Investigation of some physical properties of pure and Co-doped MoO3 synthesized on glass substrates by the spray pyrolysis method

2019 ◽  
Vol 234 ◽  
pp. 71-79 ◽  
Author(s):  
N. Benameur ◽  
M.A. Chakhoum ◽  
A. Boukhachem ◽  
M.A. Dahamni ◽  
M. Ghamnia ◽  
...  
Keyword(s):  
Physical Properties ◽  
Spray Pyrolysis ◽  
Spray Pyrolysis Method ◽  
Glass Substrates ◽  
Pyrolysis Method ◽  
Co Doped

scholarly journals Crystalline phase evolution in nanostructured copper sulfide thin films prepared by spray pyrolysis method: the effect of annealing

2017 ◽  
Vol 35 (3) ◽  
pp. 673-680 ◽  
Author(s):  
Roshanak Rafiei Nazari ◽  
Hoda Enayati Taloobaghi ◽  
Hosein Eshghi
Keyword(s):  
Thin Films ◽  
Substrate Temperature ◽  
Physical Properties ◽  
Spray Pyrolysis ◽  
Copper Sulfide ◽  
Phase Evolution ◽  
Spray Pyrolysis Method ◽  
Spectra Analysis ◽  
Glass Substrates ◽  
Pyrolysis Method

AbstractIn this study, physical properties of copper sulfide thin films deposited on glass substrates by spray pyrolysis method at different temperatures (260 °C, 285 °C and 310 °C) were investigated. The influence of annealing time on the physical properties of grown layers was also studied. According to FESEM images, the sizes of the compact copper sulfide grains were varied from about 100 nm to 60 nm. Hall effect and resistivity measurements confirmed that all samples had p-type conductivity. The XRD patterns showed that, together with the dominant digenite phase (Cu1.8S) in all samples, the copper-rich phases also appeared as a result of increasing substrate temperature. The optical UV-Vis spectra analysis showed that due to increasing the substrate temperature, the band gap of the layers was reduced from about 2.4 eV to 2.0 eV. We found that as a result of annealing at 400 °C for 1.5 h in Ar atmosphere, the sample which was initially grown at 310 °C with the highest copper content, totally transformed into the polycrystalline monoclinic chalcocite phase (Cu2S) with 3D nanoporous architecture.

Optoelectronic Properties of Fluorine and Cobalt Co-Doped Tin Oxide Thin Films Deposited by Chemical Spray Pyrolysis

2019 ◽  
Vol 60 ◽  
pp. 63-75 ◽  
Author(s):  
Naoual Houaidji ◽  
Mejda Ajili ◽  
Baghdadi Chouial ◽  
Najoua Turki Kamoun ◽  
Kenza Kamli ◽  
...  
Keyword(s):  
Thin Films ◽  
Spray Pyrolysis ◽  
Carrier Concentration ◽  
Tin Oxide ◽  
Hall Mobility ◽  
Spray Pyrolysis Method ◽  
Chemical Spray Pyrolysis ◽  
Glass Substrates ◽  
Chemical Spray ◽  
Co Doped

Transparent conducting Cobalt-fluorine co-doped tin oxide (SnO2: (Co, F)) thin filmswere deposited onto preheated glass substrates using the chemical spray pyrolysis method. The ([Co2+]/[Sn4+]) atomic concentration ratio (y)in the spray solution was varied between 0 and 5 at. %. The structural, electrical, optical and photoluminescence properties of these films were studied. It is found that the thin films are polycrystalline with a tetragonal crystal structure corresponding to SnO2 phase having a preferred orientation along the (200) plane. Transmission and reflection spectra reveal the presence of interference fringes indicating thickness uniformity and surface homogeneity of the deposited thin films. The electrical resistivity (ρ), volume carrier concentration density (Nv), surface carrier concentration density (Ns) and Hall mobility (μ) of the synthesized thin films were determined from the Hall Effect measurements in the Van der Paw-configuration and the following results were obtained: n-type conductivity in all deposited films, a low resistivity of 1.16×10-2 Ω.cm, and a high Hall mobility of 15.13×102 cm2.V-1.s-1with Co concentration equals to 3 at. %. These results show that the electrical properties of these thin films where greatly improved making them suitable as ohmic contact in photovoltaic application devices.

Compositional analysis and optical properties of Co doped TiO2 thin films fabricated by spray pyrolysis method for dielectric and p hotocatalytic applications

Optik ◽  
2017 ◽  
Vol 128 ◽  
pp. 212-217 ◽  
Author(s):  
Henry Barasa Wafula ◽  
Robinson Juma Musembi ◽  
Albert Owino Juma ◽  
Patrick Tonui ◽  
Justus Simiyu ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spray Pyrolysis ◽  
Compositional Analysis ◽  
Spray Pyrolysis Method ◽  
Tio2 Thin Films ◽  
Doped Tio2 ◽  
Pyrolysis Method ◽  
Co Doped
Sign in / Sign up

Export Citation Format

Share Document