Novel Flexible Transparent Conductive Films with Enhanced Chemical and Electromechanical Sustainability: TiO 2 Nanosheet-Ag Nanowire Hybrid

Hiesang Sohn, Seyun Kim, Weonho Shin, Jong Min Lee, Hyangsook Lee, Dong Jin Yun, Kyoung Seok Moon, In Taek Han, Chan Kwak, Seong Ju Hwang

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Flexible transparent conductive films (TCFs) of TiO 2 nanosheet (TiO 2 NS) and silver nanowire (Ag NW) network hybrid were prepared through a simple and scalable solution-based process. The as-formed TiO 2 NS-Ag NW hybrid TCF shows a high optical transmittance (TT: 97% (90.2% including plastic substrate)) and low sheet resistance (R s : 40 Ω/sq). In addition, the TiO 2 NS-Ag NW hybrid TCF exhibits a long-time chemical/aging and electromechanical stability. As for the chemical/aging stability, the hybrid TCF of Ag NW and TiO 2 NS reveals a retained initial conductivity (ΔR s /R s < 1%) under ambient oxidant gas over a month, superior to that of bare Ag NW (δR s /R s > 4000%) or RuO 2 NS-Ag NW hybrid (δR s /R s > 200%). As corroborated by the density functional theory simulation, the superb chemical stability of TiO 2 NS-Ag NW hybrid is attributable to the unique role of TiO 2 NS as a barrier, which prevents Ag NW's chemical corrosion via the attenuated adsorption of sulfidation molecules (H 2 S) on TiO 2 NS. With respect to the electromechanical stability, in contrast to Ag NWs (δR/R 0 152.9%), our hybrid TCF shows a limited increment of fractional resistivity (ΔR/R 0 - 14.4%) after 200 000 cycles of the 1R bending test (strain: 6.7%) owing to mechanically welded Ag NW networks by TiO 2 NS. Overall, our unique hybrid of TiO 2 NS and Ag NW exhibits excellent electrical/optical properties and reliable chemical/electromechanical stabilities.

Original languageEnglish
Pages (from-to)2688-2700
Number of pages13
JournalACS Applied Materials and Interfaces
Volume10
Issue number3
DOIs
Publication statusPublished - 2018 Jan 24

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Conductive films
Nanosheets
Nanowires
Sustainable development
Aging of materials
Sheet resistance
Chemical stability
Opacity
Bending tests
Oxidants
Silver
Density functional theory
Optical properties
Gases
Corrosion
Plastics
Adsorption
Molecules

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Sohn, Hiesang ; Kim, Seyun ; Shin, Weonho ; Lee, Jong Min ; Lee, Hyangsook ; Yun, Dong Jin ; Moon, Kyoung Seok ; Han, In Taek ; Kwak, Chan ; Hwang, Seong Ju. / Novel Flexible Transparent Conductive Films with Enhanced Chemical and Electromechanical Sustainability : TiO 2 Nanosheet-Ag Nanowire Hybrid. In: ACS Applied Materials and Interfaces. 2018 ; Vol. 10, No. 3. pp. 2688-2700.
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title = "Novel Flexible Transparent Conductive Films with Enhanced Chemical and Electromechanical Sustainability: TiO 2 Nanosheet-Ag Nanowire Hybrid",
abstract = "Flexible transparent conductive films (TCFs) of TiO 2 nanosheet (TiO 2 NS) and silver nanowire (Ag NW) network hybrid were prepared through a simple and scalable solution-based process. The as-formed TiO 2 NS-Ag NW hybrid TCF shows a high optical transmittance (TT: 97{\%} (90.2{\%} including plastic substrate)) and low sheet resistance (R s : 40 Ω/sq). In addition, the TiO 2 NS-Ag NW hybrid TCF exhibits a long-time chemical/aging and electromechanical stability. As for the chemical/aging stability, the hybrid TCF of Ag NW and TiO 2 NS reveals a retained initial conductivity (ΔR s /R s < 1{\%}) under ambient oxidant gas over a month, superior to that of bare Ag NW (δR s /R s > 4000{\%}) or RuO 2 NS-Ag NW hybrid (δR s /R s > 200{\%}). As corroborated by the density functional theory simulation, the superb chemical stability of TiO 2 NS-Ag NW hybrid is attributable to the unique role of TiO 2 NS as a barrier, which prevents Ag NW's chemical corrosion via the attenuated adsorption of sulfidation molecules (H 2 S) on TiO 2 NS. With respect to the electromechanical stability, in contrast to Ag NWs (δR/R 0 152.9{\%}), our hybrid TCF shows a limited increment of fractional resistivity (ΔR/R 0 - 14.4{\%}) after 200 000 cycles of the 1R bending test (strain: 6.7{\%}) owing to mechanically welded Ag NW networks by TiO 2 NS. Overall, our unique hybrid of TiO 2 NS and Ag NW exhibits excellent electrical/optical properties and reliable chemical/electromechanical stabilities.",
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Novel Flexible Transparent Conductive Films with Enhanced Chemical and Electromechanical Sustainability : TiO 2 Nanosheet-Ag Nanowire Hybrid. / Sohn, Hiesang; Kim, Seyun; Shin, Weonho; Lee, Jong Min; Lee, Hyangsook; Yun, Dong Jin; Moon, Kyoung Seok; Han, In Taek; Kwak, Chan; Hwang, Seong Ju.

In: ACS Applied Materials and Interfaces, Vol. 10, No. 3, 24.01.2018, p. 2688-2700.

Research output: Contribution to journalArticle

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AU - Sohn, Hiesang

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AU - Kwak, Chan

AU - Hwang, Seong Ju

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N2 - Flexible transparent conductive films (TCFs) of TiO 2 nanosheet (TiO 2 NS) and silver nanowire (Ag NW) network hybrid were prepared through a simple and scalable solution-based process. The as-formed TiO 2 NS-Ag NW hybrid TCF shows a high optical transmittance (TT: 97% (90.2% including plastic substrate)) and low sheet resistance (R s : 40 Ω/sq). In addition, the TiO 2 NS-Ag NW hybrid TCF exhibits a long-time chemical/aging and electromechanical stability. As for the chemical/aging stability, the hybrid TCF of Ag NW and TiO 2 NS reveals a retained initial conductivity (ΔR s /R s < 1%) under ambient oxidant gas over a month, superior to that of bare Ag NW (δR s /R s > 4000%) or RuO 2 NS-Ag NW hybrid (δR s /R s > 200%). As corroborated by the density functional theory simulation, the superb chemical stability of TiO 2 NS-Ag NW hybrid is attributable to the unique role of TiO 2 NS as a barrier, which prevents Ag NW's chemical corrosion via the attenuated adsorption of sulfidation molecules (H 2 S) on TiO 2 NS. With respect to the electromechanical stability, in contrast to Ag NWs (δR/R 0 152.9%), our hybrid TCF shows a limited increment of fractional resistivity (ΔR/R 0 - 14.4%) after 200 000 cycles of the 1R bending test (strain: 6.7%) owing to mechanically welded Ag NW networks by TiO 2 NS. Overall, our unique hybrid of TiO 2 NS and Ag NW exhibits excellent electrical/optical properties and reliable chemical/electromechanical stabilities.

AB - Flexible transparent conductive films (TCFs) of TiO 2 nanosheet (TiO 2 NS) and silver nanowire (Ag NW) network hybrid were prepared through a simple and scalable solution-based process. The as-formed TiO 2 NS-Ag NW hybrid TCF shows a high optical transmittance (TT: 97% (90.2% including plastic substrate)) and low sheet resistance (R s : 40 Ω/sq). In addition, the TiO 2 NS-Ag NW hybrid TCF exhibits a long-time chemical/aging and electromechanical stability. As for the chemical/aging stability, the hybrid TCF of Ag NW and TiO 2 NS reveals a retained initial conductivity (ΔR s /R s < 1%) under ambient oxidant gas over a month, superior to that of bare Ag NW (δR s /R s > 4000%) or RuO 2 NS-Ag NW hybrid (δR s /R s > 200%). As corroborated by the density functional theory simulation, the superb chemical stability of TiO 2 NS-Ag NW hybrid is attributable to the unique role of TiO 2 NS as a barrier, which prevents Ag NW's chemical corrosion via the attenuated adsorption of sulfidation molecules (H 2 S) on TiO 2 NS. With respect to the electromechanical stability, in contrast to Ag NWs (δR/R 0 152.9%), our hybrid TCF shows a limited increment of fractional resistivity (ΔR/R 0 - 14.4%) after 200 000 cycles of the 1R bending test (strain: 6.7%) owing to mechanically welded Ag NW networks by TiO 2 NS. Overall, our unique hybrid of TiO 2 NS and Ag NW exhibits excellent electrical/optical properties and reliable chemical/electromechanical stabilities.

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