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The Anomalous Formation of Irradiation Induced Nitrogen-Vacancy Centers in 5-Nanometer-Sized Detonation Nanodiamonds
https://repo.qst.go.jp/records/85696
https://repo.qst.go.jp/records/856960f92eedd-16f9-455e-a958-95551e388a23
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-03-01 | |||||
| タイトル | ||||||
| タイトル | The Anomalous Formation of Irradiation Induced Nitrogen-Vacancy Centers in 5-Nanometer-Sized Detonation Nanodiamonds | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
So, Frederick
× So, Frederick× I. Shames, Alexander× Daiki, Terada× Takuya, Genjo× Morishita, Hiroki× Izuru, Ohki× Takeshi, Ohshima× Shinobu, Onoda× Takashima, Hideaki× Takeuchi, Shigeki× Mizuochi, Norikazu× Ryuji, Igarashi× Masahiro, Shirakawa× F. Segawa, Takuya× So, Frederick× Daiki, Terada× Takuya, Genjo× Izuru, Ohki× Takeshi, Ohshima× Shinobu, Onoda× Ryuji, Igarashi× Masahiro, Shirakawa |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Nanodiamonds containing negatively-charged Nitrogen-Vacancy (NV-) centers are versatile room-temperature quantum sensors in a growing field of research. Yet, knowledge regarding the formation mechanism in very small particles is still limited. Here, the study was focused on the formation of the smallest NV--containing diamonds, 5 nm detonation nanodiamonds (DNDs). As a reliable method to quantify NV- centers in nanodiamonds, half-field signals in electron paramagnetic resonance (EPR) spectroscopy are recorded. By comparing the NV- concentration in a series of nanodiamonds (5 - 100 nm), it was shown that the formation process in DNDs is unique in several aspects. NV- centers in DNDs are already formed during electron irradiation, without the need for high-temperature annealing. The effect was interpreted in terms of “self-annealing”, where size and type dependent effects enable vacancy migration at lower temperature. Although NV- concentration increases with particle size, the NV- concentration in NDs surpasses that of 20 nm-sized nanodiamonds. Using Monte-Carlo simulations, we show that the higher substitutional Nitrogen concentration compensates the vacancy loss induced by the large particle surface. Upon 1.5 × 1019 e-/cm2 electron irradiation, DNDs show a 12.5-fold NV- increment with no sign of saturation. These findings can be of interest for the creation of defects in other very small semiconductor nanoparticles. | |||||
| 書誌情報 |
The Journal of Physical Chemistry C 巻 126, 号 11, p. 5206-5217, 発行日 2022-03 |
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| 出版者 | ||||||
| 出版者 | American Chemical Society Publications | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1932-7447 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1021/acs.jpcc.1c10466 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1021/acs.jpcc.1c10466 | |||||
