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Strain-relaxed nanocrystalline diamond thin films with silicon vacancy centers using femtosecond laser irradiation for photonic applications
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SYSNO ASEP 0579802 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Strain-relaxed nanocrystalline diamond thin films with silicon vacancy centers using femtosecond laser irradiation for photonic applications Tvůrce(i) Ondič, Lukáš (FZU-D) RID, ORCID
Trojánek, F. (CZ)
Varga, Marián (FZU-D) RID, ORCID
Fait, Jan (FZU-D) ORCIDCelkový počet autorů 4 Zdroj.dok. ACS Applied Nano Materials. - : American Chemical Society - ISSN 2574-0970
Roč. 6, č. 5 (2023), s. 3268-3276Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova diamond ; silicon vacancy centers ; photoluminescence ; fs-laser irradiation ; strain ; purification Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP GA19-14523S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora FZU-D - RVO:68378271 UT WOS 000937159400001 EID SCOPUS 85148996353 DOI 10.1021/acsanm.2c04976 Anotace Here we show that femtosecond (fs) laser pulses focused via a microscope objective on a nanocrystalline diamond thin film can be employed to reduce background photoluminescence intensity by a factor of 5 with respect to the luminescence of SiV centers. Raman spectra show that this decrease is mainly caused by laser ablation of the sp2-related carbon phase present in-between the grains. The reduction of the sp2 carbon phase also leads to a local decrease in the optical absorption followed by an almost twofold increase in the SiV emission peak intensity. Moreover, the fs-irradiation also entails the release of strain inside such a layer as manifested by the observed shift of the Raman diamond peak toward the value measured in the monocrystalline diamond and by a blue-shift of the zero-phonon-line peak position of the SiV centers. Such a finding might enable the improvement of the optical quality of the nanocrystalline diamond-based photonic nanostructures. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2024 Elektronická adresa https://hdl.handle.net/11104/0348601
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