The Japan Institute of Physical Chemistry and the Science and Technology Promotion Agency announced on the 25th that a research group that developed a deep ultraviolet light-emitting diode (LED) with a wavelength of 250 nm successfully achieved high output power of 15 mw for the first time in the world, and the electron injection efficiency was improved by 80. %.
High-power deep-ultraviolet light-emitting diodes with wavelengths between 220nm and 350nm are widely used in sterilization, water purification, medical treatment, high-density optical recording, high color rendering LED illumination, and high-speed decomposition of hazardous materials.
The aluminum gallium nitride material is considered to be the most ideal deep ultraviolet luminescent material. The research team achieved the highest in the world by reducing the dislocation density of the aluminum gallium nitride buffer layer and inserting the multi-quantum barrier as an electron block layer into the upper part of the quantum well luminescent layer. Power output. The research results broke the previous understanding that high-violet LEDs could not achieve high efficiency, and successfully achieved UV output power. At the same time, the multi-quantum barrier is also possible not only for the ultraviolet light-emitting element but also for the efficiency of the already practical blue LED, green LD, LED, and white LED lamp.
High-power deep-ultraviolet light-emitting diodes with wavelengths between 220nm and 350nm are widely used in sterilization, water purification, medical treatment, high-density optical recording, high color rendering LED illumination, and high-speed decomposition of hazardous materials.
The aluminum gallium nitride material is considered to be the most ideal deep ultraviolet luminescent material. The research team achieved the highest in the world by reducing the dislocation density of the aluminum gallium nitride buffer layer and inserting the multi-quantum barrier as an electron block layer into the upper part of the quantum well luminescent layer. Power output. The research results broke the previous understanding that high-violet LEDs could not achieve high efficiency, and successfully achieved UV output power. At the same time, the multi-quantum barrier is also possible not only for the ultraviolet light-emitting element but also for the efficiency of the already practical blue LED, green LD, LED, and white LED lamp.
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