Synthesis and Characterization of Novel Multipods-Branched Cd-Se-S Micro-/Nano-Structures
| Autor: | Zhi Jian Peng, Hong Li, Cheng Biao Wang, Yu Zhang, Xiu Li Fu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Micro nano General Materials Science Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 0210 nano-technology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Characterization (materials science) |
| Zdroj: | Solid State Phenomena. 281:819-824 |
| ISSN: | 1662-9779 |
| DOI: | 10.4028/www.scientific.net/ssp.281.819 |
| Popis: | Novel multipods-branched Cd-Se-S micro-/nanostructures (MNSs) were successfully prepared in a tube furnace by thermal evaporation under atmospheric pressure through using high-purity CdS and CdSe mixture powder with a molar ratio of 1:1 as evaporation source, high-purity Ar gas as carrier and protective gas, and mica wafer as substrate. Under the optimum condition, the evaporation temperature was 1100 °C, Ar gas flow rate was 200 sccm, and the distance between the evaporation source and substrate was 22 cm. The microstructure examination revealed that the length of the obtained branches was up to tens of microns and the diameter of the branches was of a few microns. The composition and crystal structure analyses indicated that, the chemical composition of the multipods-branched Cd-Se-S MNSs was CdSe0.86S0.14, which had a hexagonal structure and good crystallinity. The photoluminescence spectrum at room temperature displays an intrinsic emission peak around 620 nm. In addition, their growth might be controlled by a vapor-solid mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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