Conductive Characteristics of Indium Tin Oxide Thin Film on Polymeric Substrate under Long-Term Static Deformation

被引：42
作者：
Dinh-Phuc Tran [1 ]
Lu, Hung-, I [1 ]
Lin, Chih-Kuang [1 ]
机构：
[1] Natl Cent Univ, Dept Mech Engn, Jhong Li Dist 32001, Tao Yuan, Taiwan
来源：
COATINGS | 2018年 / 8卷 / 06期
关键词：
indium tin oxide; electrical conductance; static bending; polyethylene terephthalate; polyethylene naphthalate; POLYETHYLENE TEREPHTHALATE SUBSTRATE; LIGHT-EMITTING-DIODES; DOPED ZINC-OXIDE; ELECTRICAL-PROPERTIES; ITO FILMS; TRANSPARENT ELECTRODES; MECHANICAL-BEHAVIOR; DELAMINATION; RELIABILITY; DURABILITY;
D O I：
10.3390/coatings8060212
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The objective of this study is to investigate the effect of long-term static bending on the conductive characteristics of indium tin oxide (ITO) thin film in flexible optoelectronics. Two types of substrate are considered, namely ITO on polyethylene naphthalate (ITO/PEN) and ITO on polyethylene terephthalate (ITO/PET). Electrical properties of the ITO/PEN and ITO/PET sheets are measured in situ under static bending at various radii of curvature. Experimental results indicate that no significant change in electrical resistance of the ITO/PEN and ITO/PET sheets is found for compressive bending after 1000 h at a curvature radius of 10 mm or larger. However, the ITO/PEN and ITO/PET sheets are seriously damaged under a tensile bending of 10 mm radius and 5 mm radius, respectively. The given ITO/PET sheet exhibits a greater resistance to long-term mechanical bending than the ITO/PEN one, which is attributed to the effect of stiffness and thickness of substrate. As the given PET substrate has a lower stiffness and thickness than the PEN one, ITO thin film in the ITO/PET sheet has a smaller stress given a bending radius. Consequently, a smaller extent of change in the electrical conductance of ITO thin film is found in the ITO/PET sheet.
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页数：15
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