| Autor: |
Kumawat, Ashok, Chattopadhyay, Saikat, Misra, Kamakhya Prakash |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2723 Issue 1, p1-7, 7p |
| Abstrakt: |
Undoped and Eu doped (1, 2 and 3 at. %) ZnO nanoparticles (NPs) were synthesized by Sol-Gel co-precipitation method. The hexagonal wurtzite structure was obtained via XRD analysis, with particle size in between 27.83-64.15 nm. UV-Vis spectra showed the absorbance peak at 376 nm for undoped ZnO, which shifted to higher wavelength 385 nm for 1 at. % doping and then it shifted to lower wavelengths i.e., 380 and 379 nm for 2 and 3 at. % respectively. The band gap calculated from absorbance spectra lied in range of 3.29-3.22 eV. FTIR spectra showed the Zn–O stretching mode which is attributed to characteristic sharp peaks lying in the range of 528-536 cm-1 giving a confirmation of successful synthesis of undoped ZnO NPs. Another vibration peak of Eu-O band confirmed the incorporation of Eu ions in the ZnO matrix which shifted towards higher wavenumber in comparison to undoped ZnO i.e., from 882 to 886 cm−1 for all Eu doped ZnO NPs. FESEM images showed that undoped ZnO contained hexagonal shaped NPs with almost homogenous distribution. With initial level of doping, formation of chain linkage of particles took place. For higher Eu doping shape of the particles grew such as the platelets having stacked one by one. EDS analysis gave the elemental composition of all the synthesized NPs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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