2016-11-04

UCSB Finds Metal Impurities in Metal Recombination Centers Affect LED Efficiency

Using cutting-edge first-principles calculations, researchers at the University of California, Santa Barbara (UCSB) have demonstrated the mechanism by which transition metal impurities - iron in particular - can act as nonradiative recombination centers in nitride semiconductors. The work highlights that such impurities can have a detrimental impact on the efficiency of light-emitting diodes (LEDs) based on gallium nitride or indium gallium nitride.
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2016-04-07

UCSB Researcher Identifies Defects That Cause Inefficient LEDs

Using state-of-the-art theoretical methods, UCSB researchers have identified a specific type of defect in the atomic structure of a LED that results in less efficient performance. The characterization of these point defects could result in the fabrication of even more efficient, longer lasting LED lighting.
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2015-04-24

Shuji Nakamura Named as a 2015 Global Energy Prize Laureate

In recognition of his groundbreaking work in LED (light-emitting diode) technology, UC Santa Barbara materials professor Shuji Nakamura has been chosen as a 2015 Global Energy Prize Laureate. The prestigious Russian award “honors outstanding achievements in energy research and technology from around the world that are helping address the world’s various and pressing energy challenges.”
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2015-04-09

Shuji Nakamura: GaN-on-GaN Will Become the Next Generation LED Technology

The upcoming LED technology will be GaN-on-GaN LEDs, affirmed Nobel Laureate in Physics Shuji Nakamura and fellow colleague at University of California, Santa Barbara (UCSB) Professor Steven DenBaars at an exclusive forum hosted by Taiwanese leading chip LED manufacturer Epistar on Wednesday at the company headquarters in Hsinchu, Taiwan.
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2014-04-25

UCSB Sustainability Green Initiative Fund Includes LED Retrofit

Awarding efforts focused on everything from composting and energy conservation to lighting retrofits and weed management, UC Santa Barbara’s The Green Initiative Fund (TGIF) Grant Making Committee has selected its grant recipients for the 2013–2014 funding cycle.
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Osram Opto Semiconductors is expanding its Oslon Black family for the infrared range with six new automotive IREDs. The 850 nm versions are intended for exterior applications such as night vision, pedestrian protection, pre-field recognition a... READ MORE

Lumileds introduced the LUXEON CZ Color Line, a product line optimized to deliver maximum punch. “The LUXEON CZ features up to 48% higher punch than any other undomed color LED,” said Jennifer Holland, Product Line Direct... READ MORE