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Interaction between alkali metals and diamond: Etching and charge states of NV centers
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| Title: | Interaction between alkali metals and diamond: Etching and charge states of NV centers |
| Authors: | Takehana, Hiroki Browse this author | | Yamane, Ichiro Browse this author | | Yanase, Takashi Browse this author | | Nagahama, Taro Browse this author →KAKEN DB | | Shimada, Toshihiro Browse this author →KAKEN DB |
| Keywords: | Diamond | | Alkali metals | | NV center | | Etching | | Band bending |
| Issue Date: | Sep-2021 |
| Publisher: | Elsevier |
| Journal Title: | Carbon |
| Volume: | 182 |
| Start Page: | 585 |
| End Page: | 592 |
| Publisher DOI: | 10.1016/j.carbon.2021.06.059 |
| Abstract: | Single crystal diamond particles were heated with liquid phase alkali metals (Li, Na, K) in an argon atmosphere. It was found that Li reacts with the diamond above 600 degrees C, Na makes the surface rougher on a nm scale at 800 degrees C, and K did not change the surface morphology. The etching speed by the reaction with Li is the fastest on the (001) surface. Photoluminescence of the NV- (negatively charged nitrogen vacancy) center decreased only after the annealing with K. DFT calculations explained the strong chemical interaction between Li and the diamond (001) surfaces, and upward band bending at the interfaces with Na and K. The behavior of the NV-center photoluminescence is consistent with the extent of band bending. (C) 2021 Elsevier Ltd. All rights reserved. |
| Rights: | ©2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/89934 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 島田 敏宏
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