Magneto-optical studies of CdSe/CdMnS/CdS core/multi-shell colloidal nanoplatelets

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Magneto-optical studies of CdSeCdMnSCdS coremulti-shell colloidal nanoplatelets.pdf (1.32 MB)

Date

2016

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Source Title

Proceedings of SPIE Vol. 9931, Spintronics IX

Print ISSN

0277-786X

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SPIE

Volume

9931

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Pages

1 - 10

Language

English

Type

Conference Paper

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Abstract

We studied the photoluminescence (PL)) from CdSe/CdMnS/CdS core/multi-shell colloidal nanoplatelets, a versatile platform to study the interplay of optical properties and nanomagnetism. The photoluminescence (PL) exhibits σ+ polarization in the applied magnetic field. Our measurement detects the presence of even a single magnetic monolayer shell. The PLL consists of a higher and a lower energy component; the latter exhibits a circular polarization peak. The time-resolved PL (trPL) shows a red shift as function of time delay. At early (later) times the trPL spectra coincide with the high (low) energy PL component. A model is proposed to interpret these results.

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Keywords

Core/shell, Diluted magnetic semiconductors, Magneto-optical spectroscopy, Nanoplatelets, Photoluminescence, Sp-d exchange interaction, Time-esolved spectroscopy

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http://hdl.handle.net/11693/37597

Published Version (Please cite this version)

https://doi.org/10.1117/12.2239725

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Scholarly Publications - Electrical and Electronics Engineering