| 초록 |
Lead halide Perovskites (LHP) are promising optoelectronic and photonic materials for solar cells, sensors, photodetectors and light-emitting diodes (LEDs). Here, we report on simple and fast synthesis method of CsPbBr3 Perovsktite Quantum Dot (QD) at room-temperature without inert gas. It could be done only in 2hours from synthesizing Perovskites to final QD solution. In addition, We confirmed its stability at high temperature and in long-term storage. This is important point in oder to apply to industry for the future. Our CsPbBr3 perovskites QDs have been obtained with a size of ~ 11nm. The PL emission peak of CsPbBr3 QDs measured at 518nm with narrow FWHM (full width at half maximum of 19~21 nm). Furthermore, simple synthesis of CsPbCl3 and CsPbI3 was also realized by modifying method and adding some additives. And we fabricated LED device with our CsPbBr3 QD solution and further improved the performance of LED by inserting PMMA layer. |
