Core-Shell Structure and Photoluminescence of CdS Quantum Dots

Chin. Phys. Lett.

2001, Vol. 18

Issue (9): 1275-1277 DOI:

Original Articles

Core-Shell Structure and Photoluminescence of CdS Quantum Dots

ZOU Bing-Suo;WU Zhen-Yu;CAO Li;DAI Jian-Hua;ZHANG Ze-Bo;NIE Yu-Xin;XIE Si-Shen

Optical Physics Laboratory Institute of Physics and Center of Condensed Matter, Chinese Academy of Sciences, Beijing 100080

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ZOU Bing-Suo, WU Zhen-Yu, CAO Li et al 2001 Chin. Phys. Lett. 18 1275-1277

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Abstract A double-potential-well model is proposed to describe the core-shell thickness-dependent photoluminescence peaks and energy relaxations in semiconductor quantum dots(QDs). The surface effect plays an important role in the formation of new states-polaronic states around the surface of QDs. The polaronic states formed emit light due to the strong interaction between the core state (confined state) and the surface state with an enhanced participation of the size effect.

Keywords: 78.66.Jg 73.20.-r 71.35.Gg 71.24.+q

Published: 01 September 2001

PACS:	78.66.Jg	(Amorphous semiconductors; glasses)
	73.20.-r	(Electron states at surfaces and interfaces)
	71.35.Gg	(Exciton-mediated interactions)
	71.24.+q

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I9/01275

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	ZOU Bing-Suo
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