Blue low-threshold room-temperature stimulated emission from thermostable perovskite nanocrystals glasses through controlling crystallization
| Autor: | Sihao Huang, Weidong Xiang, Xiaojuan Liang, Mengfeifei Jin, Zeyu Zhang, Juan Du, Chenjing Quan, Zhengzheng Liu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Chalcogenide Cyan Analytical chemistry Halide 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention chemistry.chemical_compound Nanocrystal chemistry law 0103 physical sciences Materials Chemistry Ceramics and Composites Stimulated emission Crystallization 0210 nano-technology Stoichiometry Perovskite (structure) |
| Zdroj: | Journal of the European Ceramic Society. 41:1579-1585 |
| ISSN: | 0955-2219 |
| DOI: | 10.1016/j.jeurceramsoc.2020.10.026 |
| Popis: | Perovskite nanocrystals (NCs) can achieve blue stimulated emission readily by the halide stoichiometry mixing method compared with the traditional metal chalcogenide NCs. However, most perovskite materials can obtain stimulated emission only at low temperatures because nonradiative recombination associated with defects predominates at room temperature. Here, by adjusting the composition and controlling crystallization, a series of CsPbClxBr3−x NCs glasses with large particle size were prepared by traditional melt-quenching to overcome the obstacles, which demonstrated low-threshold stimulated emission from blue to cyan (blue: ∼1.02–0.55 mJ/cm2, cyan: ∼1.59–1.34 mJ/cm2) under two-photon excitation at room temperature. And the CsPbClxBr3-x NCs glasses showed excellent thermostability, which suggested a new opportunity for ultra-stable nonlinear photonics and lasers. |
| Databáze: | OpenAIRE |
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