DOI

The emission spectra of Zn1-x Mnx Te/Zn 0.6Mg0.4Te and Cd1-x Mnx Te/Cd 0.5Mg0.5Te quantum-well structures with different manganese concentrations and quantum-well widths are studied at excitation power densities ranging from 105 to 107 Wcm-2. Under strong optical pumping, intracenter luminescence of Mn2+ ions degrades as a result of the interaction of excited managanese ions with high-density excitons. This process is accompanied by a strong broadening of the emission band of quantum-well excitons due to the exciton-exciton interaction and saturation of the exciton ground state. Under pumping at a power density of 105 W cm-2, stimulated emission of quantum-well excitons arises in CdTe/Cd0.5Mg0.5Te. The luminescence kinetics of the quantum-well and barrier excitons is investigated with a high temporal resolution. The effect of the quantum-well width and the managanese concentration on the kinetics and band shape of the Mn2+ intracenter luminescence characterized by the contribution of the manganese interface ions is determined.

Язык оригиналаанглийский
Страницы (с-по)1175-1183
Число страниц9
ЖурналPhysics of the Solid State
Том49
Номер выпуска6
DOI
СостояниеОпубликовано - 1 июн 2007

    Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Физика конденсатов

ID: 36145200