Phonon-assisted transitions of bound excitons in diamond: Analysis by mirror symmetry

Yoshiki Kubo*, Mitsuyoshi Takahata, Solange Temgoua, Riadh Issaoui, Julien Barjon, Nobuko Naka


研究成果: Article査読

2 被引用数 (Scopus)


This study aims at a quantitative understanding of the optical spectra taken from bound excitons weakly coupled to phonons in indirect semiconductors, which had been missing for decades. Insights on the properties of excitons bound at neutral acceptor impurities are obtained by analyzing the spectra reported for diamond with appropriate boron doping [Y. Kubo, Appl. Phys. Lett. 114, 132104 (2019)APPLAB0003-695110.1063/1.5089894]. We focus on the mirror symmetry holding between phonon-assisted absorption and luminescence simultaneously regarding energies, linewidths, and intensities. New analytic expressions are proposed to reproduce the spectra of phonon-assisted recombination lines. The detailed analysis reveals the contribution from excited bound-exciton states whose origin is discussed and modeled. Taking them into account improves simulation of the bound-exciton optical spectra in indirect band-gap semiconductors up to a quantitative level.

ジャーナルPhysical Review B
出版ステータスPublished - 2020 5月 15

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学


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