Structure, microstructure and determination of optical constants from transmittance data of co-doped Zn0.90Co0.05M0.05O (M@Al, Cu, Cd, Na) films
Article dans une revue avec comité de lecture
Date
2014Journal
Journal of Alloys and CompoundsAbstract
ZnO, Zn0.95Co0.05O and Zn0.90Co0.05M0.05O (M@Al, Cd, Na, Cu) single phase films have been successfully synthesized by ultrasonic spray pyrolysis technique. Structural analysis by X-ray diffraction show that all the films have hexagonal wurtzite structure with an average crystallite size in the range of 19–25 nm. SEM analysis revealed that Cd and Na preserve the shape of nanopetals observed with ZnO or CoAZnO films, while the doping with Al or Cu promote the formation of dense films constituted of nanorods. By the application of Levenberg–Marquardt least square method, the experimental transmittance data were fitted perfectly with the transmittance data calculated via a combination of Wemple– DiDomenico model, absorption coefficient of an electronic transition and Tauc–Urbach model. The concentration of absorbing centres NCo and oscillator strength f of d–d transition of Co2+ ions are calculated from Smakula’s formula.
Files in this item
Collections
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lecturePure and doped Zn1−xMgxO films were deposited onto glass substrate by ultrasonic spray pyrolysis technique. The variation of lattice constant and the blue shift of near-band-edge emission indicate that Zn2+ ions are ...
-
Article dans une revue avec comité de lectureDUPUY, Corinne; BENABOU, Abdelkader; SHIHAB, Sylvain; MESSAL, O.; PEYRE, Patrice; CLENET, Stephane (Elsevier, 2021)16MnCr5 steel parts were additively manufactured by laser powder bed fusion in order to investigate the effect of microstructure on electromagnetic properties. As process parameters have a direct impact on the obtained ...
-
Effect of substrate bias voltage on the microstructure and tribological properties of CrN coatings Article dans une revue avec comité de lectureMicrostructure, wear and friction coefficient of cr-based magnetron sputtered layers. CrN films were deposited on stainless steel and silicon substrates via magnetron reactive sputtering under a systematic variation of the ...
-
Article dans une revue avec comité de lectureSIAD, Ahcene; BESNARD, Aurélien; QUESADA, Jean; NOUVEAU, Corinne; JACQUET, Philippe (Lavoisier, 2015)The objective of this study is to determine the influence of duplex treatment (low pressure thermochemical treatment and PVD coating) on tribological properties. The carbide and carbonitride coatings are deposited by dual ...
-
Communication sans acteFELLAH, Mamoun; AISSANI, Linda; LABAIZ, Mohamed; IOST, Alain; LAKMINE, F.; ABDUL SAMAD, Mohammed; NOUVEAU, Corinne; MONTAGNE, Alex (2016)The current research was undertaken to study the improvement of the tribological behavior of nanocrystalline bioceramic, α-alumina sample, produced by the calculations of gibbsite at different temperatures (300 to 1200°C), ...