Mechanical Flexibility of ZnSnO/Ag/ZnSnO Films Grown by Roll-to-Roll Sputtering for Flexible Organic Photovoltaics
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概要
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The mechanical flexibility of ZnSnO (ZTO)/Ag/ZTO multilayer films prepared on flexible poly(ethylene terephthalate) (PET) substrates by roll-to-roll (R2R) sputtering was investigated for use in cost-efficient flexible organic solar cells (FOSCs). The change of resistance (\Delta R) of the ZTO/Ag/ZTO films was measured by means of lab-made outer/inner bending, twist bending, and stretching test systems. The failure bending radii of the ZTO/Ag/ZTO film in the outer and inner bending tests were 3 and 4.5 mm, respectively. In addition, the twisting test showed that the resistance of the ZTO/Ag/ZTO multilayer began to increase at an angle of 38°. Furthermore, the stretching test showed that the strain failure of the ZTO/Ag/ZTO multilayer film was 3%. The superior flexibility of the ZTO/Ag/ZTO films is attributed to the existence of a ductile Ag layer and the mechanical stability of the amorphous ZTO film. Similar performances of the FOSCs with flexible ZTO/Ag/ZTO anodes to reference OSCs with ITO anodes indicate that the R2R sputter-grown ZTO/Ag/ZTO multilayer is promising as an indium-free flexible anode for cost-efficient FOSCs.
- 2012-11-25
著者
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Kim Han-ki
Department Of Materials Science And Engineering Kwangju Institute Of Science And Technology (k-jist)
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Lim Jong-Wook
Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi 446-701, Republic of Korea
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Oh Se-In
Graduate School of NID Fusion Technology, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea
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Eun Kyoungtae
Graduate School of NID Fusion Technology, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea
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Choa Sung-Hoon
Graduate School of NID Fusion Technology, Seoul National University of Science and Technology, Seoul 139-743, Republic of Korea
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Koo Hyun-Woo
Next Generation B/P Development Team, OLED Business Samsung Display, Yongin, Gyeonggi 446-711, Republic of Korea
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Kim Tae-Woong
Next Generation B/P Development Team, OLED Business Samsung Display, Yongin, Gyeonggi 446-711, Republic of Korea
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Kim Han-Ki
Department of Advanced Materials Engineering for Information and Electronics, Kyung Hee University, Yongin, Gyeonggi 446-701, Republic of Korea
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