Color conversion layers (CCLs) are crucial for various display and lighting technologies. While inorganic quantum dots (QDs) are commonly used, they suffer from instability and toxicity. This research explores the use of fluorescent organic nanoparticles (NPs), offering superior stability and water-processability. The study investigates the impact of ionic and non-ionic surfactants on the synthesis and properties of fluorescent organic NPs, achieving nearly 100% conversion of organic fluorophores into sub-micrometer particles (nano-dots). These nano-dots, demonstrating excellent color purity and conversion efficiency, outperform InP-based CCLs in terms of both efficiency and long-term stability.

Yeasin Khan, Soonjae Hwang, Ramanaskanda Braveenth, Young Hun Jung, Bright Walker, Jang Hyuk Kwon