Carbon cluster emitters in silicon carbide

نویسندگان

چکیده

Defect qubits in 4H-SiC are outstanding candidates for numerous applications the rapidly emerging field of quantum technology. Carbon clusters can act as emission sources that may appear after thermal oxidation or during irradiation, which kicks out carbon atoms from their sites. These fluorescent could interfere with already established vacancy-related generated irradiation techniques. In this study, we systematically investigate electronic structure, formation energy, dissociation vibrational properties, and full fluorescence spectrum involving up to four by means density functional theory calculations. All possible local configurations these carefully evaluated. We find vibronic properties depend strongly on configuration lattice. By comparing calculated previously observed spectra 4H-SiC, identify several stable visible emitters 4H-SiC. The paired interstitial defects identified source 463-nm triplet 456.6-nm emitters. 471.8-nm emitter is associated tricarbon antisite clusters. Our findings provide plausible explanation origin lines propose clusters, helpful information processing application through

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Carbon p Electron Ferromagnetism in Silicon Carbide

Ferromagnetism can occur in wide-band gap semiconductors as well as in carbon-based materials when specific defects are introduced. It is thus desirable to establish a direct relation between the defects and the resulting ferromagnetism. Here, we contribute to revealing the origin of defect-induced ferromagnetism using SiC as a prototypical example. We show that the long-range ferromagnetic cou...

متن کامل

Superhydrophobic carbon nanotube/silicon carbide nanowire nanocomposites

a r t i c l e i n f o The composite film of carbon nanotubes and silicon carbide nanowires was synthesized directly on the silicon substrate by the catalyst-assisted method. The carbon nanotubes crimped together decorated with silicon carbide nanowires covering the whole substrate. The appropriate amount of aluminum powders is a crucial factor to achieve the composite film. The composite film e...

متن کامل

The Mechanical and Electronic Properties of Carbon-Rich Silicon Carbide

A systematic investigation of structural, mechanical, anisotropic, and electronic properties of SiC₂ and SiC₄ at ambient pressure using the density functional theory with generalized gradient approximation is reported in this work. Mechanical properties, i.e., the elastic constants and elastic modulus, have been successfully obtained. The anisotropy calculations show that SiC₂ and SiC₄ are both...

متن کامل

Graphene Formation on the Carbon face of Silicon Carbide

In this thesis, we study the structure of epitaxial graphene formed on polar faces of SiC the (0001) face, also known as the Si-face, and the (0001 ) face, known as the C-face. On both polar surfaces, graphene films are prepared in ultra-high vacuum (UHV), in environments either of argon or cryogenically purified neon, or in a low-pressure background of disilane. Characterization of graphene is...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical review

سال: 2023

ISSN: ['0556-2813', '1538-4497', '1089-490X']

DOI: https://doi.org/10.1103/physrevb.108.085201