Non-linear increases in excitonic emission in synthetic type-IIa diamond

Kazushi Nakazawa, Hitoshi Umezawa, Minoru Tachiki, Hiroshi Kawarada*

*この研究の対応する著者

研究成果査読

3 被引用数 (Scopus)

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
ページ(範囲)1995-1998
ページ数4
ジャーナルDiamond and Related Materials
12
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

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