Simple fabrication of full-color perovskite LEDs

Perovskite nanoparticles is regarded as next-generation of optical materials that can achieve vivid colors even on very large screens. Besides, due to their high color purity and low cost advantages, it has also gained much interests in industry. A recent study, affiliated with UNIST has introduced a simple technique to extract the three primary colors (red, blue, green) from this material. This breakthrough has been led by Professor Jin Young Kim in the School of Energy and Chemical Engineering at UNIST. In the study, the research team introduced a simple technique that freely controls light emitting spectrums by adjusting the anion halides in perovskite materials. The key is to adjust the anion halides by simply dissolving them in solvents to achieve red, blue, and green lights. Application of this technique to LEDs can result in crystal-clear picture quality.