Jayanthi, K. and Manorama, Sunkara V. and Chawla, Santa (2013) Observation of Nd3+ visible line emission in ZnO : Nd3+ prepared by a controlled reaction in the solid state. Journal of Physics D: Applied Physics, 46 (32). 325101-1- 325101-7. ISSN 0022-3727

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Abstract

Visible emission from ZnO is usually broadband and realizing line emission from rare earth f-f transitions in ZnO at room temperature has proven to be difficult. A controlled solid-state reaction process with different standing times to synthesize rare earth doped (Nd3+) zinc oxide (ZnO) has shown that sharp and intense line emission in the orange region (595 nm) could be realized under blue excitation, where both excitation and emission transitions occur between Nd3+ levels situated intragap in ZnO. In addition, host-to-Nd3+ energy transfer is also observed under band-to-band excitation. Incidentally, undoped ZnO synthesized by an identical process exhibits a broad green emission. Detailed characterization of the ZnO : Nd3+ powder by x-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, x-ray photoelectron spectroscopy, photoluminescence spectroscopy and time-resolved decay indicates a hexagonal phase with the presence of Nd3+ in the ZnO lattice, forming spherical particles (similar to 200 nm) having a sharp visible emission with decay time in the microsecond range (9.60 mu s).

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s IOP Publishing.
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	09 Jul 2020 10:41
Last Modified:	09 Jul 2020 10:41
URI:	http://npl.csircentral.net/id/eprint/3107

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