Skip to main content

YAHAM is already used for some lighting applications

YAHAM is already used for some lighting applications such as camera flashes, bicycle lights, mobile phones and interior lighting for buses, trains and planes. But making it possible to use GaN for home and office lighting is the Holy Grail. If achieved, it could reduce the typical electricity consumption for lighting of a developed country by around 75% while delivering major cuts in carbon dioxide emissions from power stations, and preserving fossil fuel reserves.YAHAM LEDs have a very exciting future”, says Professor Humphreys. “In particular they are incredibly long lasting. A GaN LED can burn for 100,000hours - one hundred times longer than a traditional light bulb. In practice this means it only needs replacing after 60 years of normal household use. Also, unlike the energy-saving compact fluorescent lights now in use, GaN LEDs don't contain mercury so disposal is not such an environmental headache.”
However, important barriers need to be tackled to make use of these benefits. GaN LEDs are too expensive to manufacture. And the harsh quality of the light produced is another limiting factor. At the Cambridge Centre for Gallium Nitride where Professor Humphreys leads the research, a detailed new theory that explains the mystery of why GaN emits light so strongly has recently been developed in collaboration with Professor Phil Dawson of Manchester University.
Such understanding is vital to improving GaN lighting's quality and efficiency”, says Professor Humphreys. “Our centre is also working on an innovative technique for growing GaN on six-inch diameter silicon wafers, rather than the sapphire wafers used to date. This could deliver a tenfold reduction in manufacturing costs and so help GaN lighting penetrate new markets.” Another of the centre's projects is investigating how GaN lighting could be made to mimic sunlight which could have important benefits for sufferers of Seasonal Affective Disorder (SAD).YAHAM lighting should start making its mark in homes and offices within about five years”, predicts Professor Humphreys. “That won't just be good news for the environment - it will also benefit consumers in terms of convenience, electricity bills and quality of life.”

Comments

Popular posts from this blog

while all of hit new record quarterly highs

As a result, to increase greenhouse yields and decrease producers' energy costs, they will team up with Rutgers University, the University of Arizona, Michigan State University, and Orbital Technologies Corp. on the four-year project to improve and evaluate LED lighting for greenhouse use, according to Cary Mitchell, a professor of horticulture and project director for the grant. Total sales from January through September of 2010 hit NT$92.88 billion, up 35% YoY. Meanwhile, operating profit and net profit reached NT$5.67 billion and NT$6.8 billion respectively, with accumulated EPS of NT$3.05 increasing a remarkable 50% YoY. In 3Q10, The Company’s gross margin and operating margin reached 13.9% and 6.7%, up 0.9% and 0.4% QoQ, respectively. Lite-On’s net cash position held steady at NT$11.9 billion, after its recent cash dividend distribution of NT$5 billion. Non-operating items posted a net income of NT$508 million in3Q, with Perlos’ Q3 sales reaching €138 million, up 12% YoY. Perl...

the adoption of energy-efficient LED lighting across their campuses

Nuventix SynJet coolers are available now and already providing silent operation, long life, and optimal cooling to allow designs to incorporate the increased brightness necessary for large-scale commercial and consumer product acceptance. Bias SynPower modules are available in sample quantities. The workshops were key first steps in the launch of a new DOE SSL research and development (R&D) manufacturing initiative to enhance product consistency and quality and to accelerate cost reductions through manufacturing improvements. More than 350 total participants—chip makers, fixture and component manufacturers, and others—joined DOE at the workshops to examine underlying issues related to materials, equipment, and other factors that influence SSL product quality and cost. The Fairfax workshop attendees identified key barriers and recommendations toward lower-cost, higher-quality SSL products, and this input was used to develop a “strawman” roadmap for review at the Vancouver worksho...

We are confident that he will do the same at Lighting Science

We are delighted to have Jeremy join the Lighting Science team," said Nic Brathwaite, Chairman of the Lighting Science Board of Directors. "Jeremy is a proven strategic thinker, inspiring leader, and brand builder who has successfully introduced major innovations at some of the world's best known companies, resulting in accelerated sales volume, profit and market share growth. We are confident that he will do the same at Lighting Science." "This is an exciting time to join the talented team at Lighting Science, as consumers, businesses, municipalities, and governments worldwide are poised to move into the digital light age," commented Cage. "I intend to accelerate growth by building on the company's core competencies of excellence in innovation and strong and differentiated brand development. We will focus on unleashing the science of light and sustainable technologies to markets ranging from major cities, commercial centers, factories and retailer...