Stability strategies and luminescent applications of low-dimensional metal halide perovskites

Traditional three-dimensional perovskite structures encounter significant challenges in achieving high-quality light emission. In contrast, low-dimensional metal halide perovskites (LDMHPs) have emerged as promising alternatives, owing to their exceptional luminescent properties. However, the stability of LDMHPs remains a critical issue, limiting their potential in light-emitting and display applications. This review first examines the luminescence mechanisms and instability factors associated with LDMHPs, then summarizes strategies to enhance the stability, offering insights for further improvement. Additionally, the specific applications of LDMHPs are discussed based on electroluminescence and photoluminescence. Finally, the challenges and future directions are explored for the commercialization of LDMHPs in luminescent or display devices. This review provides valuable guidance for ongoing researches in this field.