Size-dependent excited state properties of US nanocrystals

被引：41

作者：

Ma, GH

Tang, SH

Sun, WX

Shen, ZX

Huang, WM

Shi, JL

机构：

[1] Natl Univ Singapore, Dept Phys, Singapore 117542, Singapore

[2] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 200050, Peoples R China

来源：

PHYSICS LETTERS A | 2002年 / 299卷 / 5-6期

关键词：

D O I：

10.1016/S0375-9601(02)00680-1

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

US nanocrystals of different particle sizes dispersed in ZrO2 films were fabricated by sol-gel and dipping method. The size dependent excited state optical properties were systematically investigated by photoluminescence, time-resolved photoluminescence and Raman spectroscopy. The experimental results show that the relaxation of the excited state is composed of two processes. The fast component that arises from band edge emission shows a weak dependence on particle size, while the slow component, which is attributed to the shallow defect level emission, exhibits strong dependence on particle sizes. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：581 / 585

页数：5

相关论文

共 23 条

[1] A hybrid electrochemical/chemical synthesis of supported, luminescent cadmium sulfide nanocrystals [J].

Anderson, MA ;

Gorer, S ;

Penner, RM .

JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (31) :5895-5899

[2] LUMINESCENCE PROPERTIES OF CDSE QUANTUM CRYSTALLITES - RESONANCE BETWEEN INTERIOR AND SURFACE LOCALIZED STATES [J].

BAWENDI, MG ;

CARROLL, PJ ;

WILSON, WL ;

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (02) :946-954

[3] ELECTRONIC WAVE-FUNCTIONS IN SEMICONDUCTOR CLUSTERS - EXPERIMENT AND THEORY [J].

BRUS, L .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (12) :2555-2560

[4] ELECTRON ELECTRON AND ELECTRON-HOLE INTERACTIONS IN SMALL SEMICONDUCTOR CRYSTALLITES - THE SIZE DEPENDENCE OF THE LOWEST EXCITED ELECTRONIC STATE [J].

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (09) :4403-4409

[5] Nonlinear optical spectroscopy of embedded semiconductor clusters [J].

Brysch, A ;

Bour, G ;

Neuendorf, R ;

Kreibig, U .

APPLIED PHYSICS B-LASERS AND OPTICS, 1999, 68 (03) :447-451

[6] THEORY OF ONE-PHONON RAMAN-SCATTERING IN SEMICONDUCTOR MICROCRYSTALLITES [J].

CHAMBERLAIN, MP ;

TRALLEROGINER, C ;

CARDONA, M .

PHYSICAL REVIEW B, 1995, 51 (03) :1680-1693

[7]

CHEN W, 2000, HDB NANOSTRUCTURED M, V4

[8] Fine structure splitting in the optical spectra of single GaAs quantum dots [J].

Gammon, D ;

Snow, ES ;

Shanabrook, BV ;

Katzer, DS ;

Park, D .

PHYSICAL REVIEW LETTERS, 1996, 76 (16) :3005-3008

[9] Properties of CdS nanoparticles dispersed zirconia films [J].

Huang, WM ;

Shi, JL .

SCRIPTA MATERIALIA, 2001, 44 (01) :117-123

[10] Structural and optical characterization of CdS films grown by photochemical deposition [J].

Ichimura, M ;

Goto, F ;

Arai, E .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (10) :7411-7417