Surface-related 2D conductivity of nanocrystalline diamond in-plane nanowires

0372612 - FZÚ 2012 AT eng A - Abstract
Rezek, Bohuslav - Babchenko, Oleg - Vetushka, Aliaksi - Ledinský, Martin - Kromka, Alexander
Surface-related 2D conductivity of nanocrystalline diamond in-plane nanowires.
Abstract Book IWEPNM 2011. Kirchberg: N, 2011 - (Machon, M.). s. 153-154. ISBN N.
[International Winterschool on Electronic Properties of Novel Materials /25./. 26.02.2011-05.03.2011, Kirchberg]
R&D Projects: GA ČR GD202/09/H041; GA MŠMT(CZ) LC06040; GA AV ČR KAN400100701; GA MŠMT LC510
Institutional research plan: CEZ:AV0Z10100521
Keywords : diamond * nanowires * conductivity
Subject RIV: BM - Solid Matter Physics ; Magnetism

We report on fabrication, structure, and electronic properties of in-plane nanocrystalline diamond nanowires. By employing electron beam lithography, polymer wires are prepared on diamond seeding layer. After selective removing of diamond seeds outside the wires using BOE, diamond nanowires (140 to 500 nm wide, 2-5 um long) are grown by MW-CVD. We characterize their morphology by SEM and AFM, composition by micro-Raman, and present 3D growth model. Electronic conduction is measured using nanomanipulators with current probes. By comparing conduction of nanowires with as-grown, H- and O-terminated surface we demonstrate transfer p-doping of intrinsic nanowires which gives rise to surface-related 2D conduction. This proves high electronic quality of the nanowires and facilitates their use as nanosensors.
Permanent Link: http://hdl.handle.net/11104/0205884