Perovskite Quantum Dots for the Next-Generation Displays: Progress and Prospect

The "Nobel Prize in Chemistry 2023" is awarded to Moungi G. Bawendi, Louis E. Brus, and Alexey I. Yekimov for discovering and synthesizing Quantum Dots (QDs). Colloidal QDs possess fascinating size-, morphological-, composition-, and assembly-tunable electronic and optical properties, which makes them star materials for various optoelectronic applications, especially as luminescent materials for next-generation wide color gamut ultra-high-definition displays. Perovskite QDs (PQDs) have gained widespread attention in recent years. In less than ten years, research on perovskite-related materials and devices has basically been perfected in terms of quantum yield and external quantum efficiency (EQE). However, on the eve of its industrial application, some key technical indicators and technical processes need to be met and resolved. The development and transformation of QD materials and then focuses on the progress of luminescence linewidth and EQE of the PQD light-emitting diode. Finally, several application avenues are reviewed for PQDs, and some challenges and opportunities in the field are proposed. This review starts with the development and transformation of colloidal quantum dot materials and then focuses on the progress of luminescence linewidth and external quantum efficiency (EQE) of colloidal perovskite quantum dot light-emitting diodes (QLEDs. Finally, several application avenues are reviewed for perovskite quantum dots, and some challenges and opportunities in the field are proposed. image