Photoluminescence of size-separated silicon nanocrystals: Confirmation of quantum confinement

被引：348

作者：

Ledoux, G

Gong, J

Huisken, F

Guillois, O

Reynaud, C

机构：

[1] Max Planck Inst Stromungsforsch, D-37073 Gottingen, Germany

[2] CEA Saclay, Serv Photons Atomes & Mol, F-91191 Gif Sur Yvette, France

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 25期

关键词：

D O I：

10.1063/1.1485302

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silicon nanocrystals with diameters between 2.5 and 8 nm were prepared by pulsed CO2 laser pyrolysis of silane in a gas flow reactor and expanded through a conical nozzle into a high vacuum. Using a fast-spinning molecular-beam chopper, they were size-selectively deposited on dedicated quartz substrates. Finally, the photoluminescence of the silicon nanocrystals and their yield were measured as a function of their size. It was found that the photoluminescence follows very closely the quantum-confinement model. The yield shows a pronounced maximum for sizes between 3 and 4 nm. (C) 2002 American Institute of Physics.

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页码：4834 / 4836

页数：3

相关论文

共 17 条

[1] Influence of light intensity on the photoluminescence of silicon nanostructures [J].

Amans, D ;

Guillois, O ;

Ledoux, G ;

Porterat, D ;

Reynaud, C .

JOURNAL OF APPLIED PHYSICS, 2002, 91 (08) :5334-5340

[2] ELECTRONIC SPECTROSCOPY AND PHOTOPHYSICS OF SI NANOCRYSTALS - RELATIONSHIP TO BULK C-SI AND POROUS SI [J].

BRUS, LE ;

SZAJOWSKI, PF ;

WILSON, WL ;

HARRIS, TD ;

SCHUPPLER, S ;

CITRIN, PH .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1995, 117 (10) :2915-2922

[3] SILICON QUANTUM WIRE ARRAY FABRICATION BY ELECTROCHEMICAL AND CHEMICAL DISSOLUTION OF WAFERS [J].

CANHAM, LT .

APPLIED PHYSICS LETTERS, 1990, 57 (10) :1046-1048

[4] The structural and luminescence properties of porous silicon [J].

Cullis, AG ;

Canham, LT ;

Calcott, PDJ .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (03) :909-965

[5] THEORETICAL ASPECTS OF THE LUMINESCENCE OF POROUS SILICON [J].

DELERUE, C ;

ALLAN, G ;

LANNOO, M .

PHYSICAL REVIEW B, 1993, 48 (15) :11024-11036

[6] Gas-phase characterization of silicon nanoclusters produced by laser pyrolysis of silane [J].

Ehbrecht, M ;

Huisken, F .

PHYSICAL REVIEW B, 1999, 59 (04) :2975-2985

[7] Photoluminescence and resonant Raman spectra of silicon films produced by size-selected cluster beam deposition [J].

Ehbrecht, M ;

Kohn, B ;

Huisken, F ;

Laguna, MA ;

Paillard, V .

PHYSICAL REVIEW B, 1997, 56 (11) :6958-6964

[8] Photoluminescence and electroluminescence from porous silicon [J].

Fauchet, PM .

JOURNAL OF LUMINESCENCE, 1996, 70 :294-309

[9] SIZE DEPENDENCE OF EXCITONS IN SILICON NANOCRYSTALS [J].

HILL, NA ;

WHALEY, KB .

PHYSICAL REVIEW LETTERS, 1995, 75 (06) :1130-1133

[10] Effect of passivation and aging on the photoluminescence of silicon nanocrystals [J].

Ledoux, G ;

Gong, J ;

Huisken, F .

APPLIED PHYSICS LETTERS, 2001, 79 (24) :4028-4030