scholarly journals Structure and white LED properties of Ce-doped YAG-Al2O3eutectics grown by the micro-pulling-down method

CrystEngComm ◽  
2019 ◽  
Vol 21 (31) ◽  
pp. 4545-4550 ◽  
Author(s):  
Qingsong Song ◽  
Xiaodong Xu ◽  
Jian Liu ◽  
Xiangshai Bu ◽  
Dongzhen Li ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Light Emitting Diodes ◽  
White Led ◽  
Light Emitting ◽  
White Light Emitting Diodes

A series of Ce-doped YAG-Al2O3eutectics were grown by the micro-pulling-down (μ-PD) method for the purpose of high power white light emitting diodes.

Glass-ceramic composites for high-power white-light-emitting diodes

2021 ◽  
Author(s):  
Alessandro Longato ◽  
Sebastiano Picco ◽  
Lorenzo Moro ◽  
Matteo Buffolo ◽  
Carlo De Santi ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Glass Ceramic ◽  
Light Emitting Diodes ◽  
Ceramic Composites ◽  
Light Emitting ◽  
White Light Emitting Diodes

Sn–P–F containing glass matrix for the fabrication of phosphor-in-glass for use in high power LEDs

RSC Advances ◽  
2016 ◽  
Vol 6 (113) ◽  
pp. 111640-111647 ◽  
Author(s):  
Heeyeon Yoo ◽  
Yoshihiro Kouhara ◽  
Hee Chang Yoon ◽  
Sang Jun Park ◽  
Ji Hye Oh ◽  
...  
Keyword(s):  
Melting Point ◽  
White Light ◽  
High Power ◽  
Glass Ceramic ◽  
Glass Matrix ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Light Emitting Diodes

In this study, we introduce a low-melting-point (MP) glass ceramic (GlaC) material which can be used to fabricate a phosphor-in-glass (PiG) with Y3Al5O12:Ce3+ (YAG) phosphor for the realization of high-power white-light-emitting diodes (WLEDs).

A complete inorganic colour converter based on quantum-dot-embedded silicate glasses for white light-emitting-diodes

2016 ◽  
Vol 52 (17) ◽  
pp. 3564-3567 ◽  
Author(s):  
Karam Han ◽  
Won Bin Im ◽  
Jong Heo ◽  
Woon Jin Chung
Keyword(s):  
Quantum Dot ◽  
White Light ◽  
Light Emitting Diodes ◽  
Silicate Glasses ◽  
White Led ◽  
Light Emitting ◽  
White Light Emitting Diodes ◽  
Color Converter

A complete inorganic quantum dot color converter for a white LED is achieved using silicate-based quantum-dot-embedded glasses (QDEGs).

Improved Yellow Light Emission in the Achievement of Dichromatic White Light Emitting Diodes

2013 ◽  
Vol 1538 ◽  
pp. 371-375
Author(s):  
Zhao Si ◽  
Tongbo Wei ◽  
Jun Ma ◽  
Ning Zhang ◽  
Zhe Liu ◽  
...  
Keyword(s):  
Blue Light ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Dual Wavelength ◽  
Emission Wavelength ◽  
White Led ◽  
Yellow Light ◽  
Light Emitting ◽  
White Light Emitting Diodes

ABSTRACTA study about the achievement of dichromatic white light-emitting diodes (LEDs) was performed. A series of dual wavelength LEDs with different last quantum-well (LQW) structure were fabricated. The bottom seven blue light QWs (close to n-GaN layer) of the four samples were the same. The LQW of sample A was 3 nm, and that of sample B, C and D were 6 nm, a special high In content ultra-thin layer was inserted in the middle of the LQW of sample C and on top of that of sample D. XRD results showed In concentration fluctuation and good interface quality of the four samples. PL measurements showed dual wavelength emitting, the blue light peak position of the four samples were almost the same, sample A with a narrower LQW showed an emission wavelength much shorter than that of sample B, C, D. EL measurement was done at an injection current of 100 mA. Sample A only showed LQW emission due to holes distribution. Because of wider LQW, the emission wavelength of sample B, C and D was longer and peak intensity was weaker. Sample D with insert layer on top of LQW showed strongest yellow light emission with a blue peak. As the injection current increased, sample A showed highest output light power due to narrower LQW. Of the other three samples with wider LQW, sample D showed highest output power. Effective yellow light emission has always been an obstacle to the achievement of dichromatic white LED. Sample D with insert layer close to p-GaN can confine the hole distribution more effectively hence the recombination of holes and electrons was enhanced, the yellow light emission was improved and dichromatic white LED was achieved.

Decay mechanisms of lumen and chromaticity for high-power phosphor-based white-light-emitting diodes in thermal aging

2008 ◽  
Author(s):  
Chun-Chin Tsai ◽  
Ming-Hung Chen ◽  
Chao-Wei Lee ◽  
Yuan-Tsun Lo ◽  
Yi-Cheng Hsu ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Thermal Aging ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Light Emitting Diodes

scholarly journals Analysis of high-power packages for phosphor-based white-light-emitting diodes

2005 ◽  
Vol 86 (24) ◽  
pp. 243505 ◽  
Author(s):  
Hong Luo ◽  
Jong Kyu Kim ◽  
E. Fred Schubert ◽  
Jaehee Cho ◽  
Cheolsoo Sone ◽  
...  
Keyword(s):  
White Light ◽  
High Power ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
White Light Emitting Diodes

Luminescence properties of single-phase color-tunable Li4SrCa(Si2O4N8/3):Eu2+ phosphor for white light-emitting diodes

RSC Advances ◽  
2016 ◽  
Vol 6 (45) ◽  
pp. 38731-38740 ◽  
Author(s):  
Chenxia Li ◽  
Jian Dai ◽  
Hua Yu ◽  
Degang Deng ◽  
Jun Huang ◽  
...  
Keyword(s):  
White Light ◽  
Single Phase ◽  
Light Emitting Diodes ◽  
Color Temperature ◽  
White Led ◽  
Light Emitting ◽  
Color Coordinates ◽  
Uv Led ◽  
Color Tunable ◽  
White Light Emitting Diodes

A white LED consisting of a LSCSN:0.03Eu2+ phosphor and a 375 nm UV LED chip had CIE color coordinates of (0.3568, 0.3111) and achieved a Ra of 82.5 around the correlated color temperature of 3318 K.

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