| 초록 |
Lead halide nanocrystals (NCs) perovskites, such as hybrid organic-inorganic APbBr3 [A=Cs, FA and MA] are promising solution-processed emitters for low-cost optoelectronics and photonics. Here, we report on a room-temperature method for synthesizing hybrid organic-inorganic perovskites that pure and FA-doped CsPbBr3 (FA=Formamidinium)(CH(NH2)2) NCs without the protection of inert gas. The perovskites NCs have been obtained with a size of ~ 22nm. The PL emission peaks of pure and FA-doped CsPbBr3 NCs shift from 514.5 to 518.5 with increase amount of doped FA ion and the bandwidth of peaks is narrow (full width at half maximum (FWHM) of 26~28 nm). In addition, we demonstrate the electrical and electroluminescence performance of solution-processed light-emitting diodes (LEDs) based on our perovskites NCs. These results demonstrate that the as-obtained colloidal perovskites NCs have a wide range applications in future high definition NCs displays and high-quality lightings. |
