Effect of H-Terminated Surfaces on "Silicon-Vacancy" Fluorescence in High-Pressure Nanodiamonds.
| Title: | Effect of H-Terminated Surfaces on "Silicon-Vacancy" Fluorescence in High-Pressure Nanodiamonds. |
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| Authors: | Pasternak DG; Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., Moscow 119991, Russia.; Zhivopistsev AA; Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., Moscow 119991, Russia.; Romshin AM; Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., Moscow 119991, Russia.; Kudryavtsev OS; Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., Moscow 119991, Russia.; Bagramov RH; Vereshchagin Institute of High-Pressure Physics of the Russian Academy of Sciences, 14 Kaluzhskoe Shosse, Troitsk, Moscow 108840, Russia.; Filonenko VP; Vereshchagin Institute of High-Pressure Physics of the Russian Academy of Sciences, 14 Kaluzhskoe Shosse, Troitsk, Moscow 108840, Russia.; Kargin NI; Institute of Nanoengineering in Electronics, Spintronics and Photonics, National Research Nuclear University MEPhI, 31 Kashirskoe Shosse, Moscow 115409, Russia.; Vlasov II; Prokhorov General Physics Institute of the Russian Academy of Sciences, 38 Vavilov Str., Moscow 119991, Russia. |
| Source: | Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2025 Dec 05; Vol. 15 (24). Date of Electronic Publication: 2025 Dec 05. |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: MDPI AG Country of Publication: Switzerland NLM ID: 101610216 Publication Model: Electronic Cited Medium: Print ISSN: 2079-4991 (Print) Linking ISSN: 20794991 NLM ISO Abbreviation: Nanomaterials (Basel) Subsets: PubMed not MEDLINE |
| Imprint Name(s): | Original Publication: Basel, Switzerland : MDPI AG, [2011]- |
| Abstract: | A new generation of fluorescent diamond nanoparticles synthesized from hydrocarbons at high pressure appears to be promising for the design of efficient single-photon diamond sources and nanometer-sized optical sensors. A characteristic feature of such nanodiamonds (NDs) is the termination of their surface with hydrogen. This hydrogen induces the formation of free holes at the diamond surface, thereby affecting the charge state of nearby fluorescent centers. In this study, the effect of the H-terminated ND surface on negatively charged silicon-vacancy (SiV-) fluorescence as a function of the ND size was investigated. Raman, photoluminescence and scanning electron microscopy techniques were used to characterize the NDs. Diamond nanoparticles of various sizes in the 50-300 nm range were analyzed before and after H desorption from their surface. It was shown that a significant increase in SiV- fluorescence (>50%) upon hydrogen removal starts for particles smaller than 100 nm. The effective thickness of the diamond surface layer, within which charge neutralization of SiV- centers occurs under the hydrogen influence, was determined to be 6 nm. |
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| Grant Information: | 075-15- 2025-609 Ministry of Science and Higher Education of the Russian Federation |
| Contributed Indexing: | Keywords: H-terminated surface; fluorescence; high-pressure synthesis; nanodiamond; silicon-vacancy center |
| Entry Date(s): | Date Created: 20251224 Date Completed: 20251224 Latest Revision: 20251226 |
| Update Code: | 20260130 |
| PubMed Central ID: | PMC12736348 |
| DOI: | 10.3390/nano15241842 |
| PMID: | 41441456 |
| Database: | MEDLINE |
Journal Article