Excitation spectroscopy of single quantum dots at tunable positive, neutral, and negative charge states

Article

关键词: PLANAR MICROCAVITY;    INFORMATION;    GENERATION;    EXCITONS;    PHOTONS;    LIGHT;   

DOI  :  10.1103/PhysRevB.86.085306

来源: SCIE

【 摘 要 】

We present a comprehensive study of the optical transitions and selection rules of variably charged single self-assembled InAs/GaAs quantum dots. We apply high resolution polarization sensitive photoluminescence excitation spectroscopy to the same quantum dot for three different charge states: neutral and negatively or positively charged by one additional electron or hole. From the detailed analysis of the excitation spectra, a full understanding of the single-carrier energy levels and the interactions between carriers in these levels is extracted for the first time.

【 授权许可】

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