Article
Materials Science, Multidisciplinary
Abderrahmane Naas, Abdelmounaim Chetoui, Lahouari Ghalouci, Mohamed Redha Khelladi
Summary: This paper investigates the physicochemical properties of pure Cd(OH)(2) and Cd(OH)(2)-CdO composite materials in depth. The cadmium sulfate octahydrate (3CdSO(4).8H(2)O) is used as a precursor for the first time in this work and never been used in previous works involving cadmium-based materials. Additionally, we present the first synthesis of Cd(OH)(2)-CdO by pneumatic spray pyrolysis deposition technique. The molarity has a clear impact on the formation of pure Cd(OH)(2) or Cd(OH)(2)-CdO phase mixture, and the films show high transparency and low resistivity.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Physics, Multidisciplinary
P. Sasikumar, M. S. Revathy, S. Nithiyanantham
Summary: The systematic study conducted in this work on Cd(OH)(2) and CdO nanoparticles synthesized through a hydrothermal route explores their structural properties, morphology, optical characteristics, and antibacterial effects. Results indicate that the transformation from Cd(OH)(2) to CdO is characterized by a change in crystal structure from hexagonal to face-centered cubic, with CdO exhibiting a smaller particle size after calcination at 400 degrees C. Additionally, CdO demonstrates a lower optical bandgap and greater antibacterial activity compared to Cd(OH)(2), making it a more effective material for potential applications. The preparation of CdO nanoparticles was found to be cost-effective and straightforward.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Materials Science, Ceramics
Roman Yatskiv, Jan Grym, Sarka Kucerova, Stanislav Tiagulskyi, Ondrej Cernohorsky, Nikola Basinova, Jozef Vesely
Summary: This paper examines the effects of annealing atmosphere and temperature on defect-related emission in ZnO thin films and bulk substrates. The results demonstrate that post-annealing treatment is a powerful tool for modifying defects in ZnO and accurately tailoring emission wavelength. This research has significant implications in optoelectronics, particularly in LED, display, and biological labeling technologies.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
B. R. Kirthan, M. C. Prabhakara, H. S. Bhojya Naik, R. Viswanath, P. H. Amith Nayak
Summary: The study focuses on the synthesis of a novel Azo-imine ligand and its mixed ligand Cd(II) Complex, followed by the fabrication of CdO nanoparticles. Characterization using spectroscopic techniques and electrochemical studies revealed the compounds had strong photoluminescence, DNA binding, DNA cleavage activities, as well as satisfactory antibacterial properties.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Engineering, Electrical & Electronic
A. Timoumi, B. Tiss, W. Zayoud, A. Sharma, M. Kraini, N. Bouguila, C. Moura, L. Cunha, K. Khirouni
Summary: Thin-film-based solar cells are being widely investigated as a sustainable energy source, and this study explores the effect of annealing temperature on the physical properties of In2S3 and its implications for photovoltaic devices. The results show the formation of indium oxide at high annealing temperatures, and the annealing temperature also affects the band gap energy and conductivity of the samples.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Akbar Mirzaei, Edris Jamshidi, Ehsan Morshedloo, Shahrzad Javanshir, Faranak Manteghi
Summary: This study presents a novel method for the controlled synthesis of cadmium oxide and cadmium hydroxide with different morphologies, highlighting the role of chemical etching and the Kirkendall effect in particle formation. Increasing reducing agent concentration leads to intensified etching and larger particle size.
MATERIALS RESEARCH EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Yufan Wang, Guoqing Zu, Di Zhang, Ying Han, Weiwei Zhu, Huilan Sun, Bo Wang, Xu Ran
Summary: The effect of pre-annealing on the recrystallized texture of hot-rolled Fe-1.6 wt% Si non-oriented electrical steel was investigated. It was found that pre-annealing treatments caused the texture to change from a near-random distribution to {116} < 151 > texture and near-{001} < 140 > texture. The grain size remained almost unchanged, with an average size of 125 μm in the normalized bands. Furthermore, the pre-annealing process improved the magnetic properties of the material.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
D. J. Jeejamol, K. S. Jai Aultrin, M. Dev Anand
Summary: Cadmium oxide (CdO) photocatalysts prepared by co-precipitation with calcination and Al3+ doping showed enhanced photocatalytic activity for the degradation of methylene blue dye. The synthesized CdO samples had a single phase polycrystalline structure with suitable crystallite size. The presence of Al3+ dopant in CdO lattice was confirmed and the morphology of the samples exhibited active sites for photocatalytic process. The CdO nanoparticles with Al doping exhibited higher visible-light-driven photocatalytic activity compared to pure CdO.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Crystallography
Khalid Ridha Kadhim, Raghad Y. Mohammed
Summary: Nanostructured cadmium oxide (CdO) thin films were deposited using the chemical bath deposition (CBD) technique. The effect of annealing time on the crystallite size and optical properties of the films was analyzed. The results showed that the annealing time had a significant impact on the thin film properties.
Article
Physics, Applied
Abinash Adhikari, Pawel Strak, Piotr Dluzewski, Agata Kaminska, Ewa Przezdziecka
Summary: Semiconductor superlattices have wide applications in the electronic industry. In this study, a short-period superlattice structure composed of CdO and MgO layers was fabricated and its optical properties and pressure dependence of bandgap were investigated. The experimental results were supported by theoretical calculations, providing valuable insight for future optoelectronic applications.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Qinyu He, Chengyi Zhu, Yulong Liu, Wen Yan, Xiangliang Wan, Guangqiang Li
Summary: The microstructure, texture, mechanical properties, and magnetic properties of low carbon and silicon non-oriented electrical steels annealed at different temperatures were investigated. The results showed the presence of various precipitates, including fine precipitates and composite precipitates, in the samples annealed at higher temperatures. The magnetic properties of the experimental samples were found to be superior to commercially available steels of the same grade.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Rodrigo Leon-Guillen, Ana Luz Munoz-Rosas, Jesus A. Arenas-Alatorre, Juan Carlos Alonso-Huitron, Ana Laura Perez-Martinez, Arturo Rodriguez-Gomez
Summary: Silicon carbide (SiC) is a remarkable photonic material. The reproducible self-formation of silicon quantum dots (SiQDs) within SiC matrices has been achieved, which is beneficial for producing electroluminescent devices operating at high power, high temperatures, or high voltages. The introduction of SiQDs dramatically increases the photoluminescence-integrated intensity of SiC films, showing a normal distribution with positive skewness and well-defined intensity maxima in the blue region of the electromagnetic spectrum (439-465 nm), which is visible to the naked eye.
Article
Materials Science, Multidisciplinary
Ebitha Eqbal, E. Anila
Summary: Nanostructured transparent conducting SnO2 thin films were successfully grown on glass substrates via spray pyrolysis, showing an average transmission of 60% and a maximum conductivity of 24.86 S/cm for samples prepared at 0.2M concentration of precursor solution. The films exhibited Photoluminescence (PL) emission colors of green, greenish white, and bluish white depending on the intensities of excitonic and oxygen vacancy defect level emissions.
Article
Materials Science, Ceramics
Hussein Baqiah, Mohd Mustafa Awang Kechik, Rashad Al-Gaashani, Asla A. Al-Zahrani, Naif Mohammed Al-Hada, Na Zhang, Jian Liu, Shicai Xu
Summary: YFeO3 (YFO) thin films were prepared by sol-gel spin-coating technique and annealed at different temperatures. The phase formation, microstructural, optical, photoluminescence, and magnetic properties of the films were investigated. X-ray diffraction analysis showed the formation of hexagonal-YFO phase at 750-800°C and orthorhombic-YFO phase at 850-900°C. The h-YFO films had a homogeneous surface with uniform particle size, while the o-YFO films had larger and irregular particles. The optical band gap and magnetization increased with increasing annealing temperature, and the PL spectra of h-YFO films were redshifted compared to o-YFO films.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Condensed Matter
Heydar Honarvar Nazari, Laya Dejam
Summary: We investigated the effects of sputtering deposition and thermal annealing on the structural, optical, and photoluminescence properties of Al:ZnO (AZO) thin films. The results show that higher annealing temperature can modify the crystal orientation and grain size, as well as decrease the band gap. Post-annealing can suppress localized states and improve emission intensity, further enhancing the performance of the material.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Neelam Rani, Rachna Ahlawat
Article
Optics
Neelam Rani, Rachna Ahlawat
JOURNAL OF LUMINESCENCE
(2019)
Article
Materials Science, Multidisciplinary
Neelam Rani, Rachna Ahlawat, Bindiya Goswami
MATERIALS CHEMISTRY AND PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Chitra Bhukkal, Rachna Ahlawat
RESEARCH ON CHEMICAL INTERMEDIATES
(2020)
Article
Chemistry, Physical
Neelam Rani, Rachna Ahlawat, Bindiya Goswami
Article
Materials Science, Multidisciplinary
Chitra Bhukkal, Rajni Vats, Bindiya Goswami, Neelam Rani, Rachna Ahlawat
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Materials Science, Multidisciplinary
Chitra Bhukkal, Rajni Vats, Bindiya Goswami, Neelam Rani, Rachna Ahlawat
Summary: The synthesis of Cd1-xZnxO (0 ≤ x ≤ 1) nanopowder by co-precipitation method led to the discovery of varying crystal structures, higher photocatalytic activity associated with different morphologies and bandgap energies.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Chitra Bhukkal, Rajni Vats, Bindiya Goswami, Neelam Rani, Rachna Ahlawat
Summary: The study prepared Cu/Mn-doped Cd0.4Zn0.6O alloy using co-precipitation and investigated the effects of dopant concentration on the alloy properties. The doping significantly altered the crystal structure and optoelectronic properties of the alloy, showing potential as a superior TCO for material science researchers.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Rajni Vats, Rachna Ahlawat
Summary: This study investigates the effects of annealing time on the structural and optical properties of pure and Dy3+-doped CeO2 nanocrystals. The results show that annealing time influences the lattice parameters, bond angles, and photoluminescence properties, leading to changes in the band gap of the nanocrystals. Defect levels and color centers, such as oxygen vacancies, are found to play a significant role in tailoring the properties of the nanocrystals, making them potentially useful in photonics and oxygen storage devices.
INTERNATIONAL JOURNAL OF NANOSCIENCE
(2021)
Article
Chemistry, Physical
Neelam Rani, Bindiya Goswami, Rachna Ahlawat
Summary: The prepared samples of Er3+ doped SiO2 nanopowder were annealed at different temperatures and characterized by various techniques. The results showed that the annealed samples had nanocrystalline erbium oxide, which is useful for optical communication and other photonic devices.
Proceedings Paper
Physics, Condensed Matter
Neelam Rani, Rachna Ahlawat
DAE SOLID STATE PHYSICS SYMPOSIUM 2019
(2020)
Proceedings Paper
Multidisciplinary Sciences
Neelam Rani, Rachna Ahlawat
ADVANCES IN BASIC SCIENCES (ICABS 2019)
(2019)
Proceedings Paper
Multidisciplinary Sciences
Rajni Vats, Rachna Ahlawat
ADVANCES IN BASIC SCIENCES (ICABS 2019)
(2019)
Proceedings Paper
Physics, Applied
Neelam Rani, Rachna Ahlawat
DAE SOLID STATE PHYSICS SYMPOSIUM 2018
(2019)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
