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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Zheng, Lan-Sun Zhou, Xi Kuang, Qin |
| Copyright Year | 2014 |
| Abstract | In this paper, ZnO/SnO2 core–shell micropyramids were successfully prepared via a chemical vapor deposition process that is based on the epitaxial growth of SnO2 on the surface of ZnO hexagonal micropyramids. Upon controlling appropriate deposition times and flow rates of the precursor, two epitaxial growth modes of SnO2, i.e. a continuous thick film and well-arranged one-dimensional nanostructures were observed in the ZnO/SnO2 core–shell micropyramids. Taking advantages of the difference in acid resistance between ZnO and SnO2, the as-prepared ZnO/SnO2 micropyramids were further converted into SnO2 hollow micropyramids with a facile acid-etching treatment. Structural analysis revealed that the lattice mismatch degree between epitaxial planes determines the preferential growth direction of the SnO2 epitaxial layer on the ZnO surface. Compared to the pristine ZnO template, interestingly, the ZnO/SnO2 core–shell micropyramids exhibited very strong green emission around 504 nm. Such enhanced green emission should be induced by high-density structural defects generated in the interfacial area during the epitaxial growth. |
| Starting Page | 186 |
| Ending Page | 192 |
| Page Count | 7 |
| File Format | HTM / HTML PDF |
| ISSN | 20521553 |
| Volume Number | 1 |
| Issue Number | 2 |
| Journal | Inorganic Chemistry Frontiers |
| DOI | 10.1039/c3qi00064h |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Chemical vapor deposition Acid Crystal structure |
| Content Type | Text |
| Resource Type | Article |
| Subject | Inorganic Chemistry |
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