Indian Journal of Science and Technology
Year: 2020, Volume: 13, Issue: 14, Pages: 1480-1485
Dojalisa Sahu1*, Nihar R Panda2
1School of Applied Sciences, Centurion University of Technology and Management, Odisha, India
2School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Odisha, India
School of Applied Sciences, Centurion University of Technology and Management, Odisha, India Email: [email protected]
Received Date:19 April 2020, Accepted Date:26 April 2020, Published Date:28 May 2020
Objectives: To understand the effect of impurity element doping; especially rare earth (Ce) ions on structural and optical properties of ZnO. Method: Co-precipitation method is used to prepare nanoparticles of pristine ZnO and ZnO doped with cerium. This method is found to be very useful in preparing nanoparticles of very low size. The property of the samples is studied by different characterization techniques such as Powder X-ray diffraction (PXRD), field emission scanning electron microscopy (FESEM), UV-visible (UV-Vis) spectroscopy, photoluminescence (PL) spectroscopy and Fourier transform infrared (FTIR) spectroscopy. Findings: XRD studies reveal the crystallographic data which tells that the prepared ZnO is of hexagonal wurtzite phase with size of 35 nm. Crystallite size and unit cell volume increase with cerium doping. FESEM study shows the formation of nanoparticles. FTIR study shows the position of different stretching and bending modes present in the sample. It confirms the position of metal-oxygen bond. Photoluminescence and UV-VIS spectra show the interesting optical properties of Ce-ZnO. The PL spectra show the presence of UV excitonic emission and visible defect emissions along with emissions due to dopant. Upon Ce doping, ZnO shows a new peak around 645 nm ascribed to the transition related to dopant level. Enhancement in emission in visible-red region of ZnO with Ce doping will be useful in preparation of LED.
Keywords: ZnOCe, Optical study, Photoluminescence, Co-precipitation
© 2020 Sahu, Panda. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Published By Indian Society for Education and Environment (iSee)
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