Strong yellow emission of ZnO hollow nanospheres fabricated using polystyrene spheres as templates
| Autor: | Zhiqiang Zu, Zhigang Zang, Yangfu Zeng, Xiaofeng Zeng, Xiaosheng Tang, Weiwei Chen, Mengqing Wen |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Polystyrene spheres
Materials science Photoluminescence Mechanical Engineering Nanotechnology medicine.disease_cause chemistry.chemical_compound Template chemistry Chemical engineering Mechanics of Materials medicine lcsh:TA401-492 General Materials Science lcsh:Materials of engineering and construction. Mechanics of materials Polystyrene Absorption (electromagnetic radiation) High absorption Ultraviolet Wurtzite crystal structure |
| Zdroj: | Materials & Design, Vol 84, Iss, Pp 418-421 (2015) |
| ISSN: | 0264-1275 |
| Popis: | ZnO hollow nanospheres were fabricated using polystyrene (PS) microspheres as templates were demonstrated in this paper. The structures and morphologies of obtained products were characterized by XRD, FESEM and TEM. The results revealed that ZnO hollow nanospheres possess a hexagonal wurtzite structure with a diameter around 450–500 nm. Ultraviolet–visible (UV–vis) analysis showed that ZnO hollow nanospheres had high absorption in the ultraviolet region and low absorption in the visible region. Room temperature photoluminescence (PL) spectrum showed a weak UV emission at 380 nm and a strong and broad yellow emission centered at 550 nm. The formation mechanism of hollow structure was also investigated. Keywords: ZnO hollow nanospheres, Yellow emission, Polystyrene spheres |
| Databáze: | OpenAIRE |
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