Naslov
Direct observation of defect levels in hexagonal BN by soft x-ray absorption spectroscopy

Autori
Božanić, Ana ; Petravić, Mladen ; Fan L.-J. ; Yang, Y.-W. ; Chen, Y.

Izvornik
Chemical physics letters (0009-2614) 472 (2009); 190-193

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, pismo, znanstveni

Ključne riječi
h-BN; NEXAFS

Sažetak
Formation of defects in hexagonal boron nitride under low- energy argon bombardment has been studied by near-edge X- ray absorption fine structure (NEXAFS) around B and N K-edges. Breaking of B– N bonds and creation of nitrogen vacancies has been identified from the B K-edge, followed by the formation of molecular nitrogen, N2, at interstitial positions. The presence of N2 produces a sharp resonance in the low-resolution NEXAFS spectra around N K-edge, showing the characteristic vibrational fine structure in high-resolution measurements. Several new peaks in NEXAFS spectra have been assigned to boron or nitrogen interstitials, in good agreement with theoretical predictions.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA