ELFT HÍRADÓ

[Szeminárium koordinátor <szfi-seminar AT wigner.hun-ren.hu>]

SZFI Seminar
Rohit Babar
(Wigner FK SZFI)
Carbon impurities at grain boundaries and Stone-Wales defects in hBN as 
potential single photon emitters
Hexagonal boron nitride (hBN) has emerged as a viable host for point defects 
with bright, room temperature single photon emission. The large-scale 
synthesis of hBN often introduces extended defects in addition to the 
presence of point defects. We carry out density functional theory 
calculations to investigate carbon impurities combined with topological 
defects and grain boundaries in hBN. The inclusion of carbon impurities at 
grain boundaries can resolve energetic B-B and N-N bonds and result in 
energetically preferable atomic structures. In addition, we find the presence 
of carbon atoms can give rise to optical transitions in the visible spectral 
range. Our work sheds light on a new class of defects that may appear at 
highly strained areas and grain boundaries in hBN, where bright single photon 
emitters have already been observed.Thursday, 20 June 2024, 10:00
Wigner FK SZFI, Bldg. 1, 2nd floor auditorium
Language of the talk: English
All interested are welcome!
Attila Nagyszfi-seminar AT wigner.hun-ren.hu