SiO2/PbTe quantum-dot multilayer production and characterization -: art. no. 113117

被引：31

作者：

Rodríguez, E ^{[1
]}

Jimenez, E ^{[1
]}

Padilha, LA ^{[1
]}

Neves, AAR ^{[1
]}

Jacob, GJ ^{[1
]}

César, CL ^{[1
]}

Barbosa, LC ^{[1
]}

机构：

[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, Dept Elect Quant, BR-13084970 Campinas, SP, Brazil

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 11期

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1063/1.1887823

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the fabrication of multilayer structures containing layers of PbTe quantum dots (QDs) spaced by 15-20 nm thick SiO2 layers. The QDs were grown by the laser ablation of a PbTe target using the second harmonic of Nd:YAG laser in an argon atmosphere. The SiO2 layers were fabricated by plasma chemical vapor deposition using tetramethoxysilane as a precursor. The influence of the ablation time on the size and size distribution of the QDs is studied by high-resolution transmission electron microscopy. Optical absorption measurements show clearly the QDs confinement effects. (C) 2005 American Institute of Physics.

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页码：1 / 3

页数：3

相关论文

共 19 条

[1] Pulsed laser deposition of nanocomposite thin films for photonic applications [J].

Afonso, CN ;

Solis, J ;

Serna, R ;

Gonzalo, J ;

Ballesteros, JM ;

de Sande, JCG .

LASER APPLICATIONS IN MICROELECTRONIC AND OPTOELECTRONIC MANUFACTURING IV, 1999, 3618 :453-464

[2] Vacuum versus gas environment felt the synthesis of nanocomposite films by pulsed-laser deposition [J].

Afonso, CN ;

Gonzalo, J ;

Serna, R ;

de Sande, JCG ;

Ricolleau, C ;

Grigis, C ;

Gandais, M ;

Hole, DE ;

Townsend, PD .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1999, 69 (Suppl 1) :S201-S207

[3] Nanocrystal size dependence of the third-order nonlinear optical response of Cu:Al2O3 thin films [J].

Ballesteros, JM ;

Solis, J ;

Serna, R ;

Afonso, CN .

APPLIED PHYSICS LETTERS, 1999, 74 (19) :2791-2793

[4] Structural studies of Ag nanocrystals embedded in amorphous Al2O3 grown by pulsed laser deposition [J].

Barnes, JP ;

Petford-Long, AK ;

Doole, RC ;

Serna, R ;

Gonzalo, J ;

Suarez-García, A ;

Afonso, CN ;

Hole, D .

NANOTECHNOLOGY, 2002, 13 (04) :465-470

[5]

Cesar C. L., 2004, Atti della Fondazione Giorgio Ronchi, V59, P519

[6]

CHEUNG JT, 1994, PULSED LASER DEPOSIT, pCH1

[7] Formation and growth of semiconductor PbTe nanocrystals in a borosilicate glass matrix [J].

Craievich, AF ;

Alves, OL ;

Barbosa, LC .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1997, 30 (02) :623-627

[8] Structure characterization and mechanism of growth of PbTe nanocrystals embedded in a silicate glass [J].

Craievich, AF ;

Kellermann, G ;

Barbosa, LC ;

Alves, OL .

PHYSICAL REVIEW LETTERS, 2002, 89 (23)

[9] Formation of copper and silver nanometer dimension clusters in silica by the sol-gel process [J].

De, G ;

Tapfer, L ;

Catalano, M ;

Battaglin, G ;

Caccavale, F ;

Gonella, F ;

Mazzoldi, P ;

Haglund, RF .

APPLIED PHYSICS LETTERS, 1996, 68 (26) :3820-3822

[10] NONLINEAR OPTICS IN COMPOSITE-MATERIALS .1. SEMICONDUCTOR AND METAL CRYSTALLITES IN DIELECTRICS [J].

FLYTZANIS, C ;

HACHE, F ;

KLEIN, MC ;

RICARD, D ;

ROUSSIGNOL, P .

PROGRESS IN OPTICS, 1991, 29 :321-411