Design of semiconductor CdSe core ZnS/CdS multishell quantum dots for multiphoton applications

被引：15

作者：

Fu, Y. ^{[1
]}

Han, T.-T.

Agren, H.

Lin, L.

Chen, P.

Liu, Y.

Tang, G.-Q.

Wu, J.

Yue, Y.

Dai, N.

机构：

[1] Royal Inst Technol, Sch Biotechnol, Dept Theoret Chem, AlbaNova, S-10691 Stockholm, Sweden

[2] Nankai Univ, Inst Modern Opt, Tianjin 300071, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 17期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2731525

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Optical properties of colloidal II-VI semiconductor CdSe cores with ZnS and CdS multishell quantum dots (QDs) have been studied by experimental characterization and theoretical analysis. Due to the large number of energy states densely compacted in both conduction and valence bands of the quantum dots, strong interband and intraband optical couplings are induced by the multiphoton excitation, implicating an efficient fluorescence of such II-VI-based core-multishell CdSe QDs. This fact in combination with the advantage of the size tolerance of II-VI QDs with respect to the narrow fluorescence bandwidth make these systems excellent candidates for applications using fluorescence induced by multiphoton excitation. (c) 2007 American Institute of Physics.

引用

页数：3

共 13 条

[1]

[Anonymous], 1992, DATA SCI TECHNOLOGY

[2]

EFROS AL, 1982, SOV PHYS SEMICOND+, V16, P772

[3] Multiphoton excitation of quantum dots by ultrashort and ultraintense laser pulses [J].

Fu, Y. ;

Han, T. -T. ;

Luo, Y. ;

Agren, H. .

APPLIED PHYSICS LETTERS, 2006, 88 (22)

[4] Radiative emission from multiphoton-excited semiconductor quantum dots [J].

Han, T. -T. ;

Fu, Y. ;

Agren, H. .

JOURNAL OF APPLIED PHYSICS, 2007, 101 (06)

[5] INCOMPLETE CONFINEMENT OF ELECTRONS AND HOLES IN MICROCRYSTALS [J].

KAYANUMA, Y ;

MOMIJI, H .

PHYSICAL REVIEW B, 1990, 41 (14) :10261-10263

[6] Large-scale synthesis of nearly monodisperse CdSe/CdS core/shell nanocrystals using air-stable reagents via successive ion layer adsorption and reaction [J].

Li, JJ ;

Wang, YA ;

Guo, WZ ;

Keay, JC ;

Mishima, TD ;

Johnson, MB ;

Peng, XG .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (41) :12567-12575

[7] Quantum dots for live cells, in vivo imaging, and diagnostics [J].

Michalet, X ;

Pinaud, FF ;

Bentolila, LA ;

Tsay, JM ;

Doose, S ;

Li, JJ ;

Sundaresan, G ;

Wu, AM ;

Gambhir, SS ;

Weiss, S .

SCIENCE, 2005, 307 (5709) :538-544

[8]

Pang T., 2006, INTRO COMPUTATIONAL, P285

[9] PHOTOCHEMISTRY OF COLLOIDAL SEMICONDUCTORS .15. QUANTUM SIZE EFFECTS IN SEMICONDUCTOR CRYSTALLITES - CALCULATION OF THE ENERGY-SPECTRUM FOR THE CONFINED EXCITON [J].

SCHMIDT, HM ;

WELLER, H .

CHEMICAL PHYSICS LETTERS, 1986, 129 (06) :615-618

[10] Quantum dots spectrally distinguish multiple species within the tumor milieu in vivo [J].

Stroh, M ;

Zimmer, JP ;

Duda, DG ;

Levchenko, TS ;

Cohen, KS ;

Brown, EB ;

Scadden, DT ;

Torchilin, VP ;

Bawendi, MG ;

Fukumura, D ;

Jain, RK .

NATURE MEDICINE, 2005, 11 (06) :678-682

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