Synthesis and Morphological Control of Europium Doped Cadmium Sulphide Nanocrystals

被引：11

作者：

Saravanan, Lakshmanan ^{[1
,2
]}

Jayavel, Ramasamy ^{[1
]}

Aldeyab, Salem S. ^{[3
]}

Zaidi, Javaid S. M. ^{[4
]}

Ariga, Katsuhiko ^{[2
]}

Vinu, Ajayan ^{[2
]}

机构：

[1] Anna Univ, Ctr Nanosci & Technol, Madras 600025, Tamil Nadu, India

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, WPI Res Ctr, Tsukuba, Ibaraki 3050044, Japan

[3] King Saud Univ, Dept Chem, Petrochem Res Chair, Fac Sci, Riyadh 11451, Saudi Arabia

[4] King Fahd Univ Petr & Minerals, Dept Chem Engn, Dhahran 31261, Saudi Arabia

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 09期

关键词：

Eu Doped CdS; Nanostructures; ICP; HRTEM; Photoluminescence; PHOTOLUMINESCENCE PROPERTIES; QUANTUM DOTS; PHOTOCATALYTIC ACTIVITY; LUMINESCENT PROPERTIES; CDS NANOPARTICLES; ENERGY-TRANSFER; FABRICATION; ENHANCEMENT; SILICA; FILMS;

D O I：

10.1166/jnn.2011.4728

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Europium doped cadmium sulphide (Cd0.98Eu0.2S) nanostructures were synthesised by chemical co-precipitation method using ethylene glycol (EG) and deionized water (Eu:CdS-1), and isopropyl alcohol (IPA) and deionized water (Eu:CdS-2) as mixed solvents. It has been found that the nanostructure of the europium doped CdS can be controlled by simply varying the mixed solvent system. Powder XRD pattern reveals the formation of hexagonal (wurtzite) and cubic (zinc blende) structure for Eu:CdS-1, and Eu:CdS-2, respectively. The crystallite size of the sample prepared using IPA and deionized water was measured to be 2.64 nm which is much smaller than that of the sample prepared using EG and deionized water as mixed solvent (3.65 nm). Morphology of the materials can also be changed from flower shaped crystals to paddy like structures by varying the mixed solvents. Band gap values of Eu3+ doped CdS nanocrystals synthesized from two different solvents were estimated using UV-reflectance spectra. The size and crystallinity of the samples were confirmed by HRTEM and SAED analysis. A significant change in the PL emission of the CdS nanocrystals was observed for the europium doped CdS which is mainly due to the presence of Eu3+ ions which also play a significant role in the energy transfer process. It was also observed that the shift in the emission and efficiency depends on size and shape of the synthesised nanoparticles.

引用

页码：7783 / 7788

页数：6

共 45 条

[1] Energy-transfer pumping of semiconductor nanocrystals using an epitaxial quantum well [J].

Achermann, M ;

Petruska, MA ;

Kos, S ;

Smith, DL ;

Koleske, DD ;

Klimov, VI .

NATURE, 2004, 429 (6992) :642-646

[2] Challenges and breakthroughs in recent research on self-assembly [J].

Ariga, Katsuhiko ;

Hill, Jonathan P. ;

Lee, Michael V. ;

Vinu, Ajayan ;

Charvet, Richard ;

Acharya, Somobrata .

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2008, 9 (01)

[3] Nanoarchitectonics: A Conceptual Paradigm for Design and Synthesis of Dimension-Controlled Functional Nanomaterials [J].

Ariga, Katsuhiko ;

Li, Mao ;

Richards, Gary J. ;

Hill, Jonathan P. .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2011, 11 (01) :1-13

[4] Supramolecular Materials from Inorganic Building Blocks [J].

Ariga, Katsuhiko ;

Ji, Qingmin ;

Hill, Jonathan P. ;

Vinu, Ajayan .

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, 2010, 20 (01) :1-9

[5] Preparation and Characterization of Chiral Oxazaborolidine Complex Immobilized SBA-15 and Its Application in the Asymmetric Reduction of Prochiral Ketones [J].

Balakrishnan, Umesh ;

Ananthi, Nallamuthu ;

Selvan, Sakthivel Tamil ;

Pal, Ravindra ;

Ariga, Katsuhiko ;

Velmathi, Sivan ;

Vinu, Ajayan .

CHEMISTRY-AN ASIAN JOURNAL, 2010, 5 (04) :897-903

[6] Synthesis and characterization of ZnO nanowires and their integration into dye-sensitized solar cells [J].

Baxter, J. B. ;

Walker, A. M. ;

van Ommering, K. ;

Aydil, E. S. .

NANOTECHNOLOGY, 2006, 17 (11) :S304-S312

[7]

Blasse G., 1994, LUMINESCENT MAT, P1, DOI [10.1007/978-3-642-79017-1_1, DOI 10.1007/978-3-642-79017-1_1, 10.1007/978-3-642-79017-11, DOI 10.1007/978-3-642-79017-11]

[8] On the incorporation of trivalent rare earth ions in II-VI semiconductor nanocrystals [J].

Bol, AA ;

van Beek, R ;

Meijerink, A .

CHEMISTRY OF MATERIALS, 2002, 14 (03) :1121-1126

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

BRUS, L .

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

[10] Factors influencing the passivation of US quantum dots embedded in silica glass [J].

Chahboun, A ;

Rolo, AG ;

Filonovich, SA ;

Gomes, K .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2006, 90 (10) :1413-1419

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