Structural, morphological, gas sensing and photocatalytic characterization of MoO3 and WO3 thin films prepared by the thermal vacuum evaporation technique

2015 ◽  
Vol 357 ◽  
pp. 1089-1096 ◽  
Author(s):  
A. Arfaoui ◽  
S. Touihri ◽  
A. Mhamdi ◽  
A. Labidi ◽  
T. Manoubi
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Vacuum Evaporation ◽  
Thermal Vacuum ◽  
Evaporation Technique ◽  
Wo3 Thin Films ◽  
Vacuum Evaporation Technique

Synthesis And Structural Studies Of CdTe Thin Films Formed By Vacuum Evaporation Technique

2008 ◽  
Author(s):  
Ajit Mahadkar ◽  
Alka Chauhan ◽  
Madhavi Thakurdesai ◽  
Deepak Gaikwad ◽  
P. Predeep ◽  
...  
Keyword(s):  
Thin Films ◽  
Vacuum Evaporation ◽  
Structural Studies ◽  
Evaporation Technique ◽  
Cdte Thin Films ◽  
Vacuum Evaporation Technique

Characterization of WO3 thin films prepared by picosecond laser deposition for gas sensing

2017 ◽  
Vol 248 ◽  
pp. 153-159 ◽  
Author(s):  
Elisabeth M. Preiß ◽  
Andreas Krauß ◽  
Ville Kekkonen ◽  
Nicolae Barsan ◽  
Helmut Seidel
Keyword(s):  
Thin Films ◽  
Gas Sensing ◽  
Picosecond Laser ◽  
Laser Deposition ◽  
Wo3 Thin Films

Synthesis and Characterization of the Thin Films NiSe2/Si Heterojunction for Solar Cells

2021 ◽  
Vol 886 ◽  
pp. 57-65
Author(s):  
Shaymaa Qasim Abdul Hasan ◽  
Ahmed Z. Obaid ◽  
Hanan K. Hassun ◽  
Auday H. Shaban
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Thin Film Solar Cells ◽  
Annealing Temperatures ◽  
Material Usage ◽  
Evaporation Technique ◽  
Chalcogenide Materials ◽  
Vacuum Evaporation Technique

Thin film solar cells are preferable to the researchers and in applications due to the minimum material usage and to the rising of their efficiencies. In particular, thin film solar cells, which are designed based one transition metal chalcogenide materials, paly an essential role in solar energy conversion market. In this paper, transition metals with chalcogenide Nickel selenide termed as (NiSe2/Si) are synthesized. To this end, polycrystalline NiSe2 thin films are deposited through the use of vacuum evaporation technique under vacuum of 2.1x10-5 mbar, which are supplied to different annealing temperatures. The results show that under an annealed temperature of 525 K, the nickel sulfoselenide thin films are polycrystalline with an efficient regularity and best crystalline quality. In addition, the results demonstrate that the intersection argument for the optical properties under investigation provid the direct bandgap, over which the films have inferred on variety (1.55 and 1.75 eV). Overall, the results illustrate that an efficiency of 2.89% can be achieved with 525 K temperature.

scholarly journals Characterization of nanostructured ZnO thin films deposited through vacuum evaporation

2015 ◽  
Vol 6 ◽  
pp. 971-975 ◽  
Author(s):  
Jose Alberto Alvarado ◽  
Arturo Maldonado ◽  
Héctor Juarez ◽  
Mauricio Pacio ◽  
Rene Perez
Keyword(s):  
Thin Films ◽  
Annealing Temperature ◽  
Gradual Increase ◽  
Vacuum Evaporation ◽  
Zno Thin Films ◽  
Optical Band Gaps ◽  
Evaporation Technique ◽  
Xrd Patterns ◽  
Average Size

This work presents a novel technique to deposit ZnO thin films through a metal vacuum evaporation technique using colloidal nanoparticles (average size of 30 nm), which were synthesized by our research group, as source. These thin films had a thickness between 45 and 123 nm as measured by profilometry. XRD patterns of the deposited thin films were obtained. According to the HRSEM micrographs worm-shaped nanostructures are observed in samples annealed at 600 °C and this characteristic disappears as the annealing temperature increases. The films obtained were annealed from 25 to 1000 °C, showing a gradual increase in transmittance spectra up to 85%. The optical band gaps obtained for these films are about 3.22 eV. The PL measurement shows an emission in the red and in the violet region and there is a correlation with the annealing process.

Preparation and Characterization of Tungsten Trioxide (WO3) Thin Films

2013 ◽  
Vol 678 ◽  
pp. 32-36 ◽  
Author(s):  
Raveendran Lavanya ◽  
Gandhimathinathan Saroja ◽  
Veerapandy Vasu
Keyword(s):  
Thin Films ◽  
Electron Beam Evaporation ◽  
Glass Substrates ◽  
Heat Treated ◽  
Electron Beam Evaporation Technique ◽  
Different Temperatures ◽  
Evaporation Technique ◽  
Crystalline Nature ◽  
Wo3 Thin Films

The thin films of WO3were prepared on cleaned microscopic glass substrates by the electron beam evaporation technique. The films were coated at room temperature using pure WO3pellets as source. The prepared films were further post heat treated at different temperatures (100°C to 350°C) for about 1hr in air. The optical properties of WO3 thin films were studied in detail. The increase in the density of the film as the annealing temperature increases have been confirmed by the transmittance spectra. The film annealed at 250°C shows a strong photoluminescence peak. The peak intensity is found to be less for all other temperature. The observed results were discussed in terms of crystalline nature of WO3.

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