title: Fabrication of Oxidation-Resistant Metal Wire Network-Based Transparent Electrodes by a Spray-Roll Coating Process.
abstract: Roll and spray coating methods have been employed for the fabrication of highly oxidation resistant transparent and conducting electrodes (TCEs) by a simple solution process using crackle lithography technique. We have spray-coated a crackle paint-based precursor to produce highly interconnected crackle network on PET roll mounted on a roll coater with web speed of 0.6 m/min. Ag TCE with a transmittance of 78% and sheet resistance of ∼20 Ω/□ was derived by spraying Ag precursor ink over the crackle template followed by lift-off and annealing under ambient conditions. The Ag wire mesh was stable toward bending and sonication tests but prone to oxidation in air. When electrolessly coated with Pd, its robustness toward harsh oxidation conditions was enhanced. A low-cost transparent electrode has also been realized by using only small amounts of Ag as seed layer and growing Cu wire mesh by electroless method. Thus, made Ag/Cu meshes are found to be highly stable for more than a year even under ambient atmosphere.
authors.affiliation: Chemistry & Physics of Materials Unit and Thematic Unit of Excellence in Nanochemistry, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O., Bangalore 560064, India.
authors.forename: S
authors.initials: S
authors.lastname: Kiruthika
authors.affiliation: Department of Chemistry, Indian Institute of Technology Jodhpur , Jodhpur 342011, Rajasthan, India.
authors.forename: Ritu
authors.initials: R
authors.lastname: Gupta
authors.affiliation: Chemistry & Physics of Materials Unit and Thematic Unit of Excellence in Nanochemistry, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O., Bangalore 560064, India.
authors.forename: Aman
authors.initials: A
authors.lastname: Anand
authors.affiliation: Chemistry & Physics of Materials Unit and Thematic Unit of Excellence in Nanochemistry, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur P.O., Bangalore 560064, India.
authors.forename: Ankush
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Centre for Nano and Soft Matter Sciences , Jalahalli, Bangalore 560013, India.
authors.forename: G U
authors.initials: GU
authors.lastname: Kulkarni
keywords: Ag wire network; Transparent conducting electrodes; crackle template; oxidation resistant; roll coating; spray coating