Enhancement of near infrared emission in La co-doped ZnO/Er nanoplates

abstract

Undoped and rare earth doped Er, Er/Yb and Er/Yb/La ZnO nanoplates were synthesized in order to study the effect of La co-doping on near infrared (NIR) emission properties of the Er ions hosted in the semiconductor. Samples were characterized by X-ray diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy. Emission spectra of the La co-doped Er/Yb ZnO nanoplates showed an efficiency enhancement of Er ion emission in NIR region around 1550 nm which is a very important wavelength for optical communication technologies. The enhancement mechanism for the NIR emission is discussed in detail. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

keywords

THIN-FILMS; ENERGY-TRANSFER; ER; ELECTROLUMINESCENCE; ERBIUM; GAN; FABRICATION

subject category

Materials Science

authors

Zamiri, R; Rebelo, A; Ahangar, HA; Belsley, MS; Ferreira, JMF

our authors

acknowledgements

The author Reza Zamiri, would like to express his personal acknowledgment to FCT (Fundacaopara a Ciencia e a Tecnologia) for his post-doctoral research grant with reference no. (SFRH/BPD/76185/2011). The support from CICECO is also acknowledged.

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