Alkyl-Thiol Ligand-Induced Shape- and Crystalline Phase-Controlled Synthesis of Stable Perovskite-Related CsPb2Br5 Nanocrystals at Room Temperature
| Autor: | Aishuang Xiang, Zhengtao Deng, Longfei Ruan, Aifei Wang, Wei Shen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Materials science Nanowire Halide Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Tetragonal crystal system chemistry Nanocrystal Chemical engineering Phase (matter) General Materials Science Orthorhombic crystal system Physical and Theoretical Chemistry 0210 nano-technology Alkyl Perovskite (structure) |
| Zdroj: | The Journal of Physical Chemistry Letters. 8:3853-3860 |
| ISSN: | 1948-7185 |
| DOI: | 10.1021/acs.jpclett.7b01657 |
| Popis: | Controlled synthesis of colloidal all-inorganic lead halide perovskite semiconductor nanocrystals, such as CsPbBr3, with tunable size, shape, composition, and crystalline phase have recently attracted wide interest for photonic and optoelectronic applications. Herein, we report a new strategy for using alkyl-thiols to induce the transformation of CsPbBr3 to perovskite-related cesium lead halide (CsPb2Br5) with controlled morphology and a crystalline phase at room temperature. By rational tuning the ratios of the alkyl-thiol ligands to alkyl-amines or to alkyl-acids, the as-synthesized colloidal nanocrystals can be rationally controlled from orthorhombic crystalline-phase CsPbBr3 to tetragonal-phase CsPb2Br5 nanosheets and nanowires with high yield. Significantly, the tetragonal CsPb2Br5 nanowires and nanosheets have high stability in high-temperature and high-humidity environments. These findings may open new directions for large-scale synthesis of shape- and crystalline phase-controlled perovskite nanocr... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|