Bright and Efficient CsSnBr Light-Emitting Diodes Enabled by Interfacial Reaction-Assisted Crystallization.

Tin-based perovskites are more environmentally friendly than their lead-based alternatives. Perovskite light-emitting diodes (PeLEDs) using iodide-based tin perovskites have achieved considerable advancements in efficiency. However, PeLEDs using bromide-based tin perovskites have not progressed as rapidly, primarily due to challenges in controlling their crystallization processes.

Shelf-Stable Green and Blue Quantum Dot Light-Emitting Diodes with High Efficiencies.

Quantum dot light-emitting diodes (QLEDs) are promising electroluminescent devices for next-generation display and solid-state lighting technologies. Achieving shelf-stable and high-performance QLEDs is crucial for their practical applications. However, the successful demonstration of shelf-stable QLEDs with high efficiencies is limited to red devices.

Ion Migration in Lead-Halide Perovskites: Cation Matters.

Metal halide perovskites exhibit remarkable properties for optoelectronic applications, yet their susceptibility to ion migration poses challenges for device stability. Previous research has predominantly focused on the migration of the halide ions. However, the migration of cations, which also has a significant influence on the device performance, is largely overlooked.

ZnO-Based Electron-Transporting Layers for Perovskite Light-Emitting Diodes: Controlling the Interfacial Reactions.

Perovskite light-emitting diodes (PeLEDs) provide new opportunities for cost-effective and large-area electroluminescent devices. It is of interest to use ZnO-based electron-transport layers (ETLs), which demonstrate superior performance in other solution-processed LEDs, in PeLEDs. However, the notorious deprotonation reaction between ZnO and perovskite casts doubt on the long-term stability of PeLEDs with ZnO-based ETLs.

Antioxidative Stannous Oxalate Derived Lead-Free Stable CsSnX (X=Cl, Br, and I) Perovskite Nanocrystals.

Lead-free CsSnX perovskite NCs are becoming a promising alternative to CsPbX (X=Cl, Br, I), but suffer from extremely poor stability. Herein, we highlight the significant effect of Sn precursors used in the synthesis on the stability of the resultant CsSnX NCs. A method is proposed for synthesizing CsSnX NCs using Cs CO , SnC O , and NH X as corresponding constituent precursors, wherein the ratio of reactants can be easily adjusted.