STUDY ON THE STRUCTURAL AND OPTICAL PROPERTIES NICKEL OXIDE STRUCTURAL AND OPTICAL PROPERTIES NICKEL OXIDE (NiO) NANOPARTICLES  STRUCTURAL AND OPTICAL PROPERTIES OF

WUBIE, BIMR

dc.contributor.author	WUBIE, BIMR
dc.date.accessioned	2019-10-11T04:26:45Z
dc.date.available	2019-10-11T04:26:45Z
dc.date.issued	2019-10-11
dc.identifier.uri	http://hdl.handle.net/123456789/9861
dc.description.abstract	ABSTRACT The present project work was mainly focused on reviewed structural and optical properties of Nickel oxide (NiO) nanoparticles. I calculated the band gap and particle size of NiO nano particles from UV-Vis and PL spectra using brus model of effective mass approximation for different temperatures and solvents effect. The UV-Vis spectra shown that as temperature increased from 240 to 280 ℃ the energy band gap decreased from 4.1 to 3.61 eV, however the particle size increased from 5 to 75 nm. For different solvents energy band gap increased from 3.74 to 3.99eV, when particle size decreased from 9.6 to 5.82 nm. At PL spectra of peaks wavelengths (303, 332, 364 nm) of different solution temperatures 37, 50, 70 ℃, particle size and energy band gap are determined. As temperature increased from 37 to 70 ℃ the particle size increased from 3.38 to 7.68 nm, but band gap energy decreased from 4.09 to 3.4 eV. And also when NiO is doped with barium the particle size decreased from 3.6 to 0.42 nm, whereas the energy band gap increased from 3.3 to 6.15eV. In my work by increasing temperature at both UV-Vis and PL spectra the calculated value of the energy band gap by brus mass approximation is increased, but the particle size of NiO nanoparticles is decreased. For increasing the solvent the energy band gap decreased, however; particle size is increased. Key words: NiO, nanoparticles, X-ray diffraction, UV-Vis spectroscopy, PL spectroscopy, Brus mass approximation, Energy band gap, particle size.	en_US
dc.language.iso	en	en_US
dc.subject	Physics	en_US
dc.title	STUDY ON THE STRUCTURAL AND OPTICAL PROPERTIES NICKEL OXIDE STRUCTURAL AND OPTICAL PROPERTIES NICKEL OXIDE (NiO) NANOPARTICLES STRUCTURAL AND OPTICAL PROPERTIES OF	en_US
dc.type	Thesis	en_US