What is the core technology and development of UVLED?read count [260] release time：2020-03-16 22:28:00

　Then the chip acts as uv The core of the product, its development and quality will directly affect UVLED light curing The development speed and maturity of the industry. at the same time UVLED Manufacturers have also been pursuing the development of high performance.

The pursuit of high luminous efficiency has always been the driving force for the development of LED chip technology. One of the main technologies currently used to obtain high-efficiency and high-power LED chips It’s flip chip technology Among the substrate materials, sapphire and its supporting vertical structure substrate lift-off technology (LLO) and bonding technology will still dominate for a long time. Photonic crystal and AC LED technology will be technologies with great potential in the future.

In the near future, using new metal semiconductor structures, improving ohmic contact, improving crystal quality, improving electron mobility, the electrical injection efficiency can be 92%. By improving the shape of the LED chip, surface roughening and photonic crystals, high reflectivity mirrors, and transparent electrodes, the extraction efficiency can be 90%. At that time, the total efficiency of white LEDs can reach 52%.

With the improvement of UVLED light efficiency, on the one hand, the chips are getting smaller and smaller. In an epitaxial wafer of a certain size, more chips can be cut, thereby reducing the cost of a single chip and lowering the price. If 6mil appears. On the other hand, the power of a single chip is getting larger and larger, such as 3W, and will develop to 5W and 10W. This can reduce the number of chips used in power-demanding lighting and other applications and reduce the cost of the application system.