Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance
Upconversion rare-earth nanomaterials (URENs) possess highly efficient near-infrared (NIR), e.g., 980 nm, laser absorption and unique energy upconversion capabilities. On the other hand, graphene and its derivatives, such as graphene oxide (GO), show excellent performance in optical limiting (OL); h...
| Main Authors: | , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/96680 http://hdl.handle.net/10220/10374 |
| _version_ | 1826127075910615040 |
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| author | Ma, Jan Yang, Yanhui Wei, Wei He, Tingchao Teng, Xue Wu, Shixin Ma, Lin Zhang, Hua Chen, Hongyu Han, Yu Sun, Handong Huang, Ling |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Ma, Jan Yang, Yanhui Wei, Wei He, Tingchao Teng, Xue Wu, Shixin Ma, Lin Zhang, Hua Chen, Hongyu Han, Yu Sun, Handong Huang, Ling |
| author_sort | Ma, Jan |
| collection | NTU |
| description | Upconversion rare-earth nanomaterials (URENs) possess highly efficient near-infrared (NIR), e.g., 980 nm, laser absorption and unique energy upconversion capabilities. On the other hand, graphene and its derivatives, such as graphene oxide (GO), show excellent performance in optical limiting (OL); however, the wavelengths of currently used lasers for OL studies mainly focus on either 532 or 1064 nm. To design new-generation OL materials working at other optical regions, such as the NIR, a novel nanocomposites, GO–URENs, which combines the advantages of both its components, is synthesized by a one-step chemical reaction. Transmission electron microscopy, X-ray diffraction, infrared spectroscopy, and fluorescence studies prove that the α-phase URENs uniformly attach on the GO surface via covalent chemical bonding, which assures highly efficient energy transfer between URENs and GO, and also accounts for the significantly improved OL performance compared to either GO or URENs. The superior OL effect is also observed in the proof-of-concept thin-film product, suggesting immediate applications in making high-performance laser-protecting products and optoelectronic devices. |
| first_indexed | 2024-10-01T07:03:09Z |
| format | Journal Article |
| id | ntu-10356/96680 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:03:09Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/966802020-06-01T10:21:08Z Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance Ma, Jan Yang, Yanhui Wei, Wei He, Tingchao Teng, Xue Wu, Shixin Ma, Lin Zhang, Hua Chen, Hongyu Han, Yu Sun, Handong Huang, Ling School of Chemical and Biomedical Engineering School of Physical and Mathematical Sciences School of Materials Science & Engineering Upconversion rare-earth nanomaterials (URENs) possess highly efficient near-infrared (NIR), e.g., 980 nm, laser absorption and unique energy upconversion capabilities. On the other hand, graphene and its derivatives, such as graphene oxide (GO), show excellent performance in optical limiting (OL); however, the wavelengths of currently used lasers for OL studies mainly focus on either 532 or 1064 nm. To design new-generation OL materials working at other optical regions, such as the NIR, a novel nanocomposites, GO–URENs, which combines the advantages of both its components, is synthesized by a one-step chemical reaction. Transmission electron microscopy, X-ray diffraction, infrared spectroscopy, and fluorescence studies prove that the α-phase URENs uniformly attach on the GO surface via covalent chemical bonding, which assures highly efficient energy transfer between URENs and GO, and also accounts for the significantly improved OL performance compared to either GO or URENs. The superior OL effect is also observed in the proof-of-concept thin-film product, suggesting immediate applications in making high-performance laser-protecting products and optoelectronic devices. 2013-06-14T01:31:10Z 2019-12-06T19:33:53Z 2013-06-14T01:31:10Z 2019-12-06T19:33:53Z 2012 2012 Journal Article Wei, W., He, T., Teng, X., Wu, S., Ma, L., Zhang, H., et al. (2012). Nanocomposites of Graphene Oxide and Upconversion Rare-Earth Nanocrystals with Superior Optical Limiting Performance. Small, 8(14), 2271-2276. 1613-6810 https://hdl.handle.net/10356/96680 http://hdl.handle.net/10220/10374 10.1002/smll.201200065 en Small © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. |
| spellingShingle | Ma, Jan Yang, Yanhui Wei, Wei He, Tingchao Teng, Xue Wu, Shixin Ma, Lin Zhang, Hua Chen, Hongyu Han, Yu Sun, Handong Huang, Ling Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance |
| title | Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance |
| title_full | Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance |
| title_fullStr | Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance |
| title_full_unstemmed | Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance |
| title_short | Nanocomposites of graphene oxide and upconversion rare-earth nanocrystals with superior optical limiting performance |
| title_sort | nanocomposites of graphene oxide and upconversion rare earth nanocrystals with superior optical limiting performance |
| url | https://hdl.handle.net/10356/96680 http://hdl.handle.net/10220/10374 |
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