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InGaN quantum wells
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Indium Gallium Nitride Solar Cells with Positive Temperature Coefficient
Sep 20, 2016Researchers in China have developed indium gallium nitride (InGaN) photovoltaic devices that increase in efficiency with temperature up to 423K [Zhaoying Chen et al, Appl. Phys. Lett., vol109, p062104, 2016]. "The positive efficiency ...
Tags: InGaN solar cells InGaN, MOCVD, positive temperature coefficient
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Monolithic Band-Engineered Semi-Polar White Light-Emitting Diode
Aug 12, 2016University of California Santa Barbara (UCSB) in the USA has developed a monolithic white light-emitting diode (LED) with blue light produced by electrical pumping, and green/'red' by optical pumping from the blue source [S. J. Kowsz et al, ...
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Dependence of Efficiency Droop on Carrier Density in Non-Polar Samples
Jul 16, 2016The University of Manchester and the University of Cambridge in the UK have been comparing efficiency droop in low-temperature photoluminescence (PL) experiments on non-polar m-plane and polar c-plane indium gallium nitride (InGaN) quantum ...
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Gallium Nitride Nano-Sized LEDs
Apr 11, 2016In 2014, the Nobel Prize in physics was awarded for the discovery of the gallium-nitride-based blue-light LED and its use for new, efficient LED-based white lamps. The development efforts in this field, however, do not stop there. The ...
Tags: LED, Nobel Prize
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Hole Injection From V-Pits Into Indium Gallium Nitride Quantum Wells
Nov 18, 2015Researchers at Nanchang University in China have been studying the effect of V-pits in indium gallium nitride (InGaN) light-emitting diodes (LEDs) on electroluminescence [Xiaoming Wu, Junlin Liu, and Fengyi Jiang, J. Appl. Phys., vol118, ...
Tags: InGaN quantum wells, InGaN LEDs, InGaN
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Auger Recombination Primary Cause of Efficiency Droop, Say Simulations
Aug 10, 2015Joachim Piprek, founder & president of NUSOD Institute LLC in the USA, has run simulations that he believes eliminate electron leakage as the primary cause of efficiency droop at high current in blue light-emitting diodes (LEDs) [Appl. ...
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Cambridge University Chooses Veeco's Propel MOCVD System
Apr 21, 2015Epitaxial deposition and process equipment maker Veeco Instruments Inc of Plainview, NY, USA says that the UK's University of Cambridge has ordered its Propel Power gallium nitride (GaN) metal-organic chemical vapor deposition (MOCVD) ...
Tags: GaN-on-Si, Power Electronics, LEDs
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BluGlass Has Increased Its Operational Capacity
Nov 19, 2013Australian Cleantech company BluGlass Limited has today announced that it has increased its operational capacity with the successful commissioning of a former production MOCVD system at the Company’s Silverwater facility. Using a low ...
Tags: Bluegalss, MOCVD System
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Academy Developed an Electrically Driven Color-Tunable Light-Emitting Diode
Nov 5, 2013Chinese Academy of Sciences' Semiconductor Lighting R&D Center at the Institute of Semiconductors in Beijing has developed an electrically driven color-tunable light-emitting diode (LED) based on indium gallium nitride (InGaN) quantum wells ...
Tags: LED, Electrical, Electronics, Semiconductor
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Researchers in Taiwan Have Used Nanopyramid Nitride Semiconductor Structures
Oct 9, 2013Researchers in Taiwan have used nanopyramid nitride semiconductor structures to explore long-wavelength green, olivine and amber light-emitting diode (LED) structures [Shih-Pang Chang, Optics Express, Vol. 21, p23030, 2013]. The team was ...
Tags: Nitride LEDs, Electronics
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Current Bright Blue LEDs Are Based on The Wide Band Gap Semiconductors GaN
Dec 20, 2012Current bright blue LEDs are based on the wide band gap semiconductors GaN (gallium nitride) and InGaN (indium gallium nitride). They can be added to existing red and green LEDs to produce the impression of white light, though white LEDs ...