Effect of sulfur precursor on dimension of One-dimensional CdS nanocrystals

J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (04): 462-464.

Effect of sulfur precursor on dimension of One-dimensional CdS nanocrystals

Sh.Mirdamadi¹;M.Maleki²

收稿日期:2008-04-22 修回日期:2008-12-16 出版日期:2009-07-28 发布日期:2009-10-10
通讯作者: Sh.Mirdamadi

Effect of Sulfur Precursor on Dimensions of One-dimensional CdS Nanocrystals

M. Maleki¹⁾, Sh. Mirdamadi^1)†, R. Ghasemzadeh¹⁾, M. Sasani Ghamsari²⁾

1) Department of Metallurgy and Material Engineering, Iran University of Science & Technology, Tehran, Iran
2) Solid State Lasers Research Group, Laser & Optics Research School, NSTRI, 11365-8486, Tehran, Iran

Received:2008-04-22 Revised:2008-12-16 Online:2009-07-28 Published:2009-10-10
Contact: Sh.Mirdamadi

摘要/Abstract

关键词: Nanomaterials;Semiconductors;CdS nanorods;Na2S;Solvothermal method

Abstract:

One-dimensional CdS nanocrystals have been prepared by solvothermal method using cadmium acetate as a cadmium precursor, elemental sulfur and Na₂S, as a sulfur precursor, and ethylenediamine as a solvent at 150°C for 5 h. The nanocrystals were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and UV-Vis absorption spectroscopy. XRD patterns indicate that both Na₂S and elemental sulfur as the sulfur precursor result in CdS nanorods with wurtzite phase (hexagonal structure). SEM and TEM images show that diameter of CdS nanorods can be decreased using Na₂S instead of elemental sulfur. For the growth of CdS nanorods, a mechanism has been proposed. Uv-Vis absorption of CdS nanorods (sulfur precursor: Na₂S) was shown blue shift to 485 nm due to the quantum size effect.

Key words: Nanomaterials, Semiconductors, CdS nanorods, Na₂S, Solvothermal method

Sh.Mirdamadi M.Maleki. Effect of sulfur precursor on dimension of One-dimensional CdS nanocrystals[J]. J. Mater. Sci. Technol., 2009, 25(04): 462-464.

M. Maleki,Sh. Mirdamadi,R. Ghasemzadeh,M. Sasani Ghamsari. Effect of Sulfur Precursor on Dimensions of One-dimensional CdS Nanocrystals[J]. J Mater Sci Technol, 2009, 25(04): 462-464.

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