Change search
ReferencesLink to record
Permanent link

Direct link
A first principles study on optical transparency mechanism in Dy doped alpha-SiAlON ceramics
KTH, School of Biotechnology (BIO), Theoretical Chemistry.
Show others and affiliations
2009 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 106, no 9Article in journal (Refereed) Published
Abstract [en]

Dy doped alpha-SiAlON ceramics prepared by the hot-pressing method show a high optical transmittance value, >70%, in the infrared region of 1.5-4.5 mu m. First principles calculations have been carried out to reveal the underlying transparency mechanism. It is found that the valence shell of doped Dy atoms interacts strongly with the doping states of alpha-SiAlON, resulting in the increase in the optical gap from 0.4 to 1.1 eV, which suppresses the photoabsorption in the wavelength region longer than 1.0 mu m and leads to the good transparency property. The calculated optical transmission spectra are in good agreement with the corresponding experiments.

Place, publisher, year, edition, pages
2009. Vol. 106, no 9
Keyword [en]
phase-transformations, kinetics, calcium
URN: urn:nbn:se:kth:diva-19026DOI: 10.1063/1.3253727ISI: 000272555700030ScopusID: 2-s2.0-70450269245OAI: diva2:337073
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-01-28Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Jiang, JunLuo, Yi
By organisation
Theoretical Chemistry
In the same journal
Journal of Applied Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 17 hits
ReferencesLink to record
Permanent link

Direct link