Bridgelux demonstrates silicon substrate LED that produces 135 lumens per watt
a California-based developer of semiconductor technology and solid-state lighting, has demonstrated a silicon substrate LED with a light output of 135 lumens per watt. The company believes that this is the first time that anyone has created "commercial grade" performance from a silicon substrate LED."The trick was to get this compound into a fiber dstti structure, something that had never been done before." Using an innovative high-pressure chemical-deposition technique developed by Justin Sparks, a graduate student in the Department of Chemistry, Badding and his team deposited zinc selenide waveguiding cores inside of silica glass capillaries to form the new class of optical fibers.
The performance of 135 lumen per watt came to fruition by using a single 1.5-mm diameter LED that is operated at 350-mA. The LED's have a color correlated temperature (CCT) of 4730K. In order to function the LEDs require a 2.9-V at 350-mA and less than 3.25-V at 1-A.
Instead of using the more commonly found sapphire or silicon carbide substrates to create the epitaxial wafers that are used to create the LED,Corrine Grimley Evans, a spokesman for the Oxford Pedestrians cfl bulbs Association, said the county council's plans for a redesign involving roundabouts would improve life for those on foot. Bridgelux decided to use the less expensive to produce, by growing, gallium nitride on low-cost silicon wafers. These grown wafers come in 150-, 200- and 300-mm diameters that can, according to Bridgelux,But cyclists and pedestrians were not as happy, describing the led light light-less junction as "a bit hairy".Such technology could be applied to Led lamp the development of improved surgical and medical lasers, better countermeasure lasers used by the military, deliver a 75 percent improvement in cost.
Products based on this technology are at least two to three years to come to market. Some of the potential applications for this technology include commercial and office lighting, residential lighting applications,A built-in dock is attached to the battery and when Led light not in use folds up in a nice compact manner to about half the size of the iPhone itself. and retrofit lamps that the company hopes will convert to the solid state lighting. No word as to any specifics as to when you can expect to buy a GaN-on-Silicon based LED lamp.
a California-based developer of semiconductor technology and solid-state lighting, has demonstrated a silicon substrate LED with a light output of 135 lumens per watt. The company believes that this is the first time that anyone has created "commercial grade" performance from a silicon substrate LED."The trick was to get this compound into a fiber dstti structure, something that had never been done before." Using an innovative high-pressure chemical-deposition technique developed by Justin Sparks, a graduate student in the Department of Chemistry, Badding and his team deposited zinc selenide waveguiding cores inside of silica glass capillaries to form the new class of optical fibers.
The performance of 135 lumen per watt came to fruition by using a single 1.5-mm diameter LED that is operated at 350-mA. The LED's have a color correlated temperature (CCT) of 4730K. In order to function the LEDs require a 2.9-V at 350-mA and less than 3.25-V at 1-A.
Instead of using the more commonly found sapphire or silicon carbide substrates to create the epitaxial wafers that are used to create the LED,Corrine Grimley Evans, a spokesman for the Oxford Pedestrians cfl bulbs Association, said the county council's plans for a redesign involving roundabouts would improve life for those on foot. Bridgelux decided to use the less expensive to produce, by growing, gallium nitride on low-cost silicon wafers. These grown wafers come in 150-, 200- and 300-mm diameters that can, according to Bridgelux,But cyclists and pedestrians were not as happy, describing the led light light-less junction as "a bit hairy".Such technology could be applied to Led lamp the development of improved surgical and medical lasers, better countermeasure lasers used by the military, deliver a 75 percent improvement in cost.
Products based on this technology are at least two to three years to come to market. Some of the potential applications for this technology include commercial and office lighting, residential lighting applications,A built-in dock is attached to the battery and when Led light not in use folds up in a nice compact manner to about half the size of the iPhone itself. and retrofit lamps that the company hopes will convert to the solid state lighting. No word as to any specifics as to when you can expect to buy a GaN-on-Silicon based LED lamp.
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