Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4235
Title: Effects of Al addition on the native defects in hafnia
Authors: Li, Q
Koo, KM
Lau, WM
Lee, PF
Dai, J 
Hou, ZF
Gong, XG
Issue Date: 1-May-2006
Source: Applied physics letters, 1 May 2006, v. 88, no. 18, 182903, p. 1-3
Abstract: Two occupied native defect bands are experimentally detected in pure HfO₂. The density of states of band one in the middle of the band gap reduces drastically with the Al addition, while that of band two slightly above the valence-band maximum remains rather unaffected. We attribute the two bands to the charged oxygen vacancy, and the oxygen-interstitial-related defect states of the HfO₂, respectively. We demonstrate that the added Al passivates the V[sub O]⁺ induced midgap states but has little effect on other aspects of the electronic structure of the material.
Keywords: Aluminium
Hafnium compounds
Defect states
Electronic density of states
Energy gap
Valence bands
Vacancies (crystal)
Interstitials
Passivation
High-k dielectric thin films
Publisher: American Institute of Physics
Journal: Applied physics letters 
ISSN: 0003-6951
EISSN: 1077-3118
DOI: 10.1063/1.2196470
Rights: © 2006 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Q. Li et al., Appl. Phys. Lett. 88, 182903 (2006) and may be found at http://apl.aip.org/resource/1/applab/v88/i18/p182903_s1
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Li_A1_Defects_hafnia.pdf198.03 kBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record
PIRA download icon_1.1View/Download Full Text

SCOPUSTM   
Citations

26
Last Week
0
Last month
0
Citations as of Sep 3, 2020

WEB OF SCIENCETM
Citations

19
Last Week
0
Last month
0
Citations as of Sep 26, 2020

Page view(s)

382
Last Week
0
Last month
Citations as of Sep 29, 2020

Download(s)

265
Citations as of Sep 29, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.