Center for Optoelectronics Materials and Devices, Department of Physics, Bio-x Center, Zhejiang Sci-Tech University , Hangzhou 310018, China.
ACS Appl Mater Interfaces. 2014 Jan 8;6(1):622-9. doi: 10.1021/am404708z. Epub 2013 Dec 13.
Large-area Cu nanosheets are synthesized by a strategy of Cu nanocrystal self-assembly, and then aqueous conductive Cu nanosheet ink is successfully prepared for direct writing on the conductive circuits of flexible electronics. The Cu nanocrystals, as building blocks, self-assemble along the [111] direction and grow into large-area nanosheets approximately 30-100 μm in diameter and a few hundred nanometers in thickness. The laminar stackable patterns of the Cu nanosheet circuits increase the contact area of the Cu nanosheets and improve the stability of the conductor under stress, the result being that the Cu nanosheet circuits display excellent conductive performance during repeated folding and unfolding. Moreover, heterostructures of Ag nanoparticle-coated Cu nanosheets are created to improve the thermal stability of the nanosheet circuits at high temperatures.
大面积的 Cu 纳米片是通过 Cu 纳米晶自组装的策略合成的，然后成功制备了水性导电 Cu 纳米片油墨，可直接写入柔性电子的导电电路上。Cu 纳米晶作为构建块，沿[111]方向自组装并生长成大面积的纳米片，直径约为 30-100μm，厚度为数百度纳米。Cu 纳米片电路的层状可堆叠图案增加了 Cu 纳米片的接触面积，并提高了在应力下导体的稳定性，结果是 Cu 纳米片电路在反复折叠和展开时表现出优异的导电性能。此外，还创建了 Ag 纳米粒子涂覆的 Cu 纳米片的异质结构，以提高纳米片电路在高温下的热稳定性。
