Laser-patterned boron-doped diamond electrodes with precise control of sp.sup.2./sup./sp.sup.3./sup. carbon lateral distribution

0576402 - FZÚ 2024 RIV NL eng J - Journal Article
Hrabovský, Jan - Zelenský, M. - Sládek, Juraj - Zukerstein, Martin - Fischer, J. - Schwarzová-Pecková, K. - Taylor, Andrew - Veis, M. - Mandal, S. - Williams, O.A. - Bulgakova, Nadezhda M.
Laser-patterned boron-doped diamond electrodes with precise control of sp²/sp³ carbon lateral distribution.
Applied Surface Science. Roč. 639, Dec. (2023), č. článku 158268. ISSN 0169-4332. E-ISSN 1873-5584
R&D Projects: GA MŠMT EF15_003/0000445; GA ČR(CZ) GA23-05688S
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445
Institutional support: RVO:68378271
Keywords : boron-doped diamond * laser micromachining * Raman spectroscopy * electrochemical properties * chemical mechanical polishing * sp² carbon
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 6.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.apsusc.2023.158268

A thorough study on sp3 to sp2 carbon conversion in undoped and boron-doped diamond (BDD) thin ( 500 nm) layers leading to the desired sp2/sp3 carbon ratio and lateral distribution, which utilizes boron atom incorporation and infrared (IR) material laser processing has been performed. Polycrystalline as-grown (AG) or chem-mechanically polished (CMP) undoped diamond/BDD layers were investigated with respect to boron content and laser wavelength (800, 1030 nm). Boron incorporation leads to an increase in IR optical absorption and reduction of required energy fluence ( th 1 J cm−2) needed for sp3 to sp2 carbon conversion. Raman spectroscopy was performed to identify carbon conversion stages and to tailor the ideal parameters for other IR laser sources and required sp2/sp3 carbon ratio. Electrochemical parameters ( p and Ap/ Cp ratio) were obtained from cyclic voltammetry measurements of outer-([Ru(NH3)6]3＋/2＋) and inner-([Fe(CN)6]3−/4−) sphere redox markers.

Permanent Link: https://hdl.handle.net/11104/0347009