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Article Dans Une Revue Semiconductor Science and Technology Année : 2020

Fundamental differences between exciton and quantum dot duo

Résumé

We present five major reasons why semiconductor exciton, that is, a correlated electron–hole pair in a bulk, quantum well, or quantum wire, is conceptually different from a pair in a quantum dot: (1) the origin of pair binding, (2) the interaction with additional carriers, (3) the quantum nature of the pair, (4) the coupling to photon, and (5) the photon-absorption mechanism. Due to these differences, we should refrain from calling an electron–hole pair in a quantum dot an exciton, as commonly done; we propose to call it a duo. Within the same frame of chamber musics, we likewise propose to call three and four carriers in a dot, a trio and a quatuor, instead of a trion and a biexciton.
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Dates et versions

hal-02650704 , version 1 (16-06-2020)

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Monique Combescot, Valia Voliotis, Shiue-Yuan Shiau. Fundamental differences between exciton and quantum dot duo. Semiconductor Science and Technology, 2020, 35 (4), pp.045013. ⟨10.1088/1361-6641/ab73f2⟩. ⟨hal-02650704⟩
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