Valence band structure and decay process in the inner-shell excitation of boron oxide
✍ Scribed by Yasuji Muramatsu; Hisataka Takenaka; Takashi Oyama; Takayoshi Hayashi; Melissa M. Grush; Rupert C. C. Perera
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 113 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0049-8246
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✦ Synopsis
The electronic structure and radiative/non-radiative decay processes in the inner-shell excitation of B 2 O 3 were investigated using soft x-ray emission and photoelectron spectroscopy. Based on density of states calculations, the electronic structure of B 2 O 3 as probed by x-ray emission spectroscopy (XES) and photoelectron spectroscopy (PES) arises from hybridized sp 2 -planar B-O bonding in B-O 3 triangular units. A fairly nondispersive band structure was also suggested by excitation energy-dependent XES. XES and PES indicated both a resonant radiative decay process and a resonant non-radiative decay process with p * excitation at the B K threshold. A small resonant radiative decay peak was observed with p * excitation at the O K threshold, probably due to a more weakly bound p * state at the O K threshold than at the B K threshold.