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

resumo

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.

palavras-chave

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

categoria

Materials Science

autores

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

nossos autores

agradecimentos

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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