Article
Materials Science, Multidisciplinary
Indira Gandhi Tamizhmani, Raja Sakthivel, Ramesh Babu Ramraj, Arivanandhan Mukannan
Summary: This work investigates the impact of Ni doping on the structural, morphological, electrical, and optical characteristics of SnO2 thin films. The results show that Ni doping affects the grain size, electrical conductivity, and optical transmittance of the films. Ni-doped SnO2 films exhibit slightly different electrical properties compared to undoped films, while the 2.0 at.% Ni:SnO2 film demonstrates high optical and electrical conductivity.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Petros-Panagis Filippatos, Nikolaos Kelaidis, Maria Vasilopoulou, Dimitris Davazoglou, Alexander Chroneos
Summary: Density functional theory calculations were performed to investigate structural changes and electronic properties of halogen-doped tin oxide. The results showed a reduction in bandgap values and formation of gap states, with iodine doping increasing the dielectric constant and reducing the bandgap, making it more suitable for photovoltaic applications.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Ceramics
Arslan Ashfaq, Lassaad K. Smirani, Mohamed Abboud, Ubaid ur Rehman, Mohammed M. Fadhali, H. H. Hegazy, Md Amzad Hossain, A. Ali, K. Mehmood, N. Amin
Summary: Tin dioxide (SnO2) doped with highly valence bismuth (Bi) has shown improved thermoelectric properties. Pure and Bi doped SnO2 nanoparticles were synthesized using a hydrothermal method. The Seebeck coefficient increased from -56 to -83 mu V/degrees C as the Bi content increased. This improvement was attributed to the inclusion of bismuth atoms and the presence of secondary phases based on BiO2. However, the electrical conductivity decreased with increasing Bi doping due to increased impurities. The Sn1-xBixO2 sample with x = 15 achieved the highest Seebeck value and an increased power factor.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Nuha Y. Elamin, T. Indumathi, E. Ranjith Kumar
Summary: Green synthesis was used to prepare SnO2 and SFO nanoparticles from Morinda citrifolia leaf extracts, avoiding the use of toxic chemicals and providing a cost-effective and environmentally friendly approach. The synthesized nanoparticles showed promising antibacterial and anticancer activities, suggesting their potential applications in healthcare and human health improvement.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Likun Wang, Jingkai Yang, Hongli Zhao, Yong Liu, Gaorong Han, Jianxun Wang
Summary: A novel F and Nb co-doped SnO2 thin film with a rutile TiO2:Sn buffer layer showed improved crystallinity and reduced residual stress, resulting in increased carrier concentration and decreased resistivity. The film also exhibited an extremely low emissivity.
SURFACES AND INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Pooja Khajuria, Vishav Deep Sharma, Rubby Mahajan, Ram Prakash, R. J. Choudhary
Summary: This article investigates the influence of doping Sm3+ ions in the Ba3Zr2O7 host lattice. Ba3(1-x)Zr2Sm3xO7 samples with different Sm3+ concentrations were prepared using a solution combustion route. XRD and XPS techniques were employed to study the structure and chemical compositions of the phosphor. The results showed that Sm3+ doping significantly affected the luminescence spectra of Ba3Zr2O7 phosphor, making it a promising candidate for amber gap filling in LEDs.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Dipak Bhowmik, Sudeep Bhattacharjee
Summary: This article investigates the modification of optical, structural, and electrical properties of indium-tin-oxide (ITO) thin films through argon ion implantation. The optical transmission is enhanced with increasing ion doses, and the optical bandgap can be tailored. Ion implantation also affects the crystal structure and element concentration. The electrical properties of ion-implanted ITO films can be tuned, and theoretical simulation supports the experimental observations.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
I. Z. Al-Yahmadi, A. Gismelssed, I. A. Abdel-Latif, F. Al 'Mari, A. Al-Rawas, S. Al-Harthi, I. A. Al-Omari, A. Yousf, H. Widatallah, M. ElZain, M. T. Z. Myint
Summary: The study investigated the magnetocaloric effect in an array of nanocomposites manganite Nd1-xSrxMnO3, where the replacement of Nd3+ by Sr2+ influenced the structure and enhanced magnetic properties. All samples exhibited ferromagnetic to paramagnetic transition with increasing temperature and showed phase transitions, except Nd0.6Sr0.4MnO3, which exhibited a peak Curie temperature near room temperature. The Nd0.6Sr0.4MnO3 nanocomposite showed a relatively giant value of magnetic entropy, making it a potential material for magnetic cooling applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
B. M. Basavaraja Patel, M. Revanasiddappa, D. R. Rangaswamy
Summary: Iron-decorated polypyrrole-stannic oxide nanocomposites were synthesized by in situ polymerization and their structural characteristics, morphology, electrical conductivity, and electromagnetic shielding interference (EMI) properties were investigated. The results showed that the composites exhibited enhanced conductivity and effective EMI shielding, making them promising for electronic, electrical, and EMI shielding applications.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Parasmani Rajput, Mangla Nand, Mukul Gupta, P. R. Sagdeo, A. Sagdeo, S. K. Sharma, A. A. Coelha, S. N. Jha, D. Bhattacharyya, Manvendra Kumar
Summary: In this study, ZnO, Zn0.94Co0.06O, and Zn0.94Co0.06O/ZnO heterostructure thin films were prepared using RF ion beam sputtering, with analyses conducted on their structural, optical, and magnetic properties. The results indicated a type-II band alignment in the studied system.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
R. Gherbi, M. Benamira, Y. Bessekhouad
Summary: Mg-doped spinel ZnMn2O4 was synthesized using a sol-gel method, and its textural, electrochemical, and photocatalytic properties were investigated. The results showed that with increasing Mg content, the specific surface area and porosity of the material increased, leading to improved photocatalytic performance and higher efficiency in degrading Methylene Blue.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
Rubby Mahajan, Ram Prakash, Sandeep Kumar, Vinay Kumar, R. J. Choudhary, D. M. Phase
Summary: In this study, Mg3(1-x)Dy3x(PO4)(2) phosphors with varying doping ratios were successfully synthesized using urea as fuel. XRD analysis confirmed a monoclinic structure for both undoped and Dy3+ (2 mol. %) doped phosphors. The PL emission spectra showed yellowish white light emission when excited with near UV light, and the band gap of Dy3+ (2 mol. %) doped Mg-3(PO4)(2) was decreased compared to undoped phosphor due to the formation of intermediate energy levels.
Article
Chemistry, Analytical
Weronika Izydorczyk, Jacek Izydorczyk
Summary: This study conducted experiments on SnO2 thin layers to investigate the dependencies between stoichiometry, electrochemical properties, and structure. Different gas-sensing layers were fabricated by two methods and characterized for their crystalline structure and chemical composition. The layer resistance, oxygen concentrations, and temperature range were analyzed, with theoretical modeling assumptions for comparing measurement results.
Article
Materials Science, Multidisciplinary
Monika Duhan, Shashank Bharadwaj, Anita Gupta, Harminder Kaur
Summary: This study reports the defect induced room temperature ferromagnetism (RTFM) in (La, Gd) codoped SnO2 nanostructures prepared by sol-gel method. The observed RTFM is mainly attributed to the presence of oxygen vacancies, which is supported by Photoluminescence (PL) measurements showing emissions associated with vacancies/defects.
Article
Materials Science, Ceramics
Daniel Bremecker, Mihail Slabki, Jurij Koruza, Juergen Roedel
Summary: This article analyzes the influence of Mg-doping on the 0.94Na(1/2)Bi1/2TiO3-0.06BaTiO(3) system, a lead-free piezoelectric material, and quantifies the electrical and structural properties. The results show that Mg doping significantly increases the electrical conductivity and Q(m) of the material, making Mg-doped 0.94Na(1/2)Ni(1/2)TiO(3)-0.06BaTiO(3) an excellent candidate for high-power applications.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Inorganic & Nuclear
Swati Das, Subhajit Saha, Dipayan Sen, Uttam Kumar Ghorai, Kalyan Kumar Chattopadhyay
DALTON TRANSACTIONS
(2015)
Article
Chemistry, Multidisciplinary
Arunava Jha, Sudipta Kumar Sarkar, Dipayan Sen, K. K. Chattopadhyay
Article
Chemistry, Multidisciplinary
Uttam Kumar Ghorai, Subhajit Saha, Nilesh Mazumder, Nirmalya S. Das, Diptonil Banerjee, Dipayan Sen, Kalyan K. Chattopadhyay
Article
Chemistry, Physical
Arunava Jha, Rajarshi Roy, Dipayan Sen, Kalyan K. Chattopadhyay
APPLIED SURFACE SCIENCE
(2016)
Article
Chemistry, Physical
Bikram Kumar Das, Dipayan Sen, K. K. Chattopadhyay
Article
Chemistry, Multidisciplinary
Karamjyoti Panigrahi, Swati Das, Subhajit Saha, Biswajit Das, Dipayan Sen, Promita Howli, Kalyan Kumar Chattopadhyay
Article
Materials Science, Multidisciplinary
Supratim Maity, Nirmalya Sankar Das, Saswati Santra, D. Sen, Kalyan Kumar Chattopadhyay
CURRENT APPLIED PHYSICS
(2016)
Article
Spectroscopy
Rajarshi Roy, Nilesh Mazumder, Gundam Sandeep Kumar, Hitesh Mamgain, Uttam Kumar Ghorai, Dipayan Sen, Kalyan Kumar Chattopadhyay
JOURNAL OF RAMAN SPECTROSCOPY
(2016)
Article
Chemistry, Multidisciplinary
Rajarshi Roy, Ranjit Thapa, Gundam Sandeep Kumar, Nilesh Mazumder, Dipayan Sen, S. Sinthika, Nirmalya S. Das, Kalyan K. Chattopadhyay
Article
Chemistry, Physical
Bikram Kumar Das, Dipayan Sen, K. K. Chattopadhyay
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Chemistry, Multidisciplinary
Madhupriya Samanta, Uttam Kumar Ghorai, Biswajit Das, Promita Howli, Swati Das, Dipayan Sen, Kalyan Kumar Chattopadhyay
Article
Chemistry, Physical
Dipayan Sen, Piotr Blonski, Michal Otyepka
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Materials Science, Multidisciplinary
Dipayan Sen, Gour Jana, Nitin Kaushal, Anamitra Mukherjee, Tanusri Saha-Dasgupta
Article
Physics, Multidisciplinary
Dhani Nafday, Dipayan Sen, Nitin Kaushal, Anamitra Mukherjee, Tanusri Saha-Dasgupta
PHYSICAL REVIEW RESEARCH
(2019)
Article
Chemistry, Multidisciplinary
P. Bhowmick, D. Banerjee, S. Santra, D. Sen, B. Das, K. K. Chattopadhyay
Article
Materials Science, Multidisciplinary
Honggyun Kim, Jamal Aziz, Vijay D. Chavan, Deok-kee Kim
Summary: Silicon nitride films were prepared using plasma enhanced chemical vapor deposition with different trap densities induced by adjusting the RF power ratio. It was found that the film's trap density was lowest under compressive stress and increased under tensile stress. This study has significant implications for the formation of durable nitride films in various electronic and optoelectronic applications.
CURRENT APPLIED PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Qiang Yu, Huwei Zhao, Yue Zhao
Summary: Zinc oxide thin films and Al-doped zinc oxide films were prepared and characterized in this study. The addition of Al ions was found to change the growth orientation, increase the grain size, and enhance the absorption intensity in the visible light region. Furthermore, the addition of Al ions also increased the forward current in the heterojunction.
CURRENT APPLIED PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Sang Woo Lee, Min Sun Park, Sangwon Wi, So Yeon Lim, Yeseul Lee, Jin-Seok Chung, Sang Mo Yang
Summary: In this study, we investigated the dynamics of domain switching in pristine and fatigued BiFeO3 capacitors through experimental observations and measurements. The results showed that the switching in the pristine capacitors was dominantly driven by domain growth, while the fatigued capacitors exhibited two different switching dynamics, in which nucleation played a critical role.
CURRENT APPLIED PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Boshi Wang, Tianyi Wang, Yufang Liu, Kun Yu
Summary: In this paper, a tunable and anisotropic perfect absorber composed of anisotropic black phosphorus (BP) and isotropic graphene is proposed. The structure exhibits high absorption and strong anisotropic plasma response. The resonance characteristics can be effectively controlled by adjusting geometric parameters and doping levels, offering potential applications.
CURRENT APPLIED PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Xiaolan Liu, Chunyang Li, Tonghui Yang, Naiqiang Yin, Gangling Zhao
Summary: Water drop triboelectric nanogenerators (WD-TENGs) can harvest energy from raindrops and improve the output performance of TENGs.
CURRENT APPLIED PHYSICS
(2024)