高效、稳定Ⅱ-Ⅵ族量子点发光二极管(LED)的研究进展

Research Progress on High-efficiency and Stable Ⅱ-Ⅵ Groug Quantum-Dot Light-Emitting Diodes

量子点通常具有核-壳型的基本结构,它的发光效率及色纯度高。因具有优异的性能和可控合成的优点,Ⅱ-Ⅵ族量子点在发光二极管(light-emitting diode,LED)中的应用研究最为丰富。为了制备高效、稳定的量子点LED,量子点的结构、器件结构和载流子传输层都需要进行设计和优化。如今,量子点LED的效率已接近Organic LED(OLED),但它的发展仍存在挑战。

Quantum-dots （QDs） usually show pure color and bright emission with a core-shell structure. In particular, Ⅱ-Ⅵ semiconductor QDs applied in light-emitting diodes （LEDs） are highlighted in this review for excellent performance and controllable synthesis. The structures of QD and LED, as well as charge transport materials, have to be designed and optimized for high external quantum efficiency （EQE）. As QD-LED effieiencies approach those of Organic LED （OLED）, the key challenges facing commercialization are addressed.