Defects on the Surface of Ti-Doped MgAl2O4 Nanophosphor

Jaehyuk Lim; Yongseon Kim; Sungdae Kim; Youngwoon Kim; Shinhoo Kang

doi:10.1186/s11671-017-2288-1

Nanoscale Research Letters (Sep 2017)

Defects on the Surface of Ti-Doped MgAl2O4 Nanophosphor

Jaehyuk Lim,
Yongseon Kim,
Sungdae Kim,
Youngwoon Kim,
Shinhoo Kang

Affiliations

Jaehyuk Lim: Samsung Electronics, 95 Samsung2-ro, Giheung-gu
Yongseon Kim: Department of Materials Science and Engineering, Inha University
Sungdae Kim: Korea Institute of Materials Science(KIMS)
Youngwoon Kim: Department of Materials Science and Engineering, Seoul National University
Shinhoo Kang: Department of Materials Science and Engineering, Seoul National University

DOI: https://doi.org/10.1186/s11671-017-2288-1
Journal volume & issue: Vol. 12, no. 1
pp. 1 – 5

Abstract

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Abstract Ti-doped nano MgAl2O4 for white emission was synthesized by combustion method. Extrinsic Schottky defects, Al vacancies and Ti4+ dopant in Al sites, which are considered to be responsible for bluish-white emission, were observed by STEM on the surface of Ti-doped nano MgAl2O4 powder. The stabilities of the Schottky defect associates, (TiAl ·–VAl′′′)′′, were demonstrated by DFT calculation. The emission behavior was interpreted with these results.

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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