This title appears in the Scientific Report :
2013
Please use the identifier:
http://dx.doi.org/10.1016/j.electacta.2013.04.167 in citations.
Effects of the electrolyte species on the electrochemical dissolution of polycrystalline ZnO:Al thin films
Effects of the electrolyte species on the electrochemical dissolution of polycrystalline ZnO:Al thin films
The electrochemical anodic dissolution of sputter-deposited, aluminum-doped zinc oxide (ZnO:Al) was investigated. The dissolution proceeds mainly via a local oxygen evolution reaction and subsequent dissolution of the zinc oxide lattice. The present work focuses on the influence of the anion species...
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Personal Name(s): | Becker, J. -P. (Corresponding author) |
---|---|
Pust, Sascha / Hüpkes, J. | |
Contributing Institute: |
Photovoltaik; IEK-5 |
Published in: | Electrochimica acta, 112 (2013) S. 976 - 982 |
Imprint: |
New York, NY [u.a.]
Elsevier
2013
|
DOI: |
10.1016/j.electacta.2013.04.167 |
Document Type: |
Journal Article |
Research Program: |
Thin Film Photovoltaics |
Publikationsportal JuSER |
The electrochemical anodic dissolution of sputter-deposited, aluminum-doped zinc oxide (ZnO:Al) was
investigated. The dissolution proceeds mainly via a local oxygen evolution reaction and subsequent dissolution
of the zinc oxide lattice. The present work focuses on the influence of the anion species in the
used electrolyte. Several electrolytes (KCl, K2SO4, KNO3, KClO4) were applied. The anion species turned
out to be a major factor that influenced the kinetics of the etching process. In K2SO4 solutions a strong
limitation of the etching process to the close vicinity of the grain boundaries was observed. However,
anodic dissolution in KCl, KNO3, and KClO4 showed an unexpected etching behavior, which lead to the
formation of cavern-like structures within the ZnO:Al thin films. This was attributed to different local pH
values at the ZnO:Al/electrolyte interface. |