scholarly journals Enhanced light emission in blue light-emitting diodes by multiple Mie scattering from embedded silica nanosphere stacking layers

2011 ◽  
Vol 19 (23) ◽  
pp. 23429 ◽  
Author(s):  
Young Jae Park ◽  
Ji Hye Kang ◽  
Hee Yun Kim ◽  
Volodymyr V. Lysak ◽  
S. Chandramohan ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Mie Scattering ◽  
Light Emitting ◽  
Silica Nanosphere

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.

Aggregation-enhanced emission active tetraphenylbenzene-cored efficient blue light emitter

2017 ◽  
Vol 196 ◽  
pp. 245-253 ◽  
Author(s):  
Lingzhi Li ◽  
Han Nie ◽  
Ming Chen ◽  
Jingzhi Sun ◽  
Anjun Qin ◽  
...  
Keyword(s):  
Blue Light ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Organic Light Emitting Diodes ◽  
Emission Characteristics ◽  
Blue Light Emission ◽  
Light Emitting ◽  
Light Emitter ◽  
Organic Light

A tetraphenylbenzene (TPB) cored luminophore of TPB-AC with aggregation-enhanced emission characteristics was designed and synthesized. TPB-AC could be potentially applied for the fabrication of high performance organic light-emitting diodes (OLEDs) with blue light emission.

Dual-Wavelength Light Emission from CdSe/ZnS Quantum Dots on Blue Light-Emitting Diodes

2015 ◽  
Vol 15 (12) ◽  
pp. 10037-10040 ◽  
Author(s):  
Tae Hoon Seo ◽  
Ah Hyun Park ◽  
Seul Bee Lee ◽  
Gun Hee Lee ◽  
Myung Jong Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Dual Wavelength ◽  
Light Emitting ◽  
Wavelength Light

Epitaxtial lift-off for freestanding InGaN/GaN membranes and vertical blue light-emitting-diodes

2020 ◽  
Vol 8 (24) ◽  
pp. 8284-8289
Author(s):  
Jian Jiang ◽  
Jianqi Dong ◽  
Baoyu Wang ◽  
Chenguang He ◽  
Wei Zhao ◽  
...  
Keyword(s):  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Electrochemical Etching ◽  
Light Emitting ◽  
Emission Properties ◽  
Etching Method ◽  
Lift Off

An electrochemical etching method was utilized to fabricate freestanding InGaN/GaN membranes, and vertical blue LEDs with excellent light emission properties were then demonstrated.

Electron-leakage-related low-temperature light emission efficiency behavior in GaN-based blue light-emitting diodes

2014 ◽  
Vol 35 (4) ◽  
pp. 044007 ◽  
Author(s):  
Dawei Yan ◽  
Lisha Li ◽  
Jian Ren ◽  
Fuxue Wang ◽  
Guofeng Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
Light Emitting ◽  
Electron Leakage ◽  
Emission Efficiency

scholarly journals Cool to warm white light emission from hybrid inorganic/organic light-emitting diodes

2016 ◽  
Vol 4 (48) ◽  
pp. 11499-11507 ◽  
Author(s):  
Elaine Taylor-Shaw ◽  
Enrico Angioni ◽  
Neil J. Findlay ◽  
Benjamin Breig ◽  
Anto R. Inigo ◽  
...  
Keyword(s):  
Blue Light ◽  
White Light ◽  
Light Emitting Diodes ◽  
Light Emission ◽  
White Light Emission ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Warm White Light

The synthesis and characterisation of two novel organic down-converting molecules is disclosed, together with their performance as functional colour-converters in combination with inorganic blue light-emitting diodes (LEDs).

Blue light-emitting diodes in hair regrowth: the first prospective study

2021 ◽  
Author(s):  
G. Lodi ◽  
M. Sannino ◽  
G. Cannarozzo ◽  
A. Giudice ◽  
E. Del Duca ◽  
...  
Keyword(s):  
Prospective Study ◽  
Blue Light ◽  
Light Emitting Diodes ◽  
Light Emitting ◽  
Hair Regrowth
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