Supporting Information for

Transcription

1 Supporting Information for Novel Flexible Transparent Conductive Films with Enhanced Chemical and Electro- Mechanical Sustainability: TiO 2 Nanosheet-Ag Nanowire Hybrid Hiesang Sohn, 1,2 * Seyun Kim, 1 Weonho Shin, 2 Jong Min Lee, 2 Hyangsook Lee, 3 Dong-Jin Yun, 3 Kyoung-Seok Moon, 2 In Taek Han, 2 Chan Kwak 2 and Seong-Ju Hwang 4 1 Department of Chemical Engineering, Kwangwoon University, 20 Kwangwoon-Ro, Nowon- Gu, Seoul 01897, Korea 2 Inorganic Materials Laboratory, Materials Center, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Yeongtong-gu, Suwon, , Korea 3 Analytical Engineering Group, Platform Technology Laboratory, Samsung Advanced Institute of Technology, Samsung Electronics, 130 Samsung-ro, Yeongtong-gu, Suwon, , Korea 4 Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, 03760, Korea S-1

2 Corresponding Author: Hiesang Sohn, Tel: Address: Figure S1. (a) Digital photograph of TiO 2 nanosheet (NS) colloidal solution (left: Tyndall phenomenon observed in our TiO 2 NS solution, right: large scale production of TiO 2 NS solution in a scale of 300 ml) (b) UV-Vis spectra of TiO 2 NS. S-2

3 Figure S2. (a) Digital photograph of RuO 2 NS colloidal solution (b) UV-Vis spectra of RuO 2 NS (c) AFM image of RuO 2 NS for the measurement of NS thickness. S-3

4 Figure S3. Atomic force microscope (AFM) image of Ag NW (a) plane view, (b) 3D constructed image of (b), (c) AFM image analysis for the measurement of Ag NW thickness. Figure S4. (a) TEM images of TiO 2 NS deposited on Cu TEM grid, (b) magnified image of TiO 2 NS in (a), (c) high-resolution TEM images of TiO 2 NS obtained from (b) (inset: SAED diffraction pattern). S-4

5 Figure S5. (a) AFM images of TiO 2 NS (b) AFM image analysis for the measurement of TiO 2 NS thickness. Figure S6. Schematic illustration on the effect of nanopressing on the TCF based on (a) Ag NW and (b) Ag NW-TiO 2 NS hybrid. S-5

6 Figure S7. Electronic images for RuO2 NS: TEM images for (a) dispersed RuO2 NS; (b) RuO2 NS (cross-section view); (c) SEM images of RuO2 NS deposited on PC substrate; (d) SEM images for RuO2 NS-Ag NW hybrid prepared on PC substrate. Figure S8. Change of sheet resistance (Rs) and transmittance (TT) with time for ZnO NS (a) Change of sheet resistance (b) change of optical transmittance. S-6

7 Figure S9. Comparison of resistivity change ( R/R 0 ) of various conductors (Ag NW and RuO 2 NS-Ag NW and TiO 2 NS-Ag NW hybrid) measured after 200K bending cycles at 6.7% strain. S-7

8 Figure S10. Plot of optical transmittance (%) vs. sheet resistance (R s, ohm/sq.) in comparison of previous studies and this work (Ag NW-TiO 2 NS hybrid TCF). Figure S11. Plot of bending strain (ε, %) vs. fractional resistivity change ( R/R 0 ) at various bending cycles (<1K, ~10K, ~40K, ~200K) in comparison of previous studies and this work (Ag NW/TiO 2 NS hybrid). (R1) (R2) Park, J. H.; Lee, D. Y.; Kim, Y.-H.; Kim, J. K.; Lee, J. H.; Park, J. H.; Lee, T.-W.; Cho, J. H. Flexible and Transparent Metallic Grid Electrodes Prepared by Evaporative Assembly. ACS Appl. Mater. Interfaces 2014, 6, Hsiao, S.-T.; Tien, H.-W.; Liao, W.-H.; Wang, Y.-S.; Li, S.-M.; MMa, C.-C.; Yu, Y.- H.; Chuang, W.-P. A Highly Electrically Conductive Graphene-Silver Nanowire Hybrid Nanomaterial for Transparent Conductive Films. J. Mater. Chem. C 2014, 2, S-8

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