Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions
In this work, we study the effect of the average shortest interaction distance between zinc oxide nanocrystals (ZnO-nc) and Europium (Eu3+) ions and between two Eu3+ ions in the energy transfer process between ZnO-nc and Eu3+ ions embedded in a SiO2 matrix fabricated by a combination of sol-gel and...
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| Format: | Journal Article |
| Language: | English |
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2019
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| Online Access: | https://hdl.handle.net/10356/82283 http://hdl.handle.net/10220/47506 |
| _version_ | 1811684056591499264 |
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| author | Mangalam, Vivek Pita, Kantisara |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Mangalam, Vivek Pita, Kantisara |
| author_sort | Mangalam, Vivek |
| collection | NTU |
| description | In this work, we study the effect of the average shortest interaction distance between zinc oxide nanocrystals (ZnO-nc) and Europium (Eu3+) ions and between two Eu3+ ions in the energy transfer process between ZnO-nc and Eu3+ ions embedded in a SiO2 matrix fabricated by a combination of sol-gel and the sputtering technique. A detailed model to calculate the two interaction distances based on the ratio of Zn, Si and Eu3+ ions in the samples and using the density and molecular mass of ZnO and SiO2 is presented. Based on these calculations together with the photoluminescence emission from the samples, it is clearly shown that the energy transfer from ZnO-nc to Eu3+ ions is higher in samples with a shorter distance between the ZnO-nc and Eu3+ ions. The maximum red emission at 614 nm due to the efficient energy transfer from ZnO-nc to Eu3+ was found in the sample with 5.11 nm distance between the ZnO-nc and Eu3+ ions. However, the red emission from the Eu3+ ions does not increase as the distance between the ZnO-nc and Eu3+ ions is reduced below 5.11 nm by increasing the Eu3+ concentration. This is due to the Eu3+ ion concentration quenching effect, where the distances between the Eu3+ ions become shorter than 0.57 nm, resulting in a migration of energy between the Eu3+ ions that is non-radiatively dissipated. It is also shown that the energy transfer from ZnO-nc to Eu3+ ions occur mostly due to the radiative energy transfer process when the interaction distance between the ZnO-nc and Eu3+ ions is 6.53 nm or greater. |
| first_indexed | 2024-10-01T04:22:34Z |
| format | Journal Article |
| id | ntu-10356/82283 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:22:34Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/822832020-03-07T14:02:38Z Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions Mangalam, Vivek Pita, Kantisara School of Electrical and Electronic Engineering Centre for OptoElectronics and Biophotonics DRNTU::Engineering::Electrical and electronic engineering Interaction Distance Energy Transfer In this work, we study the effect of the average shortest interaction distance between zinc oxide nanocrystals (ZnO-nc) and Europium (Eu3+) ions and between two Eu3+ ions in the energy transfer process between ZnO-nc and Eu3+ ions embedded in a SiO2 matrix fabricated by a combination of sol-gel and the sputtering technique. A detailed model to calculate the two interaction distances based on the ratio of Zn, Si and Eu3+ ions in the samples and using the density and molecular mass of ZnO and SiO2 is presented. Based on these calculations together with the photoluminescence emission from the samples, it is clearly shown that the energy transfer from ZnO-nc to Eu3+ ions is higher in samples with a shorter distance between the ZnO-nc and Eu3+ ions. The maximum red emission at 614 nm due to the efficient energy transfer from ZnO-nc to Eu3+ was found in the sample with 5.11 nm distance between the ZnO-nc and Eu3+ ions. However, the red emission from the Eu3+ ions does not increase as the distance between the ZnO-nc and Eu3+ ions is reduced below 5.11 nm by increasing the Eu3+ concentration. This is due to the Eu3+ ion concentration quenching effect, where the distances between the Eu3+ ions become shorter than 0.57 nm, resulting in a migration of energy between the Eu3+ ions that is non-radiatively dissipated. It is also shown that the energy transfer from ZnO-nc to Eu3+ ions occur mostly due to the radiative energy transfer process when the interaction distance between the ZnO-nc and Eu3+ ions is 6.53 nm or greater. MOE (Min. of Education, S’pore) Published version 2019-01-17T06:26:53Z 2019-12-06T14:52:28Z 2019-01-17T06:26:53Z 2019-12-06T14:52:28Z 2018 Journal Article Mangalam, V., & Pita, K. (2018). Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions. Optical Materials Express, 8(10), 3115-3132. doi:10.1364/OME.8.003115 https://hdl.handle.net/10356/82283 http://hdl.handle.net/10220/47506 10.1364/OME.8.003115 en Optical Materials Express © 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. 18 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Interaction Distance Energy Transfer Mangalam, Vivek Pita, Kantisara Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions |
| title | Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions |
| title_full | Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions |
| title_fullStr | Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions |
| title_full_unstemmed | Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions |
| title_short | Effect of the interaction distance on 614 nm red emission from Eu3+ ions due to the energy transfer from ZnO-nc to Eu3+ ions |
| title_sort | effect of the interaction distance on 614 nm red emission from eu3 ions due to the energy transfer from zno nc to eu3 ions |
| topic | DRNTU::Engineering::Electrical and electronic engineering Interaction Distance Energy Transfer |
| url | https://hdl.handle.net/10356/82283 http://hdl.handle.net/10220/47506 |
| work_keys_str_mv | AT mangalamvivek effectoftheinteractiondistanceon614nmredemissionfromeu3ionsduetotheenergytransferfromznonctoeu3ions AT pitakantisara effectoftheinteractiondistanceon614nmredemissionfromeu3ionsduetotheenergytransferfromznonctoeu3ions |