Effect of doping concentration on Nd-related photoluminescence in TiO2 with Al co-doping

Mariko Murayama, Yushi Yanagida, Shuji Komuro, Xinwei Zhao

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Nd doped, Nd-Al co-doped anatase phase TiO2 thin films were fabricated on silicon substrates by laser ablation and post annealing. The result of measuring PL spectra showed intense emissions from a luminescent centre of Nd3+ ions in these thin films. The luminescence of Nd-Al co-doped samples were stronger and broader than only Nd doped samples. Doping concentration of Nd determined suitable co-doping concentration of Al and post annealing temperature. Also there is the difference of shape of the PL spectra which indicates that the difference of local fine structure around Nd. Based on these facts, XAFS spectra was measured and suggested that the coordination around Nd was changed by this Al-co-doping.

Original languageEnglish
Article number012068
JournalJournal of Physics: Conference Series
Volume864
Issue number1
DOIs
Publication statusPublished - 15 Aug 2017
Event33rd International Conference on the Physics of Semiconductors, ICPS 2016 - Beijing, China
Duration: 31 Jul 20165 Aug 2016

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