The Effect of Boron on the Structure and Conductivity of Thin Films Obtained by Laser Ablation of Diamond with Deposition at 700°C


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Structural features of CBx films obtained by pulsed laser ablation of targets made of pressed diamond powder with boron-powder additions at B/C atomic ratio of x = 0.33 have been studied. The films were deposited on heated substrates, so that diffusion processes involving C and B atoms on the surface and in the volume of films were possible. Selected conditions of film deposition ensured their effective doping with boron (0.4 ≤ x ≤ 0.6). The incorporation of B atoms was accompanied by the formation of B–C chemical bonds, whereas the formation of sp2 graphite bonds and their ordering in clusters with laminar packing was suppressed. The films possessed very low resistivity (~1.4 mΩ cm) at room temperature and exhibited metallic type of conductance on decreasing the temperature to 77 K.

Sobre autores

R. Romanov

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Email: vyfominskij@mephi.ru
Rússia, Moscow, 115409

V. Fominski

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Autor responsável pela correspondência
Email: vyfominskij@mephi.ru
Rússia, Moscow, 115409

P. Zinin

Scientific and Technological Center of Unique Instrumentation

Email: vyfominskij@mephi.ru
Rússia, Moscow, 117342

I. Troyan

Crystallography and Photonics Federal Scientific Research Center

Email: vyfominskij@mephi.ru
Rússia, Moscow, 117342

D. Fominski

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Email: vyfominskij@mephi.ru
Rússia, Moscow, 115409

P. Dzhumaev

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)

Email: vyfominskij@mephi.ru
Rússia, Moscow, 115409

V. Filonenko

Institute for High Pressure Physics

Email: vyfominskij@mephi.ru
Rússia, Troitsk, Moscow, 142190

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