Experimental determination of solidified lithium disilicate crystal bandgap energy using EELS and XPS

Masanori Tashiro, Sohei Sukenaga, Sakiko Kawanishi, Yohei Sato, Yuji Takakuwa, Hiroyuki Shibata

研究成果: ジャーナルへの寄稿学術論文査読

6 被引用数 (Scopus)

抄録

Lithium disilicate (LS2) has been a crucial parent composition for glass-ceramics since the 1950s because of its excellent chemical and physical durability. In addition, a wide range of electrical properties can be obtained by changing the composition and crystallinity. Bandgap energy is one of the critical electrical properties for designing new lithium silicate-based materials. In this study, the bandgap energy of a synthesized LS2 crystal is evaluated using electron energy-loss spectroscopy and X-ray photoelectron spectroscopy. These two techniques unambiguously establish that the bandgap energy of LS2 is 7.7-7.8 eV, which is in the vacuum ultraviolet region. This confirms the insulating nature of the LS2 crystal.

本文言語英語
ページ(範囲)5139-5144
ページ数6
ジャーナルJournal of the American Ceramic Society
103
9
DOI
出版ステータス出版済み - 2020 9月 1

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