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- Title
Influence of Capping Ligand and Synthesis Method on Structure and Morphology of Aqueous Phase Synthesized CuInSe Nanoparticles.
- Authors
Ram Kumar, J.; Ananthakumar, S.; Moorthy Babu, S.
- Abstract
A facile route to synthesize copper indium diselenide (CuInSe) nanoparticles in aqueous medium was developed using mercaptoacetic acid (MAA) as capping agent. Two different mole ratios (5 and 10) of MAA were used to synthesize CuInSe nanoparticles at room temperature, as well as hydrothermal (high temperature) method. Powder x-ray diffraction analysis reveals that the nanoparticles exhibit chalcopyrite phase and the crystallinity increases with increasing the capping ratio. Raman analysis shows a strong band at 233 cm due to the combination of B (E) modes. Broad absorption spectra were observed for the synthesized CuInSe nanoparticles. The effective surface capping by MAA on the nanoparticles surface was confirmed through attenuated total reflection-Fourier transform infrared spectral analysis. The thermal stability of the synthesized samples was analyzed through thermogravimetric analysis-differential scanning calorimetry. The change in morphology of the synthesized samples was analyzed through scanning electron microscope and it shows that the samples prepared at room temperature are spherical in shape, whereas hydrothermally synthesized samples were found to have nanorod- and nanoflake-like structures. Transmission electron microscope analysis further indicates larger grains for the hydrothermally prepared samples with 10 mol ratio of MAA. Comparative analyses were made for synthesizing CuInSe nanoparticles by two different methods to explore the role of ligand and influence of temperature.
- Subjects
COPPER indium selenide; NANOPARTICLES; THIOGLYCOLIC acid; CRYSTALLINITY; FOURIER transform infrared spectroscopy; X-ray diffraction
- Publication
Journal of Electronic Materials, 2017, Vol 46, Issue 1, p296
- ISSN
0361-5235
- Publication type
Article
- DOI
10.1007/s11664-016-4906-6