
准二维蓝光钙钛矿发光二极管的研究进展
Recent Advances in Quasi-Two-Dimensional Blue Perovskite Light- Emitting Diodes
蓝光钙钛矿发光二极管(PeLEDs)是钙钛矿全彩显示和白光照明技术快速发展的核心技术瓶颈。准二维钙钛矿可利用层数调控和量子限域效应实现蓝光发射,还可借助其疏水有机配体显著提升膜层和器件的稳定性,已成为钙钛矿领域的研究热点。本综述总结了准二维蓝光PeLEDs在组分工程、膜层工艺及器件优化方面的进展,分析了准二维蓝光PeLEDs面临的挑战,展望了效率提升途径,并概述了未来研究方向和解决方案。
Blue perovskite light-emitting diodes (PeLEDs) restrict the rapid development of full-color display and white lighting technology of perovskite. Quasi-two-dimensional (Q2D) perovskite enables to realize blue light emission via strict control on layer number and use of quantum confinement effect and can significantly improve the stability of perovskite film and PeLEDs by using hydrophobic organic ligands, which has gradually become a research hotspot in the field of perovskites. This review summarizes the research progress on Q2D blue PeLEDs from three aspects of component engineering, film process and device optimization, and analyzes the challenges faced by Q2D blue PeLEDs and the efficiency improvement approaches. At last, this paper envisages the future research direction and feasible solutions.
Contents
1 Introduction
2 Overview of quasi-two-dimensional perovskites
3 Research progress of quasi-two-dimensional blue perovskite light-emitting diodes
3.1 Component engineering
3.2 Film process optimization
3.3 Device structure optimization
4 Challenges faced by quasi-two-dimensional blue light-emitting perovskites
4.1 Photoluminescence quantum efficiency
4.2 Spectral stability
4.3 Phase purity
4.4 Charge injection efficiency and interface engineering
5 Conclusion and outlook
quasi-two-dimensional perovskites / blue light-emitting diodes / component engineering
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