Light-emitting diodes
Reads0
Chats0
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
More filters
Proceedings ArticleDOI
Study of high CRI white light-emitting diode devices with multi-chromatic phosphor
Min Zheng,Wen Ding,Feng Yun,Deyang Xia,Yaping Huang,Yukun Zhao,Weihan Zhang,Minyan Zhang,Maofeng Guo,Ye Zhang +9 more
TL;DR: In this article, the authors investigated the connection between the employment of multi-chromatic phosphor and CRI value for WLED devices by simulation, using the excitation and emission spectra of phosphors and surface source property of LED chips acquired from experiments.
Dissertation
Semiconductor Nanowires: Epitaxy and Applications
TL;DR: In this article, the epitaxial growth of nanowires and their applications were studied, and a single-electron transistor constructed from a heterostructured nanowire with an InAs island sandwiched between two InP barriers was demonstrated.
Journal ArticleDOI
Nanoparticle meta-grid for enhanced light extraction from light-emitting devices.
TL;DR: It is shown that introducing a meta-grid of sub-wavelength-sized plasmonic nanoparticles into existing semiconductor light-emitting-devices (LEDs) can lead to enhanced transmission of light across the LED-chip/encapsulant interface, which can be boosted up to ~99%, which is otherwise mere ~84% at normal incidence.
Proceedings ArticleDOI
Experimental characterization regarding two types of phosphor-converted white high-brightness LEDs: Low power and high power devices
Claudio R. B. S. Rodrigues,Pedro S. Almeida,Guilherme Marcio Soares,Joao M. Jorge,Danilo P. Pinto,Henrique A. C. Braga +5 more
TL;DR: In this article, an experimental photometrical analysis regarding two mainstreams inside the high-brightness LED family: the power devices, socalled high power LEDs, and the low power devices is presented.
Proceedings ArticleDOI
Accelerated life test for high-power white LED based on spectroradiometric measurement
TL;DR: In this article, the luminous flux degradation performance of high-power white LEDs was investigated at both the rated current of 350mA and a higher current of 500mA, where the average lifetime of the LEDs is 7057 hours at 350mA, and 3508 hours at 500mA.
References
More filters
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.
Journal ArticleDOI
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.