Solvothermal Synthesis and Characterization of Chalcopyrite CuInSe<sub>2</sub> Nanoparticles

<p>Abstract</p> <p>The ternary I-III-VI<sub>2</sub> semiconductor of CuInSe<sub>2</sub> nanoparticles with controllable size was synthesized via a simple solvothermal method by the reaction of elemental selenium powder and CuCl as well as InCl<sub>3<...

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Bibliographic Details
Main Authors: Yu Seong-Man, Shin Dong-Wook, Chen Huiyu, Yoo Ji-Beom
Format: Article
Language:English
Published: SpringerOpen 2009-01-01
Series:Nanoscale Research Letters
Subjects:
Online Access:http://dx.doi.org/10.1007/s11671-009-9468-6
Description
Summary:<p>Abstract</p> <p>The ternary I-III-VI<sub>2</sub> semiconductor of CuInSe<sub>2</sub> nanoparticles with controllable size was synthesized via a simple solvothermal method by the reaction of elemental selenium powder and CuCl as well as InCl<sub>3</sub> directly in the presence of anhydrous ethylenediamine as solvent. X-ray diffraction patterns and scanning electron microscopy characterization confirmed that CuInSe<sub>2</sub> nanoparticles with high purity were obtained at different temperatures by varying solvothermal time, and the optimal temperature for preparing CuInSe<sub>2</sub> nanoparticles was found to be between 180 and 220 &#176;C. Indium selenide was detected as the intermediate state at the initial stage during the formation of pure ternary compound, and the formation of copper-related binary phase was completely deterred in that the more stable complex [Cu(C<sub>2</sub>H<sub>8</sub>N<sub>2</sub>)<sub>2</sub>]<sup>+</sup> was produced by the strong <it>N</it>-chelation of ethylenediamine with Cu<sup>+</sup>. These CuInSe<sub>2</sub> nanoparticles possess a band gap of 1.05 eV calculated from UV&#8211;vis spectrum, and maybe can be applicable to the solar cell devices.</p>
ISSN:1931-7573
1556-276X