University of California Santa Barbara (UCSB) has been using limited area epitaxy (LAE) to improve the performance of lasers diodes (LDs) grown on free-standing semipolar (20-21) gallium nitride (GaN) substrates [Matthew T. Hardy et al, J. ...
University of California Santa Barbara (UCSB) and Fuji Electric Corp of America have been developing indium gallium nitride (InGaN) solar cell structures in efforts to extend the conversion efficiency of multi-junction photovoltaic (PV) ...
Tags: Nitride Barriers, Electrical
Soraa Inc of Fremont, CA, USA, which develops solid-state lighting technology built on 'GaN-on-GaN' (gallium nitride on gallium nitride) substrates, is to open a new semiconductor fabrication plant in Buffalo, NY. In partnership with the ...
Tags: GaN-on-GaN, LED, Electrical, Electronics
University of California Santa Barbara (UCSB) has developed semipolar (20-2-1) nitride semiconductor laser diodes (LDs) without using aluminium gallium nitride (AlGaN) as the cladding material for optical confinement [A. Pourhashemi et al, ...
Researchers at the University of California at Santa Barbara say that they have discovered how to formulate LED phosphors for better efficiency, while Cree has announced a licensing agreement with NNCrystal covering remote phosphor IP. A ...
Tags: Remote Technology, Lighting
"These guidelines should permit the discovery of new and improved phosphors in a rational rather than trial-and-error manner," said Ram Seshadri, a professor in the university's Department of Materials as well as in its Department of ...
Tags: Optimizing Phosphors, Lighting
By determining simple guidelines, researchers at UC Santa Barbara's Solid State Lighting & Energy Center (SSLEC) have made it possible to optimize phosphors –– a key component in white LED lighting –– allowing for ...
Soraa Inc of Fremont, CA, USA, which develops solid-state lighting technology built on 'GaN-on-GaN' (gallium nitride on gallium nitride) substrates, says that Jeff Parker has joined the firm as its new chief executive officer. According ...
Tags: Soraa GaN-on-GaN, LED, LED Lighting, Electrical, Electronics
ARPA-E Deputy Director Cheryl Martin today announced $27 million in funding from the Energy Department’s Advanced Research Projects Agency-Energy (ARPA-E) for 14 projects aimed at developing next-generation power conversion devices ...
University of California Santa Barbara has been exploring the use of laser diodes (LDs) in combination with phosphors as a means to produce white light [Kristin A. Denault et al, AIP Advances, vol3, p072107, 2013]. Commercial 'white' ...
Tags: Near-UV LD, Blue LD, LED, Electrical, Electronics
ARPA-E deputy director Cheryl Martin has announced $27m in funding from the US Department of Energy's (DOE) Advanced Research Projects Agency-Energy (ARPA-E) for 14 projects aimed at developing next-generation power conversion devices that ...
Tags: Electrical, Electronics
Researchers from the universities of California Santa Barbara (UCSB) and of New Mexico (UNM) have demonstrated semipolar nitride semiconductor blue and green laser diodes (LDs) with part of the upper cladding replaced by indium tin oxide ...
Tags: Iii-Nitride Lasers, Electrical
Electron leakage causes efficiency drop, or what's known as droop, when LEDs are operated at higher drive currents according to a research group at Rensselaer Polytechnic Institute. For more than a decade, the LED industry has sought to ...
Researchers at University of California, Santa Barbara (UCSB), in collaboration with colleagues at the Ecole Polytechnique in France, say they have conclusively identified Auger recombination as the mechanism that causes light emitting ...
Tags: Consumer Electronics, Electronics
Researchers at University of California, Santa Barbara, in collaboration with the école Polytechnique in Paris, France, say that they have identified Auger recombination as the mechanism that causes nitride light-emitting diodes ...
Tags: LED light, LED, light, Electronics