Spin-polarized localized exciton photoluminescence dynamics in GaInNAs quantum wells

Shulong Lu, Hidetaka Nosho, Atsushi Tackeuchi, Lifeng Bian, Jianrong Dong, Zhichuan Niu

研究成果: Article

1 引用 (Scopus)


We have investigated spin polarization-related localized exciton photoluminescence (PL) dynamics in GaInNAs quantum wells by timeresolved PL spectroscopy. The emission energy dependence of PL polarization decay time as well as polarization-independent PL decay time suggests that the acoustic phonon scattering in the process of localized exciton transfer from the high-energy localized states to the low-energy ones dominates the PL polarization relaxation. By increasing the excitation power from 1 to 10mW, the PL polarization decay time is changed from 0.17 to more than 1 ns, which indicates the significant effect of the trapping of localized electrons by nonradiative recombination centers. These experimental findings indicate that the spin-related PL polarization in diluted nitride semiconductors can be manipulated through carrier scattering and recombination process.

ジャーナルJapanese journal of applied physics
発行部数10 Part 1
出版物ステータスPublished - 2009 12 1


ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)