Oxygen-incorporated single-photon sources observed at the surface of silicon carbide crystals
Oxygen-incorporated single-photon sources observed at the surface of silicon carbide crystals
复制标题
在碳化硅晶体表面观察到的掺氧单光子源
DOI:
10.1088/2399-6528/aaede4
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
T. Ohshima
中科院分区:
文献类型:
--
作者:
Y. Hijikata;T. Horii;Y. Furukawa;Y. Matsushita;T. Ohshima
The formation of high-brightness single-photon sources (SPSs) that emit single photons at room temperature was recently confirmed in oxygen-annealed SiC semiconductors (surface SPSs.) However, the defect structure of surface SPSs remains unclear, which makes device fabrication and property control difficult. To verify the incorporation of oxygen in surface SPSs, we fabricated SPSs using stable 18 O isotopes as oxidants. By comparing this to the case of natural oxygen annealing, we found that the SP emission spectra for the 18 O sample tended to have shorter peak wavelengths, slightly narrower peak widths, and higher intensities. Thus, it appeared that, in the case of the 18 O sample, the phonon sideband was located closer to the zero-phonon line and that oxygen was incorporated into the defects attributed to the surface SPS.
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