The achievement of red upconversion lasing for highly stable perovskite nanocrystal glasses with the assistance of anion modulation
| Autor: | Siu Fung Yu, Weidong Xiang, Xiaojuan Liang, Ying Fang, Mengfeifei Jin, Wei Gao, Ting Wang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Doping 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 01 natural sciences Atomic and Molecular Physics and Optics Photon upconversion 0104 chemical sciences Pulsed laser deposition law.invention Nanocrystal law Optoelectronics General Materials Science Electrical and Electronic Engineering Photonics 0210 nano-technology business Lasing threshold Perovskite (structure) |
| Zdroj: | Nano Research. 14:2861-2866 |
| ISSN: | 1998-0000 1998-0124 |
| DOI: | 10.1007/s12274-021-3364-5 |
| Popis: | Perovskite materials have received extensive attention as optical gain media. However, it is tough to realize lasing using such materials on account of the unstable structure of MAPbI3/CsPbI3 nanocrystals (NCs), and the propensity for mixed-halogen perovskites to undergo phase decomposition into bromine-rich and iodide-rich regions under intense laser irradiation. To solve this issue, we fabricated CsPbX3 (X = Br, I) NCs, which were embedded into a glassy matrix with high stability. In addition, by doping Br− ions into the CsPbI3 NCs to partially replace I− ions, the optical efficiency and the optical gain properties were found to be significantly improved. Here, under 800 nm pulse laser excitation, red random lasing was realized with the assistance of such anion modulation. Moreover, we demonstrate that the perovskite NCs glasses (PNG) show strong water stability after immersion in water for one week, seeding a promise for application in high-definition (HD) displays and photonic devices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink