyusoon Shin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
White Light ◽  
High Stability ◽  
Light Emitting Diodes ◽  
Thiol Group ◽  
Luminous Efficiency ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Color Conversion ◽  
Direct Incorporation

WLEDs fabricated by direct incorporation of QDs into silicone resins using the thiol group exhibit enhanced color conversion and luminous efficiency with high stability.

Improvement of Luminous Efficiency in White Light Emitting Diodes by Reducing a Forward-bias Voltage

2007 ◽  
Vol 46 (No. 40) ◽  
pp. L963-L965 ◽  
Author(s):  
Yukio Narukawa ◽  
Masahiko Sano ◽  
Masatsugu Ichikawa ◽  
Shunsuke Minato ◽  
Takahiko Sakamoto ◽  
...  
Keyword(s):  
Bias Voltage ◽  
White Light ◽  
Light Emitting Diodes ◽  
Forward Bias ◽  
Luminous Efficiency ◽  
Light Emitting ◽  
Forward Bias Voltage ◽  
White Light Emitting Diodes

White Light Emitting Diodes of GaN-Based Sr2SiO4:Eu and the Luminescent Properties

2004 ◽  
Vol 449-452 ◽  
pp. 953-956
Author(s):  
J.K. Park ◽  
Chang Hoi Kim ◽  
Kyung Joo Choi ◽  
H.D. Park ◽  
Se Young Choi
Keyword(s):  
White Light ◽  
Light Emitting Diodes ◽  
Luminescent Properties ◽  
Luminous Efficiency ◽  
Light Emitting ◽  
Yellow Phosphor ◽  
Blue Led ◽  
White Leds ◽  
Naked Eye ◽  
White Light Emitting Diodes

We have synthesized a Eu2+-activated Sr2SiO4yellow phosphor and investigated an attempt to develop white LEDs by combining it with a GaN blue LED chip. Two distinct emission bands from the GaN-based LED and the Sr2SiO4:Eu phosphor are clearly observed at 400 nm and at around 550 nm, respectively. These two emission bands combine to give a spectrum that appears white to the naked eye. Our results show that GaN (400 nm chip)-based Sr2SiO4:Eu exhibits a better luminous efficiency than that of the industrially available product InGaN (460 nm chip)-based YAG:Ce.

Effect of phosphor geometry on the luminous efficiency of high-power white light-emitting diodes with excellent color rendering property

2008 ◽  
Vol 34 (1) ◽  
pp. 1 ◽  
Author(s):  
Yu-Ho Won ◽  
Ho Seong Jang ◽  
Kyoung Woo Cho ◽  
Yong Seon Song ◽  
Duk Young Jeon ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Light Emitting Diodes ◽  
Luminous Efficiency ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Color Rendering ◽  
Excellent Color
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