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.
Department of Chemistry, Indian Institute of Technology Jodhpur , Jodhpur 342011, Rajasthan, India.
ACS Appl Mater Interfaces. 2015 Dec 16;7(49):27215-22. doi: 10.1021/acsami.5b08171. Epub 2015 Dec 4.
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.
滚涂和喷涂方法已被用于通过使用裂纹光刻技术的简单溶液工艺来制造高度抗氧化的透明和导电电极 (TCE)。我们已经喷涂了一种基于裂纹漆的前体，以在安装在卷对卷涂布机上的 PET 辊上产生高度互连的裂纹网络，该卷对卷涂布机的网带速度为 0.6 m/min。通过在裂纹模板上喷涂 Ag 前体墨水，然后进行脱模和在环境条件下退火，得到了透光率为 78%、方阻约为 20 Ω/□的 Ag TCE。Ag 金属网在弯曲和超声测试中稳定，但容易在空气中氧化。当用电镀方法涂覆 Pd 时，其对恶劣氧化条件的坚固性得到了增强。仅使用少量 Ag 作为种子层并通过化学镀方法生长 Cu 金属网，也实现了低成本透明电极。因此，即使在环境气氛下，Ag/Cu 金属网也能稳定存在一年以上。
