Fundamental differences between exciton and quantum dot duo

被引：5

作者：

Combescot, Monique ^{[1
]}

Voliotis, Valia ^{[1
]}

Shiau, Shiue-Yuan ^{[2
]}

机构：

[1] Sorbonne Univ, CNRS, Inst NanoSci Paris, F-75005 Paris, France

[2] Natl Ctr Theoret Sci, Div Phys, Hsinchu 30013, Taiwan

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2020年 / 35卷 / 04期

关键词：

photon absorption; exciton; quantum confinement; low-dimensional semiconductor systems; III-V heterostructures; quantum-dot excitation; OPTICAL NONLINEARITY; ELECTRONIC-STRUCTURE; POLARITON;

D O I：

10.1088/1361-6641/ab73f2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页数：5

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