mdgona22

led lamps sict requirements, so that makes it difficult to reduce the light output to meet these requirements. improved cold / hot factor of the latest led technology in the extension level, phosphor, die attachment and other aspects of progress, hot / cold factor is improved accordingly. currently, the market some of the high-power led heat / cold factor is 0.94. this means that led work at 100 , it will lose 6% of the standard luminous flux. figure 2 shows a typical and improved hot / cold factor function under the lower light output. figure 2, the improved hot / cold factor makes the led's brightness has been a marked improvement in heat / cold factor increased to improve the working temperature range of led, lighting designers have the opportunity to limit the led junction temperature of any work. performance comparison in many cases.led outdoor sign
extension of the general dislocation density gan thick film at 106 ~ 107cm-2 orders of magnitude, the current, the german company aixon hvpe method using the vertical growth of gan boules, access to 2 inches in diameter, high-7cm pear crystal defect density of pits 5 & time105cm-2, and the more the better crystal quality to the roots, down to the 104cm-2. more thick, pear-shaped crystal can not only produce more chips, but also further reduce the defect density material, so the use of boules biopsy is future preparation of high-quality gan subsates is one of choice. the past two years, ammonia calorimey (ammonothermal method) in the preparation of large-size gan single crystal body has made a breakthrough, breaking the crystal size limitations, much in the coming years to replace hvpe technology end. uc in a saturated u.s. ammonia environment successfully obtained .led open sign
extension of the general dislocation density gan thick film at 106 ~ 107cm-2 orders of magnitude, the current, the german company aixon hvpe method using the vertical growth of gan boules, access to 2 inches in diameter, high-7cm pear crystal defect density of pits 5 & time105cm-2, and the more the better crystal quality to the roots, down to the 104cm-2. more thick, pear-shaped crystal can not only produce more chips, but also further reduce the defect density material, so the use of boules biopsy is future preparation of high-quality gan subsates is one of choice. the past two years, ammonia calorimey (ammonothermal method) in the preparation of large-size gan single crystal body has made a breakthrough, breaking the crystal size limitations, much in the coming years to replace hvpe technology end. uc in a saturated u.s. ammonia environment successfully obtained .display signs