Co-occurrence of Dominant Direct and Indirect Transitions in Low Temperature Sputtered Indium Tin Oxide Thin Films on Polymers

Indium tin oxide （ITO） layers are prepared on polymethylmethacrylate and polyethylene terephthalate by rf- magnetron sputtering at room temperature. Their 3D-AFM images and visible transmittance spectra are contrastively characterized and studied. An interesting morphological effect of the polymer s...

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Bibliographic Details
Published in:Chinese physics letters 2010-08, Vol.27 (8), p.186-189
Main Author: 殷学松 唐武 翁小龙 邓龙江
Format: Article
Language:English
Subjects:
Band structure of solids
Correlation
Indium tin oxide
ITO薄膜
Spectra
Sputtering
Thin films
Transmittance
射频磁控溅射
直接和
聚合物基体
聚对苯二甲酸乙二醇酯
聚甲基丙烯酸甲酯
铟锡氧化物薄膜
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Summary:Indium tin oxide （ITO） layers are prepared on polymethylmethacrylate and polyethylene terephthalate by rf- magnetron sputtering at room temperature. Their 3D-AFM images and visible transmittance spectra are contrastively characterized and studied. An interesting morphological effect of the polymer substrates on their top ITO layers is observed. Dominant direct and indirect transition types deduced from optical spectra are surprisingly found in ITO films on different polymers. Furthermore, qualitative band structures are figured, and some theoretical discussions about the correlation of optical band structure, interface/surface morphology and carrier density are also presented.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/8/087303