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Lookup NU author(s): Naglaa Nasralla,
Professor Lidija Siller
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Springer, 2020.
For re-use rights please refer to the publisher's terms and conditions.
In this work, dependence of the surface and lattice defects of Fe doped TiO2 at different iron concentrations and annealing temperatures were monitored by utilizing the photoluminescence (PL) spectroscopy. In order to achieve the maximum spectral resolution, PL spectroscopy was performed in vacuum and at different temperature of 25 to 300 K. It has been found that the photoluminescene properties were significantly influenced by different crystalline structure. The PL spectrum of the rutile 1% and 5% Fe: TiO2 anatase show similar PL behavior while the emission intensity of the rutile sample was lower than the anatase. This result, which can be explained by the presence of iron ions at the surface for the anatase and the increased oxygen vacancies due to the diffusion of iron into the lattice in rutile, as a result of annealing at high temperature proposes the rutile phase for the applications of environmental photocatalysis.
Author(s): Nasralla NHS, Yeganeh M, Siller L
Publication type: Article
Publication status: Published
Journal: Applied Physics A
Online publication date: 15/02/2020
Acceptance date: 04/02/2020
Date deposited: 09/02/2020
ISSN (print): 0947-8396
ISSN (electronic): 1432-0630
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