Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals
Incorporating magnetic ions into semiconductor nanocrystals has emerged as a prominent research field for manipulating spin-related properties. The magnetic ions within the host semiconductor experience spin-exchange interactions with photogenerated carriers and are often involved in the recombinati...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/173306 |
| _version_ | 1826130442922754048 |
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| author | Dehnel, Joanna Harchol, Adi Barak, Yahel Meir, Itay Horani, Faris Shapiro, Arthur Strassberg, Rotem de Mello Donegá, Celso Demir, Hilmi Volkan Gamelin, Daniel R. Sharma, Kusha Lifshitz, Efrat |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Dehnel, Joanna Harchol, Adi Barak, Yahel Meir, Itay Horani, Faris Shapiro, Arthur Strassberg, Rotem de Mello Donegá, Celso Demir, Hilmi Volkan Gamelin, Daniel R. Sharma, Kusha Lifshitz, Efrat |
| author_sort | Dehnel, Joanna |
| collection | NTU |
| description | Incorporating magnetic ions into semiconductor nanocrystals has emerged as a prominent research field for manipulating spin-related properties. The magnetic ions within the host semiconductor experience spin-exchange interactions with photogenerated carriers and are often involved in the recombination routes, stimulating special magneto-optical effects. The current account presents a comparative study, emphasizing the impact of engineering nanostructures and selecting magnetic ions in shaping carrier-magnetic ion interactions. Various host materials, including the II-VI group, halide perovskites, and I-III-VI2 in diverse structural configurations such as core/shell quantum dots, seeded nanorods, and nanoplatelets, incorporated with magnetic ions such as Mn2+, Ni2+, and Cu1+/2+ are highlighted. These materials have recently been investigated by us using state-of-the-art steady-state and transient optically detected magnetic resonance (ODMR) spectroscopy to explore individual spin-dynamics between the photogenerated carriers and magnetic ions and their dependence on morphology, location, crystal composition, and type of the magnetic ion. The information extracted from the analyses of the ODMR spectra in those studies exposes fundamental physical parameters, such as g-factors, exchange coupling constants, and hyperfine interactions, together providing insights into the nature of the carrier (electron, hole, dopant), its local surroundings (isotropic/anisotropic), and spin dynamics. The findings illuminate the importance of ODMR spectroscopy in advancing our understanding of the role of magnetic ions in semiconductor nanocrystals and offer valuable knowledge for designing magnetic materials intended for various spin-related technologies. |
| first_indexed | 2024-10-01T07:56:34Z |
| format | Journal Article |
| id | ntu-10356/173306 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:56:34Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1733062024-01-26T15:39:13Z Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals Dehnel, Joanna Harchol, Adi Barak, Yahel Meir, Itay Horani, Faris Shapiro, Arthur Strassberg, Rotem de Mello Donegá, Celso Demir, Hilmi Volkan Gamelin, Daniel R. Sharma, Kusha Lifshitz, Efrat School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences School of Materials Science and Engineering LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays The Photonics Institute Science::Physics Ions Magnetic Materials Incorporating magnetic ions into semiconductor nanocrystals has emerged as a prominent research field for manipulating spin-related properties. The magnetic ions within the host semiconductor experience spin-exchange interactions with photogenerated carriers and are often involved in the recombination routes, stimulating special magneto-optical effects. The current account presents a comparative study, emphasizing the impact of engineering nanostructures and selecting magnetic ions in shaping carrier-magnetic ion interactions. Various host materials, including the II-VI group, halide perovskites, and I-III-VI2 in diverse structural configurations such as core/shell quantum dots, seeded nanorods, and nanoplatelets, incorporated with magnetic ions such as Mn2+, Ni2+, and Cu1+/2+ are highlighted. These materials have recently been investigated by us using state-of-the-art steady-state and transient optically detected magnetic resonance (ODMR) spectroscopy to explore individual spin-dynamics between the photogenerated carriers and magnetic ions and their dependence on morphology, location, crystal composition, and type of the magnetic ion. The information extracted from the analyses of the ODMR spectra in those studies exposes fundamental physical parameters, such as g-factors, exchange coupling constants, and hyperfine interactions, together providing insights into the nature of the carrier (electron, hole, dopant), its local surroundings (isotropic/anisotropic), and spin dynamics. The findings illuminate the importance of ODMR spectroscopy in advancing our understanding of the role of magnetic ions in semiconductor nanocrystals and offer valuable knowledge for designing magnetic materials intended for various spin-related technologies. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Published version E.L. acknowledges the financial support from the Israel Science Foundation (Grant Nos. 2528/19 and 1045/19). E.L. and D.R.G. are also grateful for the financial assistance provided by the USA/Israel Binational Science Foundation (Grant Nos. 2016156 and 2020076). D.R.G. acknowledges partial support from the UW Molecular Engineering Materials Center (Grant No. DMR-1719797), an NSF Materials Research Science and Engineering Center. Additional support from the NSF (Grant No. DMR-1807394) to D.R.G. is gratefully acknowledged. H.V.D. gratefully acknowledges the support from the TUBA and TUBITAK Grant Nos. 121C266, 119N343, 120N076, and 121N395 as well as the Singapore Agency for Science, Technology and Research (A∗ STAR), MTC Program Grant No. M21J9b0085, and the Ministry of Education Singapore, under its Academic Research Fund Tier 1 (Grant No. MOE-RG62/20). 2024-01-24T08:02:59Z 2024-01-24T08:02:59Z 2023 Journal Article Dehnel, J., Harchol, A., Barak, Y., Meir, I., Horani, F., Shapiro, A., Strassberg, R., de Mello Donegá, C., Demir, H. V., Gamelin, D. R., Sharma, K. & Lifshitz, E. (2023). Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals. Journal of Chemical Physics, 159(7), 071001-. https://dx.doi.org/10.1063/5.0160787 0021-9606 https://hdl.handle.net/10356/173306 10.1063/5.0160787 37581419 2-s2.0-85168066245 7 159 071001 en M21J9b0085 MOE-RG62/20 Journal of Chemical Physics © 2023 The Author(s). Published under an exclusive license by AIP Publishing. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10.1063/5.0160787. application/pdf |
| spellingShingle | Science::Physics Ions Magnetic Materials Dehnel, Joanna Harchol, Adi Barak, Yahel Meir, Itay Horani, Faris Shapiro, Arthur Strassberg, Rotem de Mello Donegá, Celso Demir, Hilmi Volkan Gamelin, Daniel R. Sharma, Kusha Lifshitz, Efrat Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| title | Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| title_full | Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| title_fullStr | Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| title_full_unstemmed | Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| title_short | Optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| title_sort | optically detected magnetic resonance spectroscopic analyses on the role of magnetic ions in colloidal nanocrystals |
| topic | Science::Physics Ions Magnetic Materials |
| url | https://hdl.handle.net/10356/173306 |
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