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On the deactivation of the dopant and electronic structure in reactively sputtered transparent Al-doped ZnO thin films

Horwat, David (author)
Jullien, Maud (author)
Capon, Fabien (author)
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Pierson, Jean-Francois (author)
Andersson, Joakim (author)
Uppsala universitet,Institutionen för fysik och astronomi
Luis Endrino, Jose (author)
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 (creator_code:org_t)
2010-03-18
2010
English.
In: Journal of Physics D. - : IOP Publishing. - 0022-3727 .- 1361-6463. ; 43:13, s. 132003-
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We report on the possible origin of electrical heterogeneities in 4 at% Al-doped ZnO (AZO) reactively sputtered films. It is found through the Zn L-3 and Al K edge x-ray absorption near-edge structure that a fraction of the Al dopant is deactivated by its positioning in octahedral conformation with oxygen. This fraction as well as the conductivity, optical bandgap and c-axis parameter of ZnO wurtzite are all found to depend on the sample position during deposition. The present results suggest the formation of a metastable Al2O3 (ZnO) m homologous phase that degrades the electrical conductivity.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

Physics
Fysik

Publication and Content Type

ref (subject category)
art (subject category)

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