Development of next-generation perovskite LED source technology capable of implementing natural colors
A team led by Professor Im Sang-hyuk develops high-purity red, green, and blue quantum dots featuring a luminous line width of less than 20nm Published as a cover paper in Cell Reports Physical Science



▲ From left: Heo Jin-hyuck, research professor (Korea University, first author), Park Jin-kyoung, doctoral student (Korea University, first author), and Im Sang-hyuk, professor (Korea University, corresponding author)

The research team of Professor Im Sang-hyuk of the Department of Chemical and Biological Engineering at the College of Engineering developed the world's first high-purity red, green, and blue perovskite quantum dot synthesis technology featuring a line width of 20 nm or less to implement a next-generation perovskite LED capable of realizing natural colors. The research was published as a cover paper in the September 2nd (local time) issue of “Cell Reports Physical Science,” the sister magazine of Cell, a global international academic journal.

* Paper Title : Full color spectrum coverage by high colour-purity perovskite nanocrystal light emitting diodes
* Author Information: Heo Jin-hyuck, research professor (Korea University, first author), Park Jin-kyoung, doctoral student (Korea University, first author), Im Sang-hyuk, professor (Korea University, corresponding author)

The FPDs (Flat Panel Displays) used in smartphones and TVs are evolving from LCDs (Liquid Crystal Displays) to OLEDs (Organic Light Emitting Displays) and QLEDs (Quantum dot LEDs). However, their luminous line width is 30 nm or more, with the drawback that the color image viewed by the eye cannot be accurately implemented on the display. Therefore, to implement natural colors, the development of a new luminous body featuring a narrow luminous line width has been necessary.
* Perovskite: The crystal structure of minerals discovered by the Russian scientist, Lev Perovski