Please use this identifier to cite or link to this item:
https://hdl.handle.net/10356/147028
Title: | Light-induced paramagnetism in colloidal Ag+-doped CdSe nanoplatelets | Authors: | Najafi, Arman Sharma, Manoj Delikanli, Savas Bhattacharya, Arinjoy Murphy, Joseph R. Pientka, James Sharma, Ashma Quinn, Alexander P. Erdem, Onur Kattel, Subash Kelestemur, Yusuf Kovalenko, Maksym V. Rice, William D. Demir, Hilmi Volkan Petrou, Athos |
Keywords: | Engineering::Materials | Issue Date: | 2021 | Source: | Najafi, A., Sharma, M., Delikanli, S., Bhattacharya, A., Murphy, J. R., Pientka, J., Sharma, A., Quinn, A. P., Erdem, O., Kattel, S., Kelestemur, Y., Kovalenko, M. V., Rice, W. D., Demir, H. V. & Petrou, A. (2021). Light-induced paramagnetism in colloidal Ag+-doped CdSe nanoplatelets. Journal of Physical Chemistry Letters, 12(11), 2892-2899. https://dx.doi.org/10.1021/acs.jpclett.1c00398 | Journal: | Journal of Physical Chemistry Letters | Abstract: | We describe a study of the magneto-optical properties of Ag+-doped CdSe colloidal nanoplatelets (NPLs) that were grown using a novel doping technique. In this work, we used magnetic circularly polarized luminescence and magnetic circular dichroism spectroscopy to study light-induced magnetism for the first time in 2D solution-processed structures doped with nominally nonmagnetic Ag+ impurities. The excitonic circular polarization (PX) and the exciton Zeeman splitting (ΔEZ) were recorded as a function of the magnetic field (B) and temperature (T). Both ΔEZ and PX have a Brillouin-function-like dependence on B and T, verifying the presence of paramagnetism in Ag+-doped CdSe NPLs. The observed light-induced magnetism is attributed to the transformation of nonmagnetic Ag+ ions into Ag2+, which have a nonzero magnetic moment. This work points to the possibility of incorporating these nanoplatelets into spintronic devices, in which light can be used to control the spin injection. | URI: | https://hdl.handle.net/10356/147028 | ISSN: | 1948-7185 | DOI: | 10.1021/acs.jpclett.1c00398 | Schools: | School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences |
Research Centres: | LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays | Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpclett.1c00398 | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | EEE Journal Articles |
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File | Description | Size | Format | |
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JPCL Manoj 2021 .pdf | Just accepted file | 1.04 MB | Adobe PDF | View/Open |
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