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Pressureless Sintering of Luminescent CaAlSiN3:Eu Ceramics

Title data

Pricha, Irene ; Rossner, Wolfgang ; Moos, Ralf:
Pressureless Sintering of Luminescent CaAlSiN3:Eu Ceramics.
In: Journal of Ceramic Science and Technology. Vol. 6 (2015) Issue 1 . - pp. 63-68.
ISSN 2190-9385
DOI: https://doi.org/10.4416/JCST2014-00047

Official URL: Volltext

Abstract in another language

CaAlSiN3:Eu powder compacts were pressureless-sintered in a nitrogen atmosphere between 1400 and 1800 °C. The sintering behavior and the dependence of the luminescence properties on the sintering temperature were investigated. It is shown for the first time that it is possible to sinter CaAlSiN3:Eu ceramics that efficiently emit light starting from a micrometer-sized phosphor powder optimized for high luminescence efficiency. The maximum densities of the ceramics were achieved at ≥ 1700 °C and are limited to 80 % of the solid-state density owing to inhomogeneities of the powder compacts caused by the applied binder-free dry-pressing procedure. The phase composition of the ceramic specimens as well as the luminescence properties remained unchanged during sintering. These results demonstrate that pressureless sintering is suitable for fabricating CaAlSiN3:Eu bulk ceramics that can be used for LED applications.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Faculties
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 17 Mar 2015 11:59
Last Modified: 18 Apr 2016 07:12
URI: https://eref.uni-bayreuth.de/id/eprint/8410