Challenges and Opportunities for the Blue Perovskite Quantum Dot Light‐Emitting Diodes

Abstract

Perovskite quantum dots (PQDs), as the promising materials for the blue light‐emitting diodes (LEDs), own huge advantages as ultra‐high color purity, flexibility and whole‐spectrum tunability. Through dimensional and compositional engineering, PQD‐LEDs have shown superiority in deep‐blue light emission. However, compared with the fast development of red and green PeLEDs, the electroluminescent performance of PQD‐LEDs has faced more obstacles. In this review, we aim to explore and state the uniqueness and the possible solutions for the bottleneck problems of the PQD‐LEDs.