Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 97, Issue 10, Pages 3238-3243Publisher
WILEY
DOI: 10.1111/jace.13116
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Funding
- [25810140]
- Grants-in-Aid for Scientific Research [25810140] Funding Source: KAKEN
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Single- and multi-layer transparent conductive oxide (TCO) thin films exhibiting high performance, good packing density and low surface/interface roughness are deposited on silica glass substrates by the sol-gel method. The crystal and microstructural properties of the TCO thin films are evaluated as an alternate to films prepared by ultra-high vacuum deposition. Tin-doped indium oxide (ITO) thin films produced using a two-step drying process showed low surface roughness because of dense packing structure not only horizontal but also vertical directions. As a result, electrical conductivity, carrier concentration, carrier mobility, and optical transmittance of 2.3 x 10(3)S/cm, 8x10(20)cm(-3), 18cm(2)/Vs, and over 98% at 500nm, respectively, were achieved. A multilayer ZnO/ITO stacked structure was also fabricated using the sol-gel process. Our findings suggest that solution-based methods show promise as an alternative to existing ultra-high vacuum methods to fabricate TCO thin films.
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