Effect of Temperature in ZnO and Related Computational Studies

Arnab Bhattacharyya; Ritambhara Dash

doi:10.20944/preprints202209.0382.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

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

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.

ZnO; sol gel; temperature; band gap; simulation

Chemistry and Materials Science, Materials Science and Technology

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Effect of Temperature in ZnO and Related Computational Studies

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