Large‐scale uniform fabrication and morphology control of ultrafine perovskite nanocrystals
| Autor: | Limin Guo, Ke Bi, Zhengda He, Meihua Bi, Yanan Hao |
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| Rok vydání: | 2019 |
| Předmět: |
Morphology (linguistics)
Fabrication Materials science Biomedical Engineering Bioengineering 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Nanomaterials Morphology control Crystal Nanolithography Chemical engineering Nanocrystal General Materials Science 0210 nano-technology Perovskite (structure) |
| Zdroj: | Micro & Nano Letters. 14:289-292 |
| ISSN: | 1750-0443 |
| DOI: | 10.1049/mnl.2018.5559 |
| Popis: | Nanomaterials are playing more and more important roles in modern industry, while the large-scale fabrication and dispersibility still need to be addressed. This report explores the uniform fabrication and morphology control of ultrafine BaTiO 3 (BT) nanocrystals using a `TEG-sol' method. By varying the reactant concentration, the obtained product sols, Ba/Ti ratios, structure and morphology of the nanocrystals are investigated. The results reveal that under low concentrations (0.4-0.8 mol/L), transparent sols with uniform BT nanocrystals are obtained. Increasing the concentration to higher than 1.0 mol/L, BT precipitates with abnormal large crystals are obtained. Moreover, the Ba/Ti ratio variation further reveals that the surface organics are critical to the control of crystal size and morphology. This investigation is potential to be extended to the synthesis of various perovskite nanocrystals. |
| Databáze: | OpenAIRE |
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