Article
Chemistry, Physical
Thangavel Ravikumar, Logu Thirumalaisamy, Sridharan Madanagurusamy, Kalainathan Sivaperuman
Summary: Ammonia (NH3) production, storage, and transportation are susceptible to leaks, posing risks to the environment and human life. Detecting NH3 within the exposure limit is crucial for eliminating health hazards. Thin films of zinc ferrite (ZF) were deposited using spray pyrolysis at different substrate temperatures. The film deposited at 225 degrees C showed a good sensing response to 25 ppm of NH3 and exhibited stability over 90 days. This research demonstrates that ZF thin films can effectively detect NH3 in the environment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Environmental Sciences
P. Velusamy, Xinghui Liu, R. Ramesh Babu, M. Sathiya, Norah Salem Alsaiari, Fatimah Mohammed Alzahrani, M. Tariq Nazir, Elangovan Elamurugu, Fuchun Zhang
Summary: Chromium doped CdO films were prepared by chemical spray deposition and characterized for their optical, electrical, structural, and microstructural properties. The films exhibited cubic crystal structure with growth along the (111) plane. Uniform distribution of grains and varied surface roughness were observed based on atomic force microscopy analysis. The films showed high optical transmittance (>75%) in the visible-near infrared region, with a maximum band gap of 2.35 eV for 1.0 wt% Cr-doping. Electrical measurements confirmed degeneracy nature and n-type semi-conductivity, with higher Cr-dopant percentage leading to increased carrier density, carrier mobility, and dc-conductivity. A remarkable response to formaldehyde gas (74.39%) was observed for 0.75 wt% Cr-doping.
Article
Materials Science, Multidisciplinary
B. Kamecki, J. Karczewski, G. Cempura, P. Jasinski, S. Molin
Summary: This study reported the preparation of (Mn,Co,Fe,Ni,Cr)3O4 high-entropy spinel oxide thin film with a thickness of -500 nm using a facile spray pyrolysis technique. The structural and electrical properties of the film were characterized after heat treatment at temperatures ranging from 400-900°C. The as-deposited film was amorphous and crystallized at 500°C, showing a homogeneous elemental distribution and the desired Fd-3m cubic spinel structure. The electrical conductivity of the film was found to depend on the processing temperature, with the highest conductivity obtained at 700°C.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
M. Humayan Kabir, Munjar Hafiz, Shamima Akhter Urmi, M. Jahidul Haque, M. Mintu Ali, Md. Saifur Rahman, M. K. R. Khan, M. S. Rahman
Summary: Cadmium oxide (CdO) and gallium (Ga) doped CdO thin films were successfully fabricated onto glass substrate using spray pyrolysis technique. The effect of Ga doping concentration on the microstructure, surface morphology, optical, electrical, and Hall effect properties of CdO thin films was investigated. The results showed that Ga doping significantly affected the properties of the CdO thin films. The optimum figure of merit (FOM) was achieved for CdO thin films doped with 3% Ga.
Article
Physics, Multidisciplinary
Ahmed A. Aboud, M. Al-Dossari, N. S. AbdEL-Gawaad, Ahmed Magdi
Summary: This study investigates the effect of annealing on the physical properties of Co-doped ZnO thin films. The Co doping level is fixed at 10 wt% and the films are deposited using spray pyrolysis techniques. Annealing at different temperatures is conducted and the physical properties are analyzed using various techniques. The results reveal changes in crystallite size, grain formation, band gap value, and plasma frequency, which ultimately affect the performance of the films as UV sensors.
Article
Physics, Condensed Matter
R. Sarath babu, Y. Narasimha Murthy, S. Vinoth, R. S. Rimal Isaac, P. Mohanraj, V. Ganesh, H. Algarni, S. AlFaify
Summary: This work reports on the structural, electrical, optical, and photosensing properties of La and Zn co-doped CdO thin films. The incorporation of La in CdO:Zn reduces the crystallite size and changes the surface morphology of the thin film samples. The co-doped thin film with 1.5 wt% of La shows low resistivity and a better figure of merit. It also exhibits higher photocurrent and ideality factor values, as well as improved photosensing properties.
SUPERLATTICES AND MICROSTRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Noureddine Hacini, Mostefa Ghamnia, Mohamed Amine Dahamni, Abdelwaheb Boukhachem, Jean-Jacques Pireaux, Laurent Houssiau
Summary: ZnO thin films were synthesized using PECVD on silicon and glass substrates at different temperatures. The films exhibited variations in structural and optical properties, with temperature playing a significant role in the crystallization of ZnO.
Article
Chemistry, Physical
M. C. Nagashree, S. D. Kulkarni, B. V. Rajendra, J. Seidel, M. S. Murari, P. Sharma
Summary: In this study, high-quality ferroic films of bismuth ferrite were synthesized on glass substrates using solution-based spray pyrolysis. The effects of annealing conditions on film quality and switchable polarization were investigated. The optimized films exhibited polycrystalline nanostructured grains with high X-ray diffraction intensity and a mixed valence state of Fe2+/3+. These films displayed a complex ferroelectric domain microstructure and demonstrated robust nanoscale polarization switching. The findings highlight the potential of spray pyrolysis for low-cost fabrication of high-quality ferroelectric thin films and its application in advanced electronic devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
R. Souissi, N. Bouguila, M. Bendahan, K. Aguir, T. Fiorido, M. Abderrabba, I Halidou, A. Labidi
Summary: The importance of detecting ozone and its impact on human health; Gas sensors based on In2S3 films prepared have high sensitivity and low detection limits; The gas sensor at a working temperature of 160 degrees Celsius exhibits good rapidity and selectivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Mohsin Ishtiaq, Dilawar Ali, R. Ahmad, I. Muneer, F. Bashir, M. Hanif, Taj M. Khan, Shahab Ahmad Abbasi
Summary: Thin films of Cr2O3 and Cu doped Cr2O3 were prepared using spray pyrolysis with different Cu/Cr ratios. The films exhibited polycrystalline nature with rhombo-hedral structure. The presence of Cu improved the antibacterial activity of the films, which was further enhanced by UVA light. The structural parameters showed a correlation with the zone of inhibition.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
K. Kasirajan, A. Nancy Anna Anasthasiya, Omar M. Aldossary, Mohd Ubaidullah, M. Karunakaran
Summary: The research reports on undoped and Mn-doped CdO films prepared by spray pyrolysis, with analyses showing changes in properties such as absorbance, bandgap values, and morphological characteristics with increasing doping concentration. The results suggest potential applications for the films in photodetector properties.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Engineering, Electrical & Electronic
M. Dharani Devi, A. Vimala Juliet, K. Hariprasad, V. Ganesh, H. Elhosiny Ali, H. Algarni, I. S. Yahia
Summary: The study investigated the structural, morphological, photoluminescence, and UV sensing properties of pure and Tb-doped NiO thin films coated on glass substrates using a cost-effective nebulizer spray technique. The structural studies confirmed a polycrystalline cubic structure with (111) preferred orientation. The photodetector performance of the films was improved by Tb doping, with a decrease in bandgap values and improved rise and decay times observed.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
Gh Sedaghati-Jamalabad, M. M. Bagheri-Mohagheghi
Summary: Dysprosium stannate-nanostructured thin films were deposited on fused silica substrates using spray pyrolysis method. The influence of Dy-content and annealing temperature on structural and optical properties of the films was investigated. Higher Dy-content and annealing temperature resulted in increased optical transmittance and bandgap of the films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Outman El Khouja, Ilhame Assahsahi, Khalid Nouneh, Mohamed Ebn Touhami, Mihail Secu, Abdelali Talbi, Yassine Khaaissa, Elena Matei, Viorica Stancu, Andrei Galatanu, Aurelian Catalin Galca
Summary: This study investigates the fabrication of stannite Cu2CoSnS4 (CCTS) films using the spray pyrolysis method and explores the influence of deposition and sulfurization temperatures on their structure and properties.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
M. Dharani Devi, A. Vimala Juliet, Ramesh Ade, M. Thirumoorthi, P. Diana, S. Saravanakumar, V. Ganesh, Yugandhar Bitla, H. Algarni
Summary: This study investigates the structural, optical, photoluminescence, and photoconductivity properties of Eu3+ doped ZnS thin films. The results show that the films have a single-phase structure and exhibit semiconductor behavior. The lowest optical bandgap is observed at a doping concentration of 3% Eu3+. The films show high intensity visible and UV emission in the photoluminescence spectra. Among all the films, the ZnS: Eu (3%) thin film has the highest photoconductive performance.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
