Influence of reaction time on the structural, optical and electrical performance of copper antimony sulfide nanoparticles using solvothermal method
| Autor: | G. Genifer Silvena, Bincy John, A. Leo Rajesh |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Diffuse reflectance infrared fourier transform Tetrahedrite Nanoparticle chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper 0104 chemical sciences Electronic Optical and Magnetic Materials Field emission microscopy Crystallinity symbols.namesake Chemical engineering chemistry engineering symbols Electrical and Electronic Engineering Thin film 0210 nano-technology Raman spectroscopy |
| Zdroj: | Physica B: Condensed Matter. 537:243-250 |
| ISSN: | 0921-4526 |
| Popis: | The less toxic and cost effective ternary Cu-Sb-S nanoparticles and thin films were synthesized and deposited using solvothermal and drop casting method. The reactions were carried out at different timings as 12–48 h, in steps of 12 h using ethylene glycol as solvent and polyvinylpyrrolidone (PVP) as surfactant. Systematic analysis revealed that due to the influence of different reaction time, significant and unique changes were occurring on the crystal structure, optical and electrical properties of the material. The synthesized nanopowders and deposited films were characterized by means of X-ray diffraction, Raman analysis, field emission scanning electron microscope with energy dispersive spectrometer, UV–Vis–NIR diffuse reflectance spectroscopy and hall measurement. XRD results showed that as the time increases crystallinity improves and phase transformation from chalcostibite to tetrahedrite occurs. The Optical performance revealed that the bandgap of nanoparticles were in the range of 1.21–1.49 eV. Hall measurements showed that the deposited Cu12Sb4S13 and CuSbS2 films exhibited p-type conductivity with carrier concentration ranging from 1016-1019 cm−3, indicating a promising p-type absorber material for photovoltaic applications. |
| Databáze: | OpenAIRE |
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