期刊
IEEE ELECTRON DEVICE LETTERS
卷 32, 期 10, 页码 1349-1351出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2011.2163489
关键词
Flexible; graphene; polyimide; transistors
Transistors are constructed using chemical-vapor-deposited graphene on mechanically flexible polyimide and incorporate a low-temperature atomic-layer-deposited gate dielectric. Three-micrometer gate length transistors with V-ds = 2.0 V have a drive current of > 0.3 A/mm with a transconductance of > 3 mS/mm. The peak hole and electron mobilities are 295 and 106 cm(2)/V . s, respectively. Subsequent to repeated flexing, the ambipolar characteristics and extremely low gate leakage remain intact with < 15% reduction in the peak carrier mobility. Good agreement is obtained between the measured mobility and a physically based empirical model and is consistent with the mobility limited by impurity levels and surface roughness. Using graphene-on-polyimide transistors, radio-frequency functionalities, including signal amplification and phase shifting, are demonstrated, and routes for performance improvement are discussed. The results are important for the development of graphene-based electronics on mechanically flexible substrates.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据