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

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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.

元の言語English
ページ(範囲)1002061-1002063
ページ数3
ジャーナルJapanese journal of applied physics
48
発行部数10 Part 1
DOI
出版物ステータスPublished - 2009 12 1

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ASJC Scopus subject areas

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

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