Large-area graphene synthesized by a chemical vapor deposition (CVD) method is promising for a flexible, stretchable transparent electrode but suffers from structural defects such as grain boundaries, which causes to degrade its physical properties. Recently, preparation methods of large-scale growth templates for single-crystalline graphene (SCG) were reported, but the macroscopic properties of SCG have not been adequately examined yet. Here, an SCG-based flexible, stretchable graphene transparent electrode is successfully demonstrated, which shows superior optoelectrical, electromechanical, and barrier properties compared to polycrystalline graphene (PCG)-based transparent electrodes. The result exhibits the grain boundary effect of graphene on soft substrates on a macroscopic scale and a great promise toward realizing a tremendous performance improvement of graphene-based flexible transparent electrodes on a large scale.
2021年3月8日Ji Soo Roh, Jun Kyu Jang, Nayoung Kwon, Shingyu Bok, Yu Jin Kim, Cheolho Jeon, Hee Wook Yoon, Hyo Won Kim, Byungkwon Lim, Ho Bum Park通过...用于透明电极应用的软基底上的单晶和多晶石墨烯的宏观性能; Ji Soo Roh, Jun Kyu Jang, Nayoung Kwon, Shingyu Bok, Yu Jin Kim, Cheolho Jeon, Hee Wook Yoon, Hyo Won Kim, Byungkwon Lim, Ho Bum Park; Carbon; Carbon; X-MOL通过化学气相沉积（CVD）方法合成的大面积石墨烯有望用于柔性，可拉伸的透明电极，但存在诸如晶界之类的结构缺陷，这会导致其物理性能下降。近年来，已经报道了用于单晶石墨烯（SCG）的大规模生长模板的制备方法，但是尚未充分检查SCG的宏观性质。在这里，成功地展示了基于SCG的柔性可拉伸石墨烯透明电极，与基于多晶石墨烯（PCG）的透明电极相比，它具有优异的光电，机电和阻隔性能。用于透明电极应用的软基底上的单晶和多晶石墨烯的宏观性能,Carbon
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