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Title: Near-infrared emission from CdSe-based nanoplatelets induced by ytterbium doping
Authors: İzmir, Merve
Durmusoglu, Emek Goksu
Sharma, Manoj
Shabani, Farzan
Isik, Furkan
Delikanli, Savas
Sharma, Vijay Kumar
Demir, Hilmi Volkan
Keywords: Engineering::Materials::Nanostructured materials
Issue Date: 2023
Source: İzmir, M., Durmusoglu, E. G., Sharma, M., Shabani, F., Isik, F., Delikanli, S., Sharma, V. K. & Demir, H. V. (2023). Near-infrared emission from CdSe-based nanoplatelets induced by ytterbium doping. Journal of Physical Chemistry C, 127(8), 4210-4217.
Project: MOE-RG62/20 
Journal: Journal of Physical Chemistry C 
Abstract: Cadmium selenide (CdSe) nanoplatelets (NPLs) have attracted significant attention thanks to their favorable optical properties, including narrow emission linewidths, reduced Auger recombination, and a high absorption cross section. However, the photoluminescence (PL) quantum yield (QY) in the near-infrared (NIR) region is poor as compared to that in the visible region. Doping of metal ions is proven to be a successful strategy for inducing Stokes-shifted NIR emission. Here, we report the first account of the successful doping of ytterbium (Yb) into CdSe NPLs by a modified seeded-growth method. The successful incorporation of divalent Yb ions into CdSe NPLs resulted in an additional NIR emission apart from their excitonic emission. By optimizing the dopant concentration, we observed an impressive PL QY of ∼55% for these Yb-doped NPLs. Detailed elemental and optical characterizations were conducted to understand the emerging photophysical properties of these Yb-doped NPLs. These NIR-emitting lanthanide-doped CdSe NPLs might have applications in the next-generation bioimaging, night vision, and photodetection.
ISSN: 1932-7447
DOI: 10.1021/acs.jpcc.2c09075
Schools: School of Electrical and Electronic Engineering 
School of Physical and Mathematical Sciences 
School of Materials Science and Engineering 
Research Centres: The Photonics Institute 
LUMINOUS! Centre of Excellence for Semiconductor Lighting & Displays 
Rights: © 2023 The Author(s). Published by American Chemical Society. This is an open-access article distributed under the terms of the Creative Commons Attribution License.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles
MSE Journal Articles
SPMS Journal Articles

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