Research Papers

Experimental and theoretical study of localization of electrons by deformed potential well in quantum dots

[+] Author Affiliations
Yu-Jen Chen

National Central University, Department of Optics and Photonics, 300 Chung-Da Road, Chung-Li 32001, Taiwan

Cheng-Chung Lee

National Central University, Department of Optics and Photonics, 300 Chung-Da Road, Chung-Li 32001, Taiwan

Francois Flory

Ecole Centrale Marseille, 3 rue Jolito Curie, Marseille 13451, France

J. Nanophoton. 8(1), 083090 (Apr 23, 2014). doi:10.1117/1.JNP.8.083090
History: Received November 22, 2013; Revised February 23, 2014; Accepted February 25, 2014
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Abstract.  The deformed potential structure of CdSe/ZnS core/shell quantum dots (QDs) was analyzed by calculating precise state energies and state functions. Exactly how an external electric field affects the photoluminescence was also studied. Additionally, the tilt potential structure induced by the external electric field, commonly referred to as the quantum-confined Stark effect, was calculated to account for the observed blue and red shifts. Experimental results indicated that the deformation also includes a bend, which is attributed to the shape of a QD. Calculations of the localization of electrons of the foregoing phenomena closely correspond to the experimental data.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Yu-Jen Chen ; Cheng-Chung Lee and Francois Flory
"Experimental and theoretical study of localization of electrons by deformed potential well in quantum dots", J. Nanophoton. 8(1), 083090 (Apr 23, 2014). ; http://dx.doi.org/10.1117/1.JNP.8.083090


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