Inhomogeneous broadening in the photoluminescence spectrum of CdS nanoparticles

被引：88

作者：

Ravindran, TR ^{[1
]}

Arora, AK

Balamurugan, B

Mehta, BR

机构：

[1] Indira Gandhi Ctr Atom Res, Div Mat Sci, Kalpakkam 603102, Tamil Nadu, India

[2] Indian Inst Technol, Dept Phys, Thin Film Lab, New Delhi 110016, India

来源：

NANOSTRUCTURED MATERIALS | 1999年 / 11卷 / 05期

关键词：

D O I：

10.1016/S0965-9773(99)00346-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of particle size distribution of CdS nanoparticles on the band-edge photoluminescence (PL) spectrum is investigated. The resulting inhomogeneously broadened lineshape is found to be asymmetric and depend on the width of particle size distribution. The calculated lineshape is fitted to the measured PL spectrum of 3.6 nm diameter CdS nanoparticles, which showed the band-edge PL peak around 3.00 eV and that due to recombination at defects at 2.56 eV. The parameters of the PL spectrum of a bulk CdS film are used as inputs for the fitting. The average panicle size and the standard deviation of the size distribution are obtained from the analysis. The particle size estimated from the PL data is compared with that obtained from x-ray diffraction measurements. (C)1999 Acta Metallurgica Inc.

引用

页码：603 / 609

页数：7

共 20 条

[1] Semiconductor clusters, nanocrystals, and quantum dots [J].

Alivisatos, AP .

SCIENCE, 1996, 271 (5251) :933-937

[2] EFFECT OF SIZE CONFINEMENT ON THE ELECTRONIC STATES OF CDS CLUSTER IN A GERMANIUM OXIDE MATRIX [J].

ARAI, T ;

FUJIMURA, H ;

UMEZU, I ;

OGAWA, T ;

FUJII, A .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 (03) :484-489

[3]

BANYAI L, 1993, SEMICONDUCTOR QUANTU

[4] QUANTUM CONFINEMENT EFFECTS OF SEMICONDUCTING MICROCRYSTALLITES IN GLASS [J].

BORRELLI, NF ;

HALL, DW ;

HOLLAND, HJ ;

SMITH, DW .

JOURNAL OF APPLIED PHYSICS, 1987, 61 (12) :5399-5409

[5] 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

[6] SIZE OF CD(S,SE) QUANTUM DOTS IN GLASSES - CORRELATION BETWEEN MEASUREMENTS BY HIGH-RESOLUTION TRANSMISSION ELECTRON-MICROSCOPY, SMALL-ANGLE X-RAY-SCATTERING, AND LOW-FREQUENCY INELASTIC RAMAN-SCATTERING [J].

CHAMPAGNON, B ;

ANDRIANASOLO, B ;

RAMOS, A ;

GANDAIS, M ;

ALLAIS, M ;

BENOIT, JP .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (06) :2775-2780

[7] LUMINESCENCE AND PHOTOPHYSICS OF CDS SEMICONDUCTOR CLUSTERS - THE NATURE OF THE EMITTING ELECTRONIC STATE [J].

CHESTNOY, N ;

HARRIS, TD ;

HULL, R ;

BRUS, LE .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (15) :3393-3399

[8] CRYSTAL-STRUCTURE AND OPTICAL-PROPERTIES OF CD32S14(SC6H5)36.DMF4, A CLUSTER WITH A 15-ANGSTROM CDS CORE [J].

HERRON, N ;

CALABRESE, JC ;

FARNETH, WE ;

WANG, Y .

SCIENCE, 1993, 259 (5100) :1426-1428

[9] SYNTHESIS AND CHARACTERIZATION OF SURFACE-CAPPED, SIZE-QUANTIZED CDS CLUSTERS - CHEMICAL CONTROL OF CLUSTER SIZE [J].

HERRON, N ;

WANG, Y ;

ECKERT, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1990, 112 (04) :1322-1326

[10]

MAEDA Y, 1991, APPL PHYS LETT, V59, P3138

← 1 2 →