Hot-injection and ultrasonic irradiation syntheses of Cs2SnI6 quantum dot using Sn long-chain amino-complex
| Autor: | Taro Toyoda, Tsuguo Koyanagi, Hiroshi Segawa, Gaurav Kapil, Takurou N. Murakami, Shuzi Hayase, Qin Shen, Yuhei Ogomi, Kenji Yoshino |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Analytical chemistry chemistry.chemical_element Bioengineering 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences chemistry Nanocrystal Quantum dot Modeling and Simulation Particle General Materials Science Nanometre Thermal stability Particle size 0210 nano-technology Tin Perovskite (structure) |
| Zdroj: | Journal of Nanoparticle Research. 22 |
| ISSN: | 1572-896X 1388-0764 |
| DOI: | 10.1007/s11051-020-04787-w |
| Popis: | Lead (Pb) perovskites can be synthetically modified to form colloidal nanocrystals which exhibit remarkable optoelectronic properties in the various fields such as light-emitting devices, flexible electronics, and photodetectors. However, because of the toxicity issue of Pb, nanocrystals of Pb free such as tin (Sn)-based perovskites have got attention. In the present work, we have selected the Sn-based perovskite, Cs2SnI6, owing to the high air and thermal stability. Quantum dots of Cs2SnI6 were prepared by using two methods, namely the hot-injection method and the ultrasonic irradiation method. The difference between Cs2SnI6 particles generated by these two methods was discussed. The particles synthesized by using the hot-injection method were less than 10 nm in size and were aggregated structure due to particle tight-binding energy. On the other hand, the particles by using the ultrasonic irradiation method gave a mono-dispersed solution. The particle size was from several ten nanometers to several hundred nanometers. |
| Databáze: | OpenAIRE |
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