Kumar, Pawan and Singh, Satbir and Singh, V. N. and Singh, Nidhi and Gupta, R. K. and Gupta, Bipin Kumar (2017) Experimental observation of spatially resolved photoluminescence intensity distribution in dual mode upconverting nanorod bundles. Scientific Reports, 7 (42515). ISSN 2045-2322

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Abstract

A novel method for demonstration of photoluminescence intensity distribution in upconverting nanorod bundles using confocal microscopy is reported. Herein, a strategy for the synthesis of highly luminescent dual mode upconverting/downshift Y1.94O3:Ho-0.02(3+)/Yb-0.04(3+) nanorod bundles by a facile hydrothermal route has been introduced. These luminescent nanorod bundles exhibit strong green emission at 549 nm upon excitations at 449 nm and 980 nm with quantum efficiencies of similar to 6.3% and similar to 1.1%, respectively. The TEM/HRTEM results confirm that these bundles are composed of several individual nanorods with diameter of similar to 100 nm and length in the range of 1-3 mu m. Furthermore, two dimensional spatially resolved photoluminescence intensity distribution study has been carried out using confocal photoluminescence microscope throughout the nanorod bundles. This study provides a new direction for the potential use of such emerging dual mode nanorod bundles as photon sources for next generation flat panel optical display devices, bio-medical applications, luminescent security ink and enhanced energy harvesting in photovoltaic applications.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Nature Publishing Group.
Subjects:	Agriculture, Multidisciplinary
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	28 Sep 2018 08:11
Last Modified:	28 Sep 2018 08:11
URI:	http://npl.csircentral.net/id/eprint/2713

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