(ITO) : [1] ITO (GO) (TCFS) [2] (solar cell) (touch panel) (light emitting diode, LED) (E-paper) (low emissivity glass) (electro chromic, EC) [6] [3]

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1 43 Journal of Technology, Vol. 31, No. 1, pp (2016) 1, * (GO) GO PMMA PET SEM GO PMMA (SEM) PET ITO A STUDYING FOR PREPARATION AND CHARACTERIZATION OF GRAPHENE OXIDE/SILVER NANOWIRE CONDUCTIVE COMPOSITE FILM Chi-Ying Huang 1, * Wei-Ming Chiu 2 1 Department of Chemical and materials Engineering National Chinyi University of Technology Taichung, Taiwan 411, R.O.C. 2 Graduate Institute of Precision Manufacture National Chinyi University of Technology Taichung, Taiwan 411, R.O.C. Key Words: Graphene oxide, Silver nanowire, Transparent conductive film. ABSTRACT The study use graphene oxide (GO) and silver nanowire (AgNW) and prepared transparent conductive films (TCFS) to research GO dispersion in solution and preparation condition, and silver nanowire synthesis temperature and PVP protection agent effect. We select the best conductivity formula analysis the film transmittance and conductivity and different graphene and nano silver wire content with PMMA oligomer to prepare transparent con- * b @yahoo.com.tw Corresponding author: Chi-Ying Huang, b @yahoo.com.tw

Wei-Ming Chiu 2 1 Department of Chemical and materials Engineering National Chinyi University of Technology Taichung, Taiwan 411, R.O.C. 2 Graduate Institute of Precision Manufacture National Chinyi University of Technology Taichung, Taiwan 411, R.

2 44 ductive film, using SEM observation GO dispersed in PMMA. Results show graphene content increase conductivity rise and transmittance decreased. Results also show graphene content increase conductivity rise and transmittance decreased. We put in silver nanowire to increase film conductivity and maintain the transmittance to achieve high transmittance and high conductivity targets. Coating on PET improved the traditional ITO bent resulting in an increase in resistance. : [1] ITO (GO) (TCFS) [2] [3] (Substrate) (nm) ( m) ITO [4] (conducting polymer) (silver nanowires) (carbon nanotube CNT) (graphene) (OLED) [5] 1. (ITO) (solar cell) (touch panel) (light emitting diode, LED) (E-paper) (low emissivity glass) (electro chromic, EC) [6] 2. [7] [8] [9] [10] Improving Hummer s ( ) [11] ITO ITO ITO 3% ITO ITO ITO [12-13] 1. Hummer s 1 H 2 SO 4 HNO 3 KMnO 4

We put in silver nanowire to increase film conductivity and maintain the transmittance to achieve high transmittance and high conductivity targets.

3 45 (a) (b) (c) (d) 1 4 PVP 36,000 (a) 1.5 SEM (b) 2.5 SEM (c) 3.5 SEM (d) 4.5 SEM PVP/AgNO 3 = 1.5 PVP/AgNO 3 = 2.5 PVP/AgNO 3 = 3.5 PVP/AgNO 3 = 4.5 Abs DI water DMF Wavelength (nm) 5 PVP 36,000 Abs Wavelength nm 3 UV-Vis ( ) 2. 2 PVP PVP ( 40,000) ( 99.5%) PVP 1 C 1 1 c.c. 1 C PMMA nm DMF DMF GO 4 1 C 1.5 hr PVP 36, SEM SEM nm 5 3 nm

2 400 0 0 0 0 Wavelength (nm) 5 PVP 36,000 Abs 1.00 0.95 0. 0.85 0. 400 0 0 0 0 Wavelength nm 3 UV-Vis ( ) 2.

4 wt%go/ wt%go/ wt%go/ wt%go/ wt%go/ nm nm 400 nm wt% 3 wt% 5 wt% 7 wt% 10 wt%go GO/AgNws GO 1 wt%go 10 wt%agnws 97.2% 79 /sq 1 wt%go/agnws 1 wt%go 4 B 11 ITO ITO 12 1 wt%go/agnws 79 /sq ( ) 10 wt% 74 /sq

6 7 8 9 10 1 wt% 3 wt% 5 wt% 7 wt% 10 wt%go GO/AgNws GO 1 wt%go 10 wt%agnws 97.

5 47 1 wt%go/ (wt%) 1% 3% 5% 7% 10% (Sheet Resistance) ( /sq) (%) wt%go/ (wt%) 1% 3% 5% 7% 10% (Sheet Resistance) ( /sq) (%) wt%go/ (wt%) 1% 3% 5% 7% 10% (Sheet Resistance) ( /sq) (%) wt%go/ (wt%) 1% 3% 5% 7% 10% (Sheet Resistance) ( /sq) (%) wt%go/ (wt%) 1% 3% 5% 7% 10% (Sheet Resistance) ( /sq) (%) (wt%) 1% 3% 5% 7% 10% ASTM 4B 4B 4B 4B 4B ITO (Sheet Resistance) ( /sq) Bending Number 11 ITO Bending Number 12

0 77.1 77.0 77.0 77.2 7 wt%go/ (wt%) 1% 3% 5% 7% 10% (Sheet Resistance) ( /sq) 288 197 162 74 (%) 65.4 65.7 65.4 65.5 65.

6 (Sheet Resistance) ( /sq) PMMA 79 /sq 97.2% ( ) PMMA 1 wt% ASTM 4B 97% ( ) 1%GO/10% 4 /sq 97% ( ) ( ) ( ) 1. Hummer s KMnO 4 PET 1% 2. PVP PVP 1 C PVP Lee, D., H. Lee, Y. Ahn, and Y. Lee High-Performance Flexible Transparent Conductive Film Based on Graphene/AgNW/Graphene Sandwich Structure. Carbon 81: Myekhlai, M., S. Lee, T. Lee, H. Chung, and H. Jeong A Facile and Eco-Friendly Synthesis of Graphene-Silver Hybrid Materials for Transparent Conductive Films. Ceramics Internationa. 41 (1): Liu, B. T., and H. L. Kuo Graphene/Silver Nanowire Sandwich Structures for Transparent Conductive Films. Carbon 63: Oh, S. Y., S. H. Kim, Y. S. Chi, and T. J. Kang Fabrication of Oxide-Free Graphene Suspension and Transparent Thin Films Using Amide Solvent and Thermal Treatment. Applied Surface Science 258 (22): Lee, S. H., S. Lim, and H. Kim Smooth-Surface Silver Nanowire Electrode with High Conductivity and Transparency on Functional Layer Coated Flexible Film. Thin Solid Films 589: Nekahi, A, P. H. Marashi, and D. Haghshenas Transparent Conductive Thin Film of Ultra Large Reduced Graphene Oxide Monolayers. Applied surface Science 295: Deokar, G, J. Avila, I. Razado-Colambo, J.-L. Codron, C. Boyaval, E. Galopin, M.-C. Asensio, and D. Vignaud Towards High Quality CVD Graphene Growth and Transfer. Carbon 89: Tian, J., B. Hu, Z. Wei, Y. Jin, Z. Luo, M. Xia, Q. Pan, Y. Liu Suface Structure Deduced Differences of Copper

Carbon 81: 439-446. 2. Myekhlai, M., S. Lee, T. Lee, H. Chung, and H. Jeong. 2015. A Facile and Eco-Friendly Synthesis of Graphene-Silver Hybrid Materials for Transparent Conductive Films.

7 49 Foil and Film for Graphene CVD Growth. Applied Surface Sciene : Knieke, C., A. Berger, M. Voigt, R. N. K. Taylor, J. Röhrl, and W. Peukert Scalable Production of Graphene Sheets by Mechanical Delamination. Carbon 48 (11): Ahmadi-Moghadam, B., M. Sharafimasooleh, S. Shadlou, and F. Taheri Effect of Functionalization of Graphene Nanoplatelets on the Mechanical Response of Graphene/ Epoxy Composites. Materials & Design 66: Valentini, L., M. Cardinali, E. Fortunati, L. Torre, and J. M. Kenny A Novel Method to Prepare Conductive Nanocrystalline Cellulose/Graphene Oxide Composite Films. Materials Letters 105:

Effect of Functionalization of Graphene Nanoplatelets on the Mechanical Response of Graphene/ Epoxy Composites. Materials & Design 66: 142-149. 13. Valentini, L., M. Cardinali, E.

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