Photoluminescence of nanodiamonds influenced by charge transfer from silicon and metal substrates

0470478 - FZÚ 2017 RIV CH eng J - Článek v odborném periodiku
Stehlík, Štěpán - Ondič, Lukáš - Berhane, A. M. - Aharonovich, I. - Girard, H.A. - Arnault, J.-C. - Rezek, Bohuslav
Photoluminescence of nanodiamonds influenced by charge transfer from silicon and metal substrates.
Diamond and Related Materials. Roč. 63, Mar (2016), s. 91-96. ISSN 0925-9635. E-ISSN 1879-0062
Grant CEP: GA ČR GA15-01809S
Institucionální podpora: RVO:68378271
Klíčová slova: nanodiamonds * photoluminescence * electrostatic charging * nanoparticles * interfaces
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.561, rok: 2016

Photoluminescence of 5 nm detonation nanodiamonds (DNDs) is studied as a function of their surface treatment (hydrogenation/oxidation) and underlying substrate materials (silicon, gold, platinum, and nickel). The substrates affect DND photoluminescence emission spectrum and lifetime in the spectral range of 600–800 nm. The dependence is different for hydrogenated and oxidized DNDs. We attribute these effects to different electrostatic charging of DNDs on the substrates with different work functions (4.4 to 5.5 eV). We discuss the data based on naturally present NV centers, their phonon sideband, and surface related non-radiative transitions.
Trvalý link: http://hdl.handle.net/11104/0268105