Photoluminescence signatures of negatively charged magnetoexcitons

Article

关键词: GAAS QUANTUM-WELLS;    EXCESS ELECTRONS;    MAGNETIC-FIELDS;    EXCITONS;    ENERGY;    SPECTROSCOPY;    SPECTRA;    DOTS;   

DOI  :  10.1103/PhysRevB.57.1762

来源: SCIE

【 摘 要 】

The negatively charged quasi-two-dimensional exciton (X-) is studied numerically in the presence of a uniform perpendicular B field and various in-plant confinements, The corresponding photoluminescence (PL) spectra, including shakeup processes, are calculated. These calculations provide a quantitative explanation of recent experimental PL spectra. The photoluminescence signatures of charged excitons in quantum dots are also examined. Electron-hole pair distribution functions are calculated that show the structure of the charged exciton states (both ground and excited stairs). Increasing excitation reflects a competition between two effects: partial ionization of either one or two electrons.

【 授权许可】

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