Growth and electrical characterisation of 6-doped boron layers on (111) diamond surfaces

被引:37
作者
Edgington, Robert [1 ,2 ]
Sato, Syunsuke [3 ]
Ishiyama, Yuichiro [3 ]
Morris, Richard [4 ]
Jackman, Richard B. [1 ,2 ]
Kawarada, Hiroshi [3 ]
机构
[1] UCL, London Ctr Nanotechnol, London WC1H 0AH, England
[2] UCL, Dept Elect & Elect Engn, London WC1H 0AH, England
[3] Waseda Univ, Dept Elect & Photon Syst, Shinjuku Ku, Tokyo 1698555, Japan
[4] Univ Warwick, Dept Phys, Adv SIMS Projects, Coventry CV4 7AL, W Midlands, England
基金
英国工程与自然科学研究理事会;
关键词
DELTA-DOPED DIAMOND; ELECTRONIC-PROPERTIES; TERMINATED DIAMOND; FABRICATION; DEPENDENCE;
D O I
10.1063/1.3682760
中图分类号
O59 [应用物理学];
学科分类号
摘要
A plasma enhanced chemical vapor deposition protocol for the growth of (delta-doping of boron in diamond is presented, using the (111) diamond plane as a substrate for diamond growth. AC Hall effect measurements have been performed on oxygen terminated delta-layers and desirable sheet carrier densities (similar to 10(13) cm(-2)) for field-effect transistor application are reported with mobilities in excess of what would expected for equivalent but thicker heavily boron-doped diamond films. Temperature-dependent impedance spectroscopy and secondary ion mass spectroscopy measurements show that the grown layers have metallic-like electrical properties with high cut-off frequencies and low thermal impedance activation energies with estimated boron concentrations of approximately 10(20) cm(-3). (C) 2012 American Institute of Physics. [doi:10.1063/1.3682760]
引用
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页数:7
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