Flexible Indium-Tin Oxide Crystal on Plastic Substrates Supported by Graphene Monolayer.

Citation data:

Scientific reports, ISSN: 2045-2322, Vol: 7, Issue: 1, Page: 3131

Publication Year:
2017
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Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/22277
PMID:
28600488
DOI:
10.1038/s41598-017-02265-3
Author(s):
Lee, Sang Jin; Kim, Yekyung; Hwang, Jun-Yeon; Lee, Ju-Ho; Jung, Seungon; Park, Hyesung; Cho, Seungmin; Nahm, Sahn; Yang, Woo Seok; Kim, Hyeongkeun; Han, Seung Ho Show More Hide
Publisher(s):
Springer Nature; NATURE PUBLISHING GROUP
Tags:
Multidisciplinary
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article description
Flexible and crystallized indium-tin oxide (ITO) thin films were successfully obtained on plastic polyethylene terephthalate (PET) films with monolayered graphene as a platform. The highly crystalline ITO (c-ITO) was first fabricated on a rigid substrate of graphene on copper foil and it was subsequently transferred onto a PET substrate by a well-established technique. Despite the plasma damage during ITO deposition, the graphene layer effectively acted as a Cu-diffusion barrier. The c-ITO/graphene/PET electrode with the 60-nm-thick ITO exhibited a reasonable sheet resistance of ~45 Ω sq and a transmittance of ~92% at a wavelength of 550 nm. The c-ITO on the monolayered graphene support showed significant enhancement in flexibility compared with the ITO/PET film without graphene because the atomically controlled monolayered graphene acted as a mechanically robust support. The prepared flexible transparent c-ITO/graphene/PET electrode was applied as the anode in a bulk heterojunction polymer solar cell (PSC) to evaluate its performance, which was comparable with that of the commonly used c-ITO/glass electrode. These results represent important progress in the fabrication of flexible transparent electrodes for future optoelectronics applications.