Characterization of Defects in ZnO Nanocrystals at Different Annealing Temperatures Using Positron Annihilation Lifetime Spectroscopy
Abstract:The paper presents the use of positron annihilation lifetime spectroscopy (PALS) to characterize the thermally induced evolution of defects present in chemically synthesized ZnO nanoparticles using chemical bath deposition (CBD) method followed by annealing in the temperature range of 100-800ºC. The positron annihilation lifetime data were used to trace defect structure changes in the samples after annealing. The positron lifetime spectra were deconvoluted into three components in the annealing temperatures ra… Show more
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