| 초록 |
Recently, perovskite light-emitting diodes (PeLEDs) have promoted considerable research interest as a next-generation LED that can replace the existing OLED and QLED due to the attractive properties of metal halide perovskite(MLH) materials such as outstanding carrier mobility, bandgap tunablity, and remarkable color purity. However, MLH has yet met the critical requirement for viable LED devices due to its inferior moisture stability. To remedy the disadvantage, quasi-2D perovskites, e.g. (PEA)2(MA)n-1PbnBr3n+1 have been proposed that evidenced improved humid-stability and tunable optoelectronic properties. In this respect, here, we show a generalized strategy to develop Br-based blue quasi-2D perovskites with enhanced stability and spectral tunability. By doping the inorganic cation to organic cation spacers, we establish a protocol to fine-tune the spectral range of the blue emissive perovskites which may open the pathway toward commercialized PeLEDs. |
