1. Far-UV-Excited Luminescence of Nitrogen-Vacancy Centers: Evidence for Diamonds in Space.
- Author
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Lu, Hsiao ‐ Chi, Peng, Yu ‐ Chain, Chou, Sheng ‐ Lung, Lo, Jen ‐ Iu, Cheng, Bing ‐ Ming, and Chang, Huan ‐ Cheng
- Subjects
LUMINESCENCE spectroscopy ,NITROGEN ,VACANCIES in crystals ,DIAMONDS ,SOLID state chemistry ,SYNCHROTRON radiation - Abstract
The nitrogen-vacancy (NV) centers in diamond are among the most thoroughly investigated defects in solid-state matter; however, our understanding of their properties upon far-UV excitation of the host matrix is limited. This knowledge is crucial for the identification of NV as the carrier of extended red emission (ERE) bands detected in a wide range of astrophysical environments. Herein, we report a study on the photoluminescence spectra of NV-containing nanodiamonds excited with synchrotron radiation over the wavelength range of 125-350 nm. We observed, for the first time, an emission at 520-850 nm with a quantum yield greater than 20 %. Our results share multiple similarities with the ERE phenomena, suggesting that nanodiamonds are a common component of dust in space. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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