Electron Energy-Loss Spectroscopy Study of the Electronic Structure of Li- and V-Dopedβ-Rhombohedral Boron

✍ Scribed by Masami Terauchi; Yosuke Kawamata; Michiyoshi Tanaka; Hirofumi Matsuda; Kaoru Kimura

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 224 KB
• Volume: 133
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1997.7335

✦ Synopsis

Electron energy-loss spectra of Li-and V-doped -rhombohedral boron ( -r-B) were measured from perfect crystalline areas of 180 nm in diameter. The onset of spectra of Li-doped -r-B was observed at about 1.5 eV, but that of V-doped -r-B was not clearly observed. The volume plasmon peaks of Li-and V-doped -r-B were observed at 23.1 and 23.6 eV, respectively. The energy onset of the B K-shell excitation spectra of V-doped -r-B was lower than that of -r-B by 0.9 eV. The lower onset indicates a decrease of the band gap energy with V-doping. Such a decrease of the energy onset was not observed in Li-doped -r-B.