期刊
ADVANCED FUNCTIONAL MATERIALS
卷 29, 期 3, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201805242
关键词
carrier transfer; chemical vapor deposition; freestanding diamond nanosheets; graphene; heterojunction
类别
资金
- Polish National Science Centre (NCN) [2015/16/T/ST7/00469, 2016/21/B/ST7/01430, 2016/22/E/ST7/00102, 2014/14/M/ST5/00715]
- National Centre for Science and Development Grant Techmatstrateg [347324]
- US DOE [DE-SC0014607]
- Science for Peace Programme of NATO [G5147]
- Faculty of Electronics, Telecommunications, and Informatics of the Gdansk University of Technology
- U.S. Department of Energy (DOE) [DE-SC0014607] Funding Source: U.S. Department of Energy (DOE)
Many material device applications would benefit from thin diamond coatings, but current growth techniques, such as chemical vapor deposition (CVD) or atomic layer deposition require high substrate and gas-phase temperatures that would destroy the device being coated. The development of freestanding, thin boron-doped diamond nanosheets grown on tantalum foil substrates via microwave plasma-assisted CVD is reported. These diamond sheets (measuring up to 4 x 5 mm in planar area, and 300-600 nm in thickness) are removed from the substrate using mechanical exfoliation and then transferred to other substrates, including Si/SiO2 and graphene. The electronic properties of the resulting diamond nanosheets and their dependence on the free-standing growth, the mechanical exfoliation and transfer processes, and ultimately on their composition are characterized. To validate this, a prototypical diamond nanosheet-graphene field effect transistor-like (DNGfet) device is developed and its electronic transport properties are studied as a function of temperature. The resulting DNGfet device exhibits thermally activated transport (thermionic conductance) above 50 K. Below 50 K a transition to variable range hopping is observed. These findings demonstrate the first step towards a low-temperature diamond-based transistor.
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