真空热蒸发制备高效钙钛矿发光二极管：材料策略与界面工程优化

Abstract Metal halide perovskite light-emitting diodes (PeLEDs) are attracting intense academic and industrial interest for next-generation high-definition displays because of their readily tunable emission and the cost advantages offered by solution processability.Spin-coating is currently the most widely used route to deposit perovskite films yet it suffers from high-boiling toxic solvents uncontrolled crystallization and poor large-area uniformity.Vacuum thermal evaporation circumvents these limitations it is solvent-free environmentally benign allows angstrom-level thickness and rate control and is fully compatible with existing organic light-emitting diodes (OLED) fabrication lines making it the most promising technique for scaling PeLED to large-area panels.Here we review the three prin cipal vacuum thermal evaporation protocols-single evaporation sequential evaporation and co-evaporation-used to deposit perovskite films.We then summarize recent strategies and progress in achieving high-performance red