Luminescence systems in diamond at 489 nm

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In the photoluminescence spectra of natural type Ia diamond crystals, a zero-phonon line with a position of 488.9 nm (2.53 eV) is observed. The excitation spectrum of the system is mirror to the emission spectrum. The 488.9 nm line has phonon repetitions corresponding to an energy of 0.073 eV. A change in temperature from 77 to 313 K shifts the position of the system by 1.01 nm toward the red region, and the decrease in intensity and broadening of full width at half maximum is non-linear. The characteristics of the electron-phonon interaction and distribution in the bulk of the crystals of a defect with a zero-phonon line of 488.9 nm are like the characteristics of defects of a nitrogen-vacancy nature.

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Sobre autores

S. Lepekha

Zavaritsky Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences

Autor responsável pela correspondência
Email: Lepekha@igg.uran.ru
Rússia, Yekaterinburg

E. Vasilyev

Saint Petersburg Mining University

Email: Lepekha@igg.uran.ru
Rússia, Saint Petersburg

A. Kobuzov

Zavaritsky Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences

Email: Lepekha@igg.uran.ru
Rússia, Yekaterinburg

D. Zedgenizov

Zavaritsky Institute of Geology and Geochemistry of the Ural Branch of the Russian Academy of Sciences

Email: Lepekha@igg.uran.ru
Rússia, Yekaterinburg

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2. Fig. 1. Emission spectra at 360 and 440 nm excitation (a, d) and excitation at 496, 489 nm registration (b, c) of FL of synthetic diamond crystal with 489 nm line (T = 77 K)

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3. Fig. 2. Emission spectrum at 440 nm excitation (a) and excitation at 520, 489 nm registration (b, c) of the FL of natural diamond crystal with 489 nm line (T = 77 K)

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4. Fig. 3. Emission spectra of the phonon-free 488.9 nm line obtained by changing the temperature from 77 to 313 K (a). Temperature dependences of the 488.9 nm line parameters: peak energy (position) (b), FWHM spectral line width (c), inverse intensity (d). Dots indicate experimental data, the line is the result of approximation

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