ISSN:
1573-482X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The etching of indium-tin oxide (ITO) in acidic solution has been investigated electro-chemically via conductivity change, cyclic voltammetry and in situ UV-visible spectroscopy. It is seen that the ITO has a new color and lower conductivity when reduced. Proton insertion is faster than proton extraction, with D=7.0×10-11 cm2 s-1 and 2.4×10-11 cm2 s-1 respectively. Spectroscopic and kinetic results are discussed in terms of a possible mixed-valent solid-state material comprising In(I)–In(III) oxides, although it is concluded that such a system does not, in fact, exist. It is shown that the chemical reactivity of reduced ITO is more-or-less the same as the oxidized material, but the observed changes result from a decreased mechanical strength causing HxITO to disintegrate faster than ITO. Implications are discussed for ITO-based devices that contain traces of aqueous acid.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1008955929904
Permalink
