Development of graphene-metal film composite high-current carrying electrodes

石墨烯-金属膜复合高载流电极的研制

• 批准号: 535816-2018
• 负责人: Adachi, Michael
• 金额: $ 1.82万
• 依托单位: Simon Fraser University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=643427
• 关键词: Development; graphene; metal; film; composite

Cooledge Lighting products consist of light emitting diodes (LEDs) that are fabricated on flexible printed circuit boards (PCBs). The PCBs consist of copper (Cu) traces laminated to a polymeric substrate. Copper is used because it is straightforward to pattern using wet chemical etching and component attach is straightforward using well-established solder techniques. Disadvantages of Cu include relatively high cost, the requirement of non-environmentally friendly wet chemical etch processes and relatively high cost for prototyping and customized manufacturing. An alternate approach would be to print the conductors using an environmentally friendly process. To date, printed conductive inks have much less current-carrying capability than copper due to the 5x lower bulk conductivity of inks compared to bulk metal and the inability to print thick conductive electrodes. ****The proposed project investigates the fabrication and characterization of graphene-metal film composite materials. Graphene has many unique properties than exceed those of any other materials including having one million times current carrying capability than Cu, ultra-high room temperature electron mobility, and very high thermal conductivity of > 3000 WmK-1. The disadvantage of graphene is difficulty in preparing low-cost and high electronic quality material. Graphene-metal film composite materials will be fabricated in a class-1000 cleanroom, and characterized as a function of sheet resistance per thickness and maximum current carrying capability. The collaboration between Dr Adachi's team and Cooledge Lighting will lead to new knowledge and advanced manufacturing process techniques for preparing graphene-metal composite materials and result in training of two highly qualified personnel. The long-term goal is to demonstrate high current carrying capability using flexible graphene that can exceed that of the metal alone. The development of low-cost high current carrying electrodes has potential applications in the broader electronics industries. **

Cooledge Lighting产品由在柔性印刷电路板（PCB）上制造的发光二极管（LED）组成。PCB由层压到聚合物基板上的铜（Cu）走线组成。使用铜是因为它可以直接使用湿法化学蚀刻进行图案化，并且使用成熟的焊接技术可以直接进行组件附着。Cu的缺点包括相对高的成本、对非环境友好的湿法化学蚀刻工艺的要求以及原型和定制制造的相对高的成本。另一种方法是使用环保工艺印刷导体。迄今为止，印刷的导电油墨具有比铜小得多的载流能力，这是由于油墨的体导电率比体金属低5倍，并且不能印刷厚的导电电极。* 拟议项目研究石墨烯-金属膜复合材料的制造和表征。石墨烯具有超过任何其他材料的许多独特性质，包括具有比Cu高一百万倍的载流能力、超高室温电子迁移率和> 3000 WmK-1的非常高的热导率。石墨烯的缺点是难以制备低成本和高电子质量的材料。石墨烯-金属膜复合材料将在1000级洁净室中制造，并表征为单位厚度薄层电阻和最大载流能力的函数。阿达奇博士的团队与Cooledge Lighting之间的合作将为制备石墨烯-金属复合材料带来新的知识和先进的制造工艺技术，并培养两名高素质的人员。长期目标是使用柔性石墨烯来展示高载流能力，这种能力可以超过单独的金属。低成本高载流电极的开发在更广泛的电子工业中具有潜在的应用。 **