Thermal, structural and optical investigation of Cu-doped ZnO nanoparticles

作者: Maruthanayagam Jay Chithra , Kuppusamy Pushpanathan

DOI: 10.1142/S0217984916504066

关键词: Analytical chemistryDopingWurtzite crystal structureCrystalliteDopantMaterials scienceBand gapScanning electron microscopeMagnetic semiconductorTransmission electron microscopy

摘要: Well-dispersed undoped and copper-doped zinc oxide nanoparticles (Zn1−xCuxO, x = 0, 1, 5 10 wt.%) have been synthesized by precipitation method at room temperature. X-ray diffraction data revealed that the are in phase pure wurtzite structure crystallite size increases from 24 nm to 36 with increase dopant concentration. The optical band gap was found decrease increasing concentration, which clearly indicates blue shift. High-resolution scanning electron microscope image shows samples consist of an assembly nanopetals. Transmission also confirmed average particle 20–50 nm. Energy-dispersive spectrum prepared free impurities. Photoluminescence spectra exposed copper ions doped into lattice positions ZnO. A simultaneous differential calorimeter/thermogravimetric analysis combination used study variations.

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