Light-emitting diodes
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TLDR
Bergh and P.J.Dean as discussed by the authors proposed a light-emitting diode (LEDD) for light-aware Diodes, which was shown to have promising performance.Abstract:
Light-Emitting Diodes. (Monographs in Electrical and Electronic Engineering.) By A. A. Bergh and P. J. Dean. Pp. viii+591. (Clarendon: Oxford; Oxford University: London, 1976.) £22.read more
Citations
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Reliability Engineering and System Safety
TL;DR: In this paper, a polynomial dimensional decomposition (PDD) method for global sensitivity analysis of stochastic systems subject to independent random input following arbitrary probability distributions is presented.
Journal ArticleDOI
Origin of efficiency droop in GaN-based light-emitting diodes
Min-Ho Kim,Martin F. Schubert,Qi Dai,Jong Kyu Kim,E. Fred Schubert,Joachim Piprek,Yongjo Park +6 more
TL;DR: In this paper, the efficiency droop in GaInN∕GaN multiple-quantum well (MQW) light-emitting diodes was investigated and it was shown that the droop is not related to MQW efficiency but rather to the recombination of carriers outside the MqW region.
Journal ArticleDOI
Lasing in direct-bandgap GeSn alloy grown on Si
Stephan Wirths,R. Geiger,R. Geiger,N. von den Driesch,Gregor Mussler,Toma Stoica,Siegfried Mantl,Zoran Ikonic,Martina Luysberg,Stefano Chiussi,J. M. Hartmann,Hans Sigg,Jérôme Faist,Dan Buca,Detlev Grützmacher +14 more
TL;DR: In this paper, a direct bandgap GeSn alloy, grown directly onto Si(001), was used for experimentally demonstrating lasing threshold and linewidth narrowing at low temperatures.
Journal ArticleDOI
Spectroscopic and Device Aspects of Nanocrystal Quantum Dots
Jeffrey M. Pietryga,Young-Shin Park,Young-Shin Park,Jaehoon Lim,Andrew F. Fidler,Wan Ki Bae,Sergio Brovelli,Victor I. Klimov +7 more
TL;DR: Recent advances in nanocrystal research related to applications of QD materials in lasing, light-emitting diodes (LEDs), and solar energy conversion are examined.
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LED Based Indoor Visible Light Communications: State of the Art
TL;DR: This paper provides a comprehensive survey on VLC with an emphasis on challenges faced in indoor applications over the period 1979-2014.
References
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Proceedings ArticleDOI
A single-stage LED driver for street-lighting applications with high PF
TL;DR: A novel single-stage, high-power-factor LED driver for street-lighting applications that combines a dual boost power-factor-correction AC-DC converter with a half-bridge-type LLC DC-DC resonant converter into a single- stage conversion circuit topology is proposed.
Dissertation
Color masterbatches for polyamide 6 fibers.Optimization of compounding and spinning processes.Physical-chemical characterization of industrial products.
TL;DR: In this article, the authors investigated the industrial production process of the Color Masterbatches and the parameters that influence the pigment dispersion into the polymer matrix, and focused on the production process optimization in order to increase the quality of the final product and to minimize their environmental impact.
Journal ArticleDOI
Failure mechanisms in blue InGaN/GaN LEDs for high power operation
TL;DR: Unpredictable fast failure of blue power InGaN/GaN LEDs is caused by redistribution of In under action of injection currents between nano-scale regions of InGaNs alloy with non-equilibrium composition.
Journal ArticleDOI
Cytotoxic effects of halogen- and light-emitting diode-cured compomers on human pulp fibroblasts.
TL;DR: Compomers are potentially toxic to human pulp fibroblasts, and the type of curing unit may affect compomer toxicity.
Proceedings ArticleDOI
GaN-based flip-chip parallel micro LED array for visible light communication
TL;DR: In this paper, a flip-chip parallel micro light-emitting diode (μLED) array has been fabricated, and an injected current density up to 7900 A/cm2 has been achieved with a modulation bandwidth of ∼227 MHz.