Surface eu-treated ZnO nanowires with efficient red emission
The structural and optical properties of post surface Eu-treated ZnO nanowires (NWs) have been investigated systematically. It is found that the Eu3+ ions are in the Eu2O3-like state located at the surface of ZnO NWs. Sharp intense red emissions in the range of 580−650 nm due to the intra-4f transit...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2011
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| Online Access: | https://hdl.handle.net/10356/94084 http://hdl.handle.net/10220/7425 |
| _version_ | 1811692345714802688 |
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| author | Xiao, F. Liu, B. Gurzadyan, Gagik G. Chen, Rui Shen, Yiqiang Dong, Zhili Sun, Xiaowei Sun, Handong |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Xiao, F. Liu, B. Gurzadyan, Gagik G. Chen, Rui Shen, Yiqiang Dong, Zhili Sun, Xiaowei Sun, Handong |
| author_sort | Xiao, F. |
| collection | NTU |
| description | The structural and optical properties of post surface Eu-treated ZnO nanowires (NWs) have been investigated systematically. It is found that the Eu3+ ions are in the Eu2O3-like state located at the surface of ZnO NWs. Sharp intense red emissions in the range of 580−650 nm due to the intra-4f transition of Eu3+ ions are observed from the sample. The temperature-dependent photoluminescence (PL) measurement shows that the intensity of the Eu3+ ions emission is related to the near-band-edge (NBE) emission of ZnO NWs, indicating direct energy transfer from ZnO to Eu3+ ions. Finally, the time-resolved PL measurement was carried out, and the roles played by the Eu2O3-like layers are discussed in detail. It is found that the Eu2O3 layers not only suppress the deep level emission (DLE) in ZnO NWs but also provide efficient energy trap centers supporting the direct energy transfer from ZnO to Eu3+ ions. |
| first_indexed | 2024-10-01T06:34:19Z |
| format | Journal Article |
| id | ntu-10356/94084 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:34:19Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | ntu-10356/940842020-06-01T10:26:33Z Surface eu-treated ZnO nanowires with efficient red emission Xiao, F. Liu, B. Gurzadyan, Gagik G. Chen, Rui Shen, Yiqiang Dong, Zhili Sun, Xiaowei Sun, Handong School of Materials Science & Engineering DRNTU::Engineering::Materials::Photonics and optoelectronics materials The structural and optical properties of post surface Eu-treated ZnO nanowires (NWs) have been investigated systematically. It is found that the Eu3+ ions are in the Eu2O3-like state located at the surface of ZnO NWs. Sharp intense red emissions in the range of 580−650 nm due to the intra-4f transition of Eu3+ ions are observed from the sample. The temperature-dependent photoluminescence (PL) measurement shows that the intensity of the Eu3+ ions emission is related to the near-band-edge (NBE) emission of ZnO NWs, indicating direct energy transfer from ZnO to Eu3+ ions. Finally, the time-resolved PL measurement was carried out, and the roles played by the Eu2O3-like layers are discussed in detail. It is found that the Eu2O3 layers not only suppress the deep level emission (DLE) in ZnO NWs but also provide efficient energy trap centers supporting the direct energy transfer from ZnO to Eu3+ ions. 2011-12-20T04:52:35Z 2019-12-06T18:50:25Z 2011-12-20T04:52:35Z 2019-12-06T18:50:25Z 2010 2010 Journal Article Chen, R., Shen, Y., Xiao, F., Liu, B., Gurzadyan, G. G., Dong, Z. L., Sun, X., Sun, H. D. (2010). Surface eu-treated ZnO nanowires with efficient red emission. The journal of physical chemistry C, 114 (42), 18081–18084. https://hdl.handle.net/10356/94084 http://hdl.handle.net/10220/7425 10.1021/jp106179q en Journal of physical chemistry C © 2010 American Chemical Society |
| spellingShingle | DRNTU::Engineering::Materials::Photonics and optoelectronics materials Xiao, F. Liu, B. Gurzadyan, Gagik G. Chen, Rui Shen, Yiqiang Dong, Zhili Sun, Xiaowei Sun, Handong Surface eu-treated ZnO nanowires with efficient red emission |
| title | Surface eu-treated ZnO nanowires with efficient red emission |
| title_full | Surface eu-treated ZnO nanowires with efficient red emission |
| title_fullStr | Surface eu-treated ZnO nanowires with efficient red emission |
| title_full_unstemmed | Surface eu-treated ZnO nanowires with efficient red emission |
| title_short | Surface eu-treated ZnO nanowires with efficient red emission |
| title_sort | surface eu treated zno nanowires with efficient red emission |
| topic | DRNTU::Engineering::Materials::Photonics and optoelectronics materials |
| url | https://hdl.handle.net/10356/94084 http://hdl.handle.net/10220/7425 |
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