Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effect of Temperature in ZnO and Related Computational Studies

Version 1 : Received: 25 September 2022 / Approved: 26 September 2022 / Online: 26 September 2022 (07:42:25 CEST)

How to cite: Bhattacharyya, A.; Dash, R. Effect of Temperature in ZnO and Related Computational Studies. Preprints 2022, 2022090382. https://doi.org/10.20944/preprints202209.0382.v1 Bhattacharyya, A.; Dash, R. Effect of Temperature in ZnO and Related Computational Studies. Preprints 2022, 2022090382. https://doi.org/10.20944/preprints202209.0382.v1

Abstract

ZnO was synthesized by Sol gel method using zinc nitrate as precursor at different calcination temperatures. Nucleation of ZnO crystallites and their growth with rise in temperature was observed. Exciton bands and lattice imperfections affected the absorption spectra. The decrease in band gap with temperature was due to the formation of defect energy levels. Phonon assisted non-radiative transitions caused broadening of the peaks. The possibility of tuning the band gap of ZnO by changing the temperature was explored. Simulation studies showed transition to single phase with rise in temperature.

Keywords

ZnO; sol gel; temperature; band gap; simulation

Subject

Chemistry and Materials Science, Materials Science and Technology

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