Synthesis and Characterization ofSb2S3Nanorods via Complex Decomposition Approach

Abdolali Alemi,Sang Woo Joo,Younes Hanifehpour

doi:10.1155/2011/414798

Abstract

Based on the complex decomposition approach, a simple hydrothermal method has been developed for the synthesizing of Sb2S3nanorods with high yield in 24 h at150∘C. The powder X-ray diffraction pattern shows the Sb2S3crystals belong to the orthorhombic phase with calculated lattice parametersa=1.120 nm,b=1.128 nm, andc=0.383 nm. The quantification of energy dispersive X-ray spectrometric analysis peaks give an atomic ratio of 2 : 3 for Sb : S. TEM and SEM studies reveal that the appearance of the as-prepared Sb2S3is rod-like which is composed of nanorods with the typical width of 30–160 nm and length of up to 6 μm. High-resolution transmission electron microscopic (HRTEM) studies reveal that the Sb2S3is oriented in the [10-1] growth direction. The band gap calculated from the absorption spectra is found to be 3.29 ev, indicating a considerable blue shift relative to the bulk. The formation mechanism of Sb2S3nanostructures is proposed.

Highlights

Metal chalcogenides have attracted considerable attention due to their proven and potential applications in electronic, optical, and superconductor devices
Sb2S3 nanorods were prepared by complex decomposition approach via hydrothermal method
The length of the nanorods is up to 6 μm and their diameter is around 30–160 nm

Summary

Introduction

Metal chalcogenides have attracted considerable attention due to their proven and potential applications in electronic, optical, and superconductor devices Among these materials, antimony sulfide (Sb2S3) is a kind of semiconductor with its interesting high photosensitivity and high thermoelectric power. Over the past two decades, many methods have been employed to prepare Sb2S3 including thermal decomposition [7], solvothermal reaction [8,9,10,11], microwave irritation [12], hydrothermal reaction [13, 14], and vacuum evaporation [15]. For the vacuum evaporation and direct elemental reaction methods, it is difficult to obtain exact stoichiometric compositions because of the differences in the vapor pressures of the reaction species.

Experimental

Results and Discussion

Conclusion