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Temperature Dependence of Exciton and Trion States in CdTe Quantum Well at High Magnetic Fields

100%

Andronikov D., Platonov A., Crooker S., Barrick T., Karczewski G.

Acta Physica Polonica A

2005

vol. 108

issue 4

653-660

Temperature dependent photoluminescence and reflectivity spectra of excitons, singlet and triplet states of trions were studied in CdTe-based quantum wells at high magnetic fields. Interesting features of the exciton and trion spectral lines with altering temperatures are explained by analyzing the thermal population and the kinetics of the exciton-electron-trion energetic system.

Excitons and Trions in Modulation Doped Structures in High Magnetic Fields

86%

Kochereshko V., Andronikov D., Platonov A., Crooker S., Barrick T., Karczewski G., Tronc P.

Acta Physica Polonica A

2004

vol. 106

issue 3

319-328

Photoluminescence spectra of modulation-doped CdTe/CdMgTe quantum well structures containing two-dimensional electron gases of low, moderate and high electron concentrations were studied in high magnetic fields up to 45 T. The recombination line of triplet trion state was found in the spectra. A model calculation of photoluminescence spectra in magnetic fields, which takes into account singlet and triplet trion states, was carried out. It was shown that the dark triplet becomes observable in photoluminescence spectra because it becomes the only recombination channel when the formation of the singlet trion state is suppressed by magnetic fields.

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2 Acta Physica Polonica A

1 2005

1 2004

2 Andronikov D.

2 Barrick T.

2 Crooker S.

2 Karczewski G.

2 Platonov A.

1 Kochereshko V.

1 Tronc P.

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Temperature Dependence of Exciton and Trion States in CdTe Quantum Well at High Magnetic Fields

Excitons and Trions in Modulation Doped Structures in High Magnetic Fields