newsroom 3/9 posted
• Domestic researchers have developed a new compound semiconductor technology to replace gallium nitride (GaN) used in existing blue light LED semiconductors.
• Among them, blue light LED was first commercialized by Japanese scientists in the 1990s by developing a technique to make gallium nitride with high quality.
• KIST collaborators first developed a device technology that emits blue light with high efficiency using copper Iodide (CuI) Group 1-7 compound semiconductors synthesized from copper (Cu) and iodine (I).
• The team found that copper iodide semiconductors have blue light brightness and improved photoelectric efficiency, which are more than 10 times stronger than gallium nitride-based devices.
• In particular, gallium nitride is widely used in real life as a core material of smart phones, displays, electronics and high frequency devices as well as electric lamps.
• It has developed a material that can replace gallium nitride, a key material for the display and mining industries.




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