Experimental observation of quantum confinement in the conduction band of PbS quantum dots

被引：1

作者：

Demchenko, I. N. ^{[1
]}

Chernyshova, M. ^{[2
]}

He, X. ^{[3
]}

Minikayev, R. ^{[1
]}

Syryanyy, Y. ^{[1
]}

Derkachova, A. ^{[1
]}

Derkachov, G. ^{[1
]}

Stolte, W. C. ^{[4
,5
]}

Liang, H. ^{[3
]}

机构：

[1] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[2] Inst Plasma Phys & Laser Microfus, PL-01497 Warsaw, Poland

[3] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA

[4] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

X-RAY SPECTROMETRY | 2013年 / 42卷 / 04期

关键词：

X-RAY-ABSORPTION; SELF-ABSORPTION;

D O I：

10.1002/xrs.2472

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

The presented investigations aimed at the development of inexpensive method for synthesized materials suitable for utilization of solar energy. This important issue was addressed by focusing, mainly, on electronic local structure studies with supporting X-ray diffraction and transmission electron microscopy analysis of colloidal galena nanoparticles and quantum dots synthesized using wet chemistry under microwave irradiation. The performed X-ray absorption near edge structure analysis revealed an evidence of quantum confinement for the sample with quantum dots, where the bottom of the conduction band was shifted to higher energy. Existence of sulfate/sulfite and thiosulfate species in pure lead sulfide and quantum dots, respectively, was identified. Copyright (c) 2013 John Wiley & Sons, Ltd.

引用

页码：197 / 200

页数：4

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