Optical absorption in a CdS/CdSe/CdS asymmetric quantum well

被引：13

作者：

Arulmozhi, R. ^{[1
]}

Peter, A. John ^{[2
]}

Lee, Chang Woo ^{[3
]}

机构：

[1] Arulmigu Palaniandavar Arts Coll Women, Dept Phys, Palani 624615, India

[2] Govt Arts Coll, PG & Res Dept Phys, Madurai 625106, Tamil Nadu, India

[3] Kyung Hee Univ, Coll Engn, Dept Chem Engn, 1732 Deogyeong Daero, Yongin 446701, Gyeonggi, South Korea

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 742卷

关键词：

Exciton; Asymmetric quantum well; Absorption coefficients; CDS; CDTE;

D O I：

10.1016/j.cplett.2020.137129

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigate the electronic and optical properties of a confined exciton in CdS/CdSe/CdS asymmetric quantum well taking into account the geometrical confinement in which the right well size for various values of barrier sizes is varied. The variation of energy difference between the subbands with the change in well width alters the degree of quantum confinement. It behaves as single quantum well as the barrier width becomes very thin. The absorption coefficient brings out the fact that the optical susceptibilities demonstrate a stronger dependence on the spatial confinement. The narrow barrier plays a major role in determining the opto-electronic properties.

引用

页数：6

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