| Enhanced and switchable silicon-vacancy photoluminescence in air-annealed nanocrystalline diamond films | |
| Yang, Bing1; Yu, Biao1,2; Li, Haining1,2; Huang, Nan1; Liu, Lusheng1; Jiang, Xin1,3 | |
| Corresponding Author | Yang, Bing(byang@imr.ac.cn) ; Jiang, Xin(xjiang@imr.ac.cn) |
| 2020 | |
| Source Publication | CARBON
 |
| ISSN | 0008-6223 |
| Volume | 156Pages:242-252 |
| Abstract | Silicon vacancy (SiV) centers in CVD-deposited nanodiamond particles or films always exhibit a photoluminescent (PL)-quenching behavior. Herein, in order to overcome this issue, air annealing of nanocrystalline diamond (NCD) films with uniform doping of Si atoms is employed to improve the PL emission efficiency of SiV centers. Without severe mass loss in diamond, SiV centers exhibit an increased PL emission intensity at 738 nmwith an increased annealing temperature and time. In comparison to the untreated film, the maximum PL enhancement reaches about 200 and 1473 folds when the NCD films are annealed at 600 degrees C for 60 min and 700 degrees C for 20 min, respectively. Such giant increase in SiV PL emission is mainly attributed to the transition of diamond surface from hydrogen to oxygen termination together with the optimized crystalline quality of the annealed films, as confirmed by the HRTEM, Raman and XPS measurements. A schematic model based on the theory of surface band bending is proposed to elucidate the mechanism of the SiV PL enhancement in oxygen-terminated NCD films: a near-surface light trap layer formed in hydrogen-terminated NCD is converted during the oxidation process, leading to the additional collection of SiV PL emission from the inner layer. (C) 2019 Elsevier Ltd. All rights reserved. |
| Keyword | Color center Nano-crystalline diamond Luminescence Surface modification Thermal treatment |
| Funding Organization | National Natural Science Foundation of China |
| DOI | 10.1016/j.carbon.2019.09.054 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51872294] |
| WOS Research Area | Chemistry ; Materials Science |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000509332200023 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136733 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yang, Bing; Jiang, Xin |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Univ Siegen, Inst Mat Engn, Paul Bonatz Str 9-11, D-57076 Siegen, Germany |
| Recommended Citation GB/T 7714 | Yang, Bing,Yu, Biao,Li, Haining,et al. Enhanced and switchable silicon-vacancy photoluminescence in air-annealed nanocrystalline diamond films[J]. CARBON,2020,156:242-252. |
| APA | Yang, Bing,Yu, Biao,Li, Haining,Huang, Nan,Liu, Lusheng,&Jiang, Xin.(2020).Enhanced and switchable silicon-vacancy photoluminescence in air-annealed nanocrystalline diamond films.CARBON,156,242-252. |
| MLA | Yang, Bing,et al."Enhanced and switchable silicon-vacancy photoluminescence in air-annealed nanocrystalline diamond films".CARBON 156(2020):242-252. |
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