In recent years, tin halide PeLEDs have made significant breakthroughs in device efficiency, spectral tunability, and long-term operational stability. However, the easy oxidation of Sn²⁺ and rapid crystallization kinetics severely restrict their further development. The oxidation of Sn²⁺ and the rapid crystallization of the perovskite layer can lead to p-type doping characteristics and high defect density, thereby reducing photoluminescence quantum yield (PLQY) and causing charge injection imbalance. Therefore, a deep understanding of the oxidation and crystallization processes is key to advancing tin halide PeLEDs.
This review by Wang Jianpu and Huang Wei from Nanjing University of Technology discusses the fundamental properties of tin halide perovskites, analyzes the underlying mechanisms limiting device efficiency and stability, and introduces the latest advancements in achieving efficient and stable operation. Finally, it explores the challenges and future directions in developing efficient and stable optoelectronic devices.
Research Highlights
-
Environmentally Friendly and Efficient: Tin halide perovskites serve as a non-toxic alternative to lead-based perovskites, demonstrating environmental friendliness while significantly enhancing device efficiency (e.g., EQE of near-infrared PeLEDs reaching 11.6%) by suppressing Sn²⁺ oxidation and optimizing crystallization kinetics.
-
Spectral Tunability: By controlling the halide composition (Br/I/Cl) and dimensional engineering (3D/2D), a wide range of emission from near-infrared (947 nm) to blue light (467 nm) has been achieved, expanding application scenarios.
-
Stability Breakthrough: Through additive engineering and interface optimization, the operational lifetime of tin halide PeLEDs has been significantly extended (e.g., the half-life of CsSnI₃ devices reaching 39.5 hours @ 100 mA/cm²), laying the foundation for commercialization.
Tin-halide perovskites for light-emitting diodes
X. Li, Y. Ye, Y. Cao, D. Zhang, Y. Lin, J. Chang, L. Zhu, N. Wang, W. Huang and J. Wang, Chem. Soc. Rev., 2025, Advance Article , DOI: 10.1039/D5CS00340G
https://pubs.rsc.org/en/content/articlelanding/2025/cs/d5cs00340g
Academic Exchange QQ Group
Zhiguang Valley Photovoltaic Device Academic QQ Group: 641345719
Perovskite Industry-Education Integration Exchange @ Zhiguang Valley (WeChat Group): Please add the editor’s WeChat
To strengthen research cooperation, we have specially opened aPerovskite Science and Technology Innovation Cooperation professional research exchange WeChat group.How to join the WeChat group:Add the editor’s WeChatpvalley2024,pvalley2019, note:Name – Institution – Research Direction (without a note, please forgive us for not passing), reviewed by the editor before being invited to join the group.
