抄録
Free-exciton emissions increase non-linearly by cathodoluminescence (CL) above the threshold probe current of 30 μA in high-pressure high-temperature synthetic type-IIa diamond. A droplet of electron-hole liquid (EHL) is also observed by CL for the first time. Furthermore, boron acceptor bound-exciton emission as well as free-exciton emission also increases super-linearly in an unintentionally boron-contaminated area. The threshold probe current of non-linear increase of excitonic emission is in accordance with the emergence of the EHL peak. It is considered that the non-linear increase of excitonic emissions is due to the increase in the radiative recombination rate of free excitons under high exciton density.
本文言語 | English |
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ページ(範囲) | 1995-1998 |
ページ数 | 4 |
ジャーナル | Diamond and Related Materials |
巻 | 12 |
号 | 10-11 |
DOI | |
出版ステータス | Published - 2003 |
ASJC Scopus subject areas
- 電子材料、光学材料、および磁性材料
- 化学 (全般)
- 機械工学
- 材料化学
- 電子工学および電気工学