Spin-polarized localized exciton photoluminescence dynamics in GaInNAs quantum wells

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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1002061-1002063
Number of pages3
JournalJapanese journal of applied physics
Volume48
Issue number10 Part 1
DOIs
Publication statusPublished - 2009 Dec 1

ASJC Scopus subject areas

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

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