Adv. Funct. Mater.: Domain Distribution Management of Quasi-2D Perovskites toward High-Performance Blue Light-Emitting Diodes

Title：

Domain Distribution Management of Quasi-2D Perovskites toward High-Performance Blue Light-Emitting Diodes

Authors：

Yu Xia, Yu-Han Li, Zhao-Kui Wang*, and Liang-Sheng Liao

Institution：

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China

Abstract：

Quasi-2D perovskites, as one of the promising materials applied in perovskite light-emitting diodes (PeLEDs), have attracted great attention for their  superior semiconductor properties. The inherent multiquantum well structure can induce a strong confinement effect, which is especially suitable for blue emission. However, compared to their green counterparts, blue emitters constructed from quasi-2D perovskites are more sensitive to n domain distribution (where n represents the number of PbX₆ inorganic layers). Suffering from inefficient domain distribution management, blue PeLEDs now face a variety of negative issues, including color instability, multipeak emission, and poor fluorescence yield. In this review, the development of blue PeLEDs and the optical properties of quasi-2D perovskites are overviewed. Then, a classification and summary of strategies for domain distribution management are proposed. Finally, the challenges and potential directions of domain distribution management in quasi-2D perovskites are summarized. This review is expected to provide a comprehensive perspective and reference on domain distribution management toward efficient blue quasi-2D PeLEDs.

IF：

19.924

Link：

https://onlinelibrary.wiley.com/doi/10.1002/adfm.202303423