Chemical synthesis of CdS nanoparticles and their optical and dielectric studies

被引：86

作者：

Khan, Ziaul Raza ^{[1
]}

Zulfequar, M. ^{[1
]}

Khan, Mohd. Shahid ^{[1
]}

机构：

[1] Jamia Millia Islamia, Dept Phys, Laser Spect Lab, New Delhi 110025, India

来源：

JOURNAL OF MATERIALS SCIENCE | 2011年 / 46卷 / 16期

关键词：

CADMIUM-SULFIDE NANOPARTICLES; SURFACE;

D O I：

10.1007/s10853-011-5481-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cadmium sulphide nanoparticles were synthesized by chemical displacement reaction method using cadmium nitrate as cadmium source and ammonium sulphide as sulphur source. The CdS samples are characterized using X-ray diffraction, UV-Vis spectroscopy, FTIR spectroscopy, scanning electron microscopy and impedance spectroscopy. CdS nanoparticles are found to possess cubic structure with the crystallite size similar to 10 nm. The absorption spectra of synthesized CdS nanoparticles revealed the blue shift in excitonic transitions with respect to CdS bulk material, clearly confirming the formation of nanoparticles. The dielectric properties of CdS nanoparticles are studied in the frequency range 10(3)-10(7) Hz at room temperature. The dielectric properties of CdS nanoparticles are found to be significantly enhanced specially in the low frequency range due to confinement.

引用

页码：5412 / 5416

页数：5

共 18 条

[1] STUDY OF DIELECTRIC-PROPERTIES OF NANO-PARTICLES OF CADMIUM-SULFIDE [J].

ABDULKHADAR, M ;

THOMAS, B .

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1995, 150 (02) :755-762

[2] ANOMALOUS CONDUCTIVITY PREFACTORS IN FAST ION CONDUCTORS [J].

ALMOND, DP ;

WEST, AR .

NATURE, 1983, 306 (5942) :456-457

[3] Quantum dot bioconjugates for ultrasensitive nonisotopic detection [J].

Chan, WCW ;

Nie, SM .

SCIENCE, 1998, 281 (5385) :2016-2018

[4]

Chatterjee M, 2001, J AM CERAM SOC, V84, P1439, DOI 10.1111/j.1151-2916.2001.tb00857.x

[5] An effective method of Cu incorporation in CdTe solar cells for improved stability [J].

Erra, S. ;

Shivakumar, C. ;

Zhao, H. ;

Barri, K. ;

Morel, D. L. ;

Ferekides, C. S. .

THIN SOLID FILMS, 2007, 515 (15) :5833-5836

[6]

Ghasemi Younes, 2009, Acta Biomed, V80, P156

[7] A novel method for the synthesis of CdS nanoparticles without surfactant [J].

Ghows, N. ;

Entezari, M. H. .

ULTRASONICS SONOCHEMISTRY, 2011, 18 (01) :269-275

[8] Characterization and surface charge measurement of self-assembled CdS nanoparticle films [J].

Hu, K ;

Brust, M ;

Bard, AJ .

CHEMISTRY OF MATERIALS, 1998, 10 (04) :1160-1165

[9] Temporal evolution of capped cadmium sulfide nanoparticles [J].

Kalasad, M. N. ;

Rabinal, M. K. ;

Mulimani, B. G. ;

Avadhani, G. S. .

SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 2008, 23 (04)

[10] Optical and structural properties of thermally evaporated cadmium sulphide thin films on silicon (100) wafers [J].

Khan, Ziaul Raza ;

Zulfequar, M. ;

Khan, Mohd Shahid .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2010, 174 (1-3) :145-149

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