title: Spray-Deposited Large-Area Copper Nanowire Transparent Conductive Electrodes and Their Uses for Touch Screen Applications.
abstract: Large-area conducting transparent conducting electrodes (TCEs) were prepared by a fast, scalable, and low-cost spray deposition of copper nanowire (CuNW) dispersions. Thin, long, and pure copper nanowires were obtained via the seed-mediated growth in an organic solvent-based synthesis. The mean length and diameter of nanowires are, respectively, 37.7 μm and 46 nm, corresponding to a high-mean-aspect ratio of 790. These wires were spray-deposited onto a glass substrate to form a nanowire conducting network which function as a TCE. CuNW TCEs exhibit high-transparency and high-conductivity since their relatively long lengths are advantageous in lowering in the sheet resistance. For example, a 2 × 2 cm(2) transparent nanowire electrode exhibits transmittance of T = 90% with a sheet resistance as low as 52.7 Ω sq(-1). Large-area sizes (>50 cm(2)) of CuNW TCEs were also prepared by the spray coating method and assembled as resistive touch screens that can be integrated with a variety of devices, including LED lighting array, a computer, electric motors, and audio electronic devices, showing the capability to make diverse sizes and functionalities of CuNW TCEs by the reported method.
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Hsun-Chen
authors.initials: HC
authors.lastname: Chu
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Yen-Chen
authors.initials: YC
authors.lastname: Chang
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Yow
authors.initials: Y
authors.lastname: Lin
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Shu-Hao
authors.initials: SH
authors.lastname: Chang
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Wei-Chung
authors.initials: WC
authors.lastname: Chang
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Guo-An
authors.initials: GA
authors.lastname: Li
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University , 101, Section 2, Kuang-Fu Road, Hsinchu, Taiwan 30013, Republic of China.
authors.forename: Hsing-Yu
authors.initials: HY
authors.lastname: Tuan
keywords: copper; large-area; nanowire; spray deposition; touch screen; transparent conductive electrode