Article
Chemistry, Multidisciplinary
Nizar Ben Moussa, Mohamed Lajnef, Nessrine Jebari, Cedric Villebasse, Fabien Bayle, Julien Chaste, Ali Madouri, Radouane Chtourou, Etienne Herth
Summary: In this study, low-cost sol-gel spin-coating technique was used to synthesize eco-friendly ZnO multilayer films with excellent optical properties and specific orientation suitable for piezoelectric applications. The ZnO sol-gel thin-films using precursor solutions of molarity 0.75 M exhibited an average optical transparency above 98% and an optical band gap energy of 3.42 eV, showing potential for eco-friendly and cost-effective applications in complementary metal-oxide-semiconductor (CMOS) and integrated circuits (IC).
Article
Chemistry, Inorganic & Nuclear
Dinesh Mani, S. Sundar Manoharan, Ganesan Sriram, G. Johnsy Arputhavalli, S. Jebasingh
Summary: Kinematically grown highly oriented hexagonal ZnO nanorods and nanograined films were fabricated on silicon substrates via pulsed laser deposition. The structural, morphological, optical properties, and gas sensing studies of ZnO nanostructured thin film were systematically investigated. The study demonstrated that ZnO nanorods exhibit a greater sensitivity response for the detection of acetaldehyde (CH3CHO) compared to ZnO nanograined films, suggesting their potential as a material for CH3CHO gas detection at room temperature.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
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
Physics, Condensed Matter
M. H. M. Abdelrehman, R. E. Kroon, E. Coetsee, A. Yousif, Hassan A. A. Seed Ahmed, H. C. Swart
Summary: Gd2-xO3:Bi-x = 0.003 thin films were successfully deposited on Si (100) substrates using the pulsed laser deposition technique. The microstructure, surface topography, chemical composition analysis, and luminescent properties of the samples were investigated. The influence of prolonged electron beam exposure on the samples' surface state, chemical composition, and cathodoluminescence stability was studied.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Analytical
Kamran Syed, Niksa Krstulovic, Juan Casanova-Chafer, Eduard Llobet, Frank Guell, Paulina R. Martinez-Alanis, Marijan Marcius, Ekaterina Shagieva, Davor Ristic, Hrvoje Gebavi, Nikola Baran, Mile Ivanda
Summary: ZnO films were prepared using pulsed laser deposition with different background atmospheres and their gas-sensing properties and microstructure characteristics were investigated. The films grown in an argon atmosphere showed a highly textured hexagonal crystalline structure with the c-axis perpendicular to the substrate plane. The vacuum-grown films exhibited better growth in the (100) plane. Raman and PL spectroscopy confirmed the presence of defects in both types of films. Gas-sensing experiments revealed that the vacuum-grown films had a higher response to nitrogen dioxide (NO2) at ppb levels compared to the argon-grown films, which was attributed to differences in crystallinity, microstructure, and defect type.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Bhubesh Chander Joshi, Aadarsh Kumar Chaudhri
Summary: In this study, Cu-doped ZnO thin films were prepared using the sol-gel method. The doping concentration was found to affect the crystallite size, band gap, and conductivity of the films. The doped films showed p-type conductivity initially but degraded with time. Ambient-exposed films converted to n-type, while vacuum-placed films maintained p-type behavior. It is suggested that if these films are well prepared, protected, and properly passivated, they can be used for optoelectronics devices.
Article
Materials Science, Multidisciplinary
Yalambaku Rajesh, Md Ahamad Mohiddon, M. Ghanashyam Krishna
Summary: Shape control of ZnO and Au nanostructures on thin films can be achieved by microwave assisted hydrothermal synthesis with different precursors. Zinc nitrate precursor leads to rice grain structures, while zinc acetate precursor results in hexagonal shapes.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Optics
Juby Alphonsa Mathew, Volodymyr Tsiumra, Jacek M. Sajkowski, Aleksandra Wierzbicka, Rafal Jakiela, Yaroslav Zhydachevskyy, Ewa Przezdziecka, Marcin Stachowicz, Adrian Kozanecki
Summary: The luminescence properties of Europium doped ZnO and ZnMgO thin films grown by Molecular Beam Epitaxy were studied, revealing that alloying Mg with ZnO significantly enhances the emission intensity of Eu3+ ions and efficient host to dopant energy transfer.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Z. R. Khan, Abdullah S. Alshammari, M. Bouzidi, Mohd. Shkir, D. K. Shukla
Summary: In this study, ZnO nanostructured thin films-based UV detectors were developed using a cost-effective sol-gel spin coating method. It was found that the UV detection performance and optical properties of the films can be significantly altered by adjusting the grain size and rpm. The prepared films also exhibit high optical transmittance in the visible region of the solar spectrum, providing a promising approach for improving the performance of ZnO nanostructures-based optoelectronic devices.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Physics, Condensed Matter
R. S. Ajimsha, A. K. Das, V. K. Sahu, P. Misra
Summary: The study found that Gd doped ZnO thin films are on the metallic side of the metal-insulator transition, but exhibit semiconductor properties at low temperatures. Weak localization plays a dominant role in the behavior of these films, and the phase coherent length varies with Gd concentration.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
O. Oberemok, V. Kladko, V. Melnik, O. Dubikovskyi, O. Kosulya, O. Gudymenko, B. Romanyuk, Z. Maksimenko, T. Sabov, O. Kolomys
Summary: This work investigates the impact of annealing temperature on the structural and optical properties of ZnO films implanted with Ho+ and Nd+ ions. Highly oriented nanorods arrays of ZnO films were synthesized on silicon substrates using RF magnetron sputtering. Ion implantation enhanced the crystallinity of the films. The temperature-induced changes in lattice parameters and sizes of ZnO nanocrystals in nanorods were observed. Threshold temperatures for bulk crystallization and the photoluminescent properties of nanorods were identified. The study reveals that the implanted elements are distributed uniformly throughout the film thickness and accumulate at the SiOx/Si interface during high-temperature annealing.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Pawan Kumar, Nisha, Prosenjit Sarkar, Sachin Singh, B. C. K. Mishra, Ram S. Katiyar
Summary: ZnO thin films were deposited on ITO coated glass substrate using the pulsed laser deposition technique at different annealing temperatures. The topological structure and optical properties of the films were affected by the post-annealing process, as confirmed by AFM and UV-Vis spectroscopy. Raman spectroscopy and XRD were used to confirm the presence of ZnO material. Surface roughness was slightly affected by annealing temperature. The calculated optical bandgap showed a decrease and then an increase with increasing annealing temperatures. The surface roughness of the ZnO thin films was associated with variations in the optical bandgap, suggesting the significant impact of post-growth annealing.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Ceramics
V. O. Anyanwu, M. K. Moodley
Summary: Aluminium doped with zinc oxide (98 wt %) (AZO) thin films were fabricated on glass substrates using pulsed laser deposition (PLD) technique, showing nanoscale structures and morphology. The deposition was performed at chosen substrate temperatures and low partial pressure. A laser energy density of 4 J/cm2 was utilized, which effectively ablated the bulk AZO and minimized droplets arrival on the substrates. The AZO films exhibited crystallite sizes ranging from 31.1 to 45.4 nm, and the lowest resistivity was achieved at 6.8 x 10-5 ohm cm with an average optical transmittance of 83% in the UV-vis-NIR region. The PLD technique provides a significant avenue for crack-free and reliable thin film growth with improved electrical and optical properties.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Boutheina Ben Abdelaziz, Nazir Mustapha, Idriss M. Bedja, Osamah Aldaghri, Hajo Idriss, Moez Ibrahem, Khalid H. Ibnaouf
Summary: This study examines the impact of zinc oxide nanoparticles (ZnO NPs) on the spectrum features of MDMO-PPV. Different techniques were used to assess the characteristics of MDMO-PPV and doped ZnO NP samples. The addition of ZnO NPs resulted in significant changes in the UV-Vis and PL spectra, including shifts in absorption bands and improvements in spectral profiles.
Article
Engineering, Electrical & Electronic
Mengyun Peng, Pingchun Guo, Hedong Jiang, Jiake Li, Hua Zhu, Jian Sun, Yanxiang Wang
Summary: A simple and effective method was developed to improve the properties of zinc oxide (ZnO) thin films. The addition of nitrogen (N) and the reduction of oxygen vacancy defects were confirmed after the ammonia water vapor treatment. The treatment resulted in a more uniform distribution of grains in the samples, with a slight increase in particle size. The light transmittance increased and the thin-film resistivity decreased significantly, making the ZnO films more suitable for various applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Energy & Fuels
Yedluri Anil Kumar, Mani Govindasamy, Mohan Reddy Pallavolu, Sangaraju Sambasivam, Sunkara Srinivasa Rao, Ramesh Reddy Nallapureddy, Ayman Ahmed Ghfar, Ammar Mohamed Tighezza
Summary: The interior and interface coexisting design of cobalt-doped NiFe2S4 nano sheets on nickel foam (Co-NiFe2S4) were synthesized via a two-step hydrothermal approach. The Co-NiFe2S4 composite exhibited superior electrochemical performance with high capacity and excellent capacity retention, making it a promising electrode material for high-performance supercapacitors.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Yedluri Anil Kumar, G. Mani, Mohan Reddy Pallavolu, Sangaraju Sambasivam, Ramesh Reddy Nallapureddy, Manickam Selvaraj, M. Alfakeer, Aboud Ahmed Awadh Bahajjaj, Mohamed Ouladsmane, Sunkara Srinivasa Rao, Seeram Ramakrishna
Summary: In this research, a tungsten disulfide/iron cobaltite interwoven construction array was prepared and used as an integrative electrode for supercapacitors. The WS2/FeCo2O4 nanosheets provided a larger surface area and sufficient space for volume changes, leading to prominent energy storage performances in the supercapacitors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Rajangam Vinodh, Rajendran Suresh Babu, Sangaraju Sambasivam, Chandu V. V. Muralee Gopi, Salem Alzahmi, Hee-Je Kim, Ana Lucia Ferreira de Barros, Ihab M. Obaidat
Summary: Supercapacitors, with their excellent capacitance and rate efficiency, extended durability, and cheap materials price, are regarded as one of the most promising energy storage devices. The choice of electrode materials is critical for the performance of supercapacitors. The combination of polyaniline (PANI) and metal-organic frameworks (MOFs) as electrode materials shows additional benefits and is predicted to be the next-generation electrode materials for efficient supercapacitors.
Review
Chemistry, Multidisciplinary
Bhaskar Parida, Arjun Singh, Abdul Kareem Kalathil Soopy, Sambasivam Sangaraju, Madhulita Sundaray, Satrujit Mishra, Shengzhong (Frank) Liu, Adel Najar
Summary: Perovskite solar cells have emerged as a next-generation photovoltaic technology due to their high conversion efficiency and low cost compared to traditional silicon solar cells. Printing technologies have been found to be effective in fabricating high-quality perovskite films and improving the power conversion efficiency. These techniques have the potential to overcome challenges in commercializing perovskite solar cells.
Article
Materials Science, Multidisciplinary
Sivajee Ganesh Kapu, Phaneendra Reddy Guddeti, Sangaraju Sambasivam, Subba Rao Yakkate, Sang W. Joo, Mohan Reddy Pallavolu
Summary: In this study, a nanocomposite of Ni(OH)2/g-C3N4 was successfully synthesized using a simple method. The nanocomposite exhibited high specific capacitance, good rate capability, and cycle stability, making it a promising electrode material for superior performance supercapacitors.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Analytical
Mohan Reddy Pallavolu, Himadri Tanaya Das, Yedluri Anil Kumar, Mu Naushad, Sangaraju Sambasivam, Jae Hak Jung, Sang W. Joo
Summary: The hydrothermally synthesized Sn3O4 flower-type nanostructure exhibits high electrochemical activity and charge storage in supercapacitors, and when combined with activated carbon in an asymmetric device, it shows promising performance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
L. Syam Sundar, Sangaraju Sambasivam, Hiren K. Mewada
Summary: Experiments were conducted to investigate the thermal conductivity, viscosity, density, and specific heat of water-based ZrO2 nanofluids. The results showed that the addition of nanoparticles increased the thermal conductivity and viscosity, while also increasing the density and decreasing the specific heat.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Energy & Fuels
Pantrangi Manasa, Sangaraju Sambasivam, Fen Ran
Summary: This review focuses on recent research progress in biomass-derived carbon electrode materials for supercapacitor applications, including materials derived from plants, fruits, vegetables, animal waste, and microorganisms. The review also discusses various synthesis methods for converting and activating biomass waste. Furthermore, it provides a summary and future research trends in this field.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Multidisciplinary
G. Vijayakumar, H. Jude Leonard Hilary, P. Nisha, Elangovan Thangavel, Sangaraju Sambasivam
Summary: In this study, PEG-functionalized bare and Mn-doped TiO2 nanoparticles were synthesized and their anticancer efficacy against human liver carcinoma cells was tested. SEM, TEM, and XRD analysis revealed spherical-like morphology and crystallite size ranging from 7 to 10 nm. Optical measurements showed a shift in absorption edge and a decrease in band gap energy with increasing Mn content in the TiO2 nanoparticles. The prepared samples were also tested for antibacterial activity and exhibited Reactive Oxygen Species-mediated anticancer effects against human liver hepatocellular carcinoma cell lines.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Xiangya Wang, Qianqian Zhang, Lei Zhao, Mohammed Kamal Hadi, Sangaraju Sambasivam, Qi Zhou, Fen Ran
Summary: In this study, a new hydrogel electrolyte membrane with carboxylated chitosan, acrylamide, and glycerol was fabricated, which demonstrated renewable property and environmental stability, along with high ionic conductivity. The supercapacitor assembled with this hydrogel electrolyte membrane could operate effectively in a wide temperature range and exhibited stable electrochemical performance compared to other electrolyte membranes.
JOURNAL OF POWER SOURCES
(2023)
Article
Polymer Science
Suguna Perumal, Raji Atchudan, Thomas Nesakumar Jebakumar Immanuel Edison, Sambasivam Sangaraju, Weslen Vedakumari Sathyaraj, Yong Rok Lee
Summary: A one-step hydrothermal-assisted carbonization process was used to prepare nitrogen/phosphorous-doped carbon dots from a water-soluble polymer, PMPC. The prepared P-CDs exhibited bright fluorescence, excellent photostability, excitation-dependent emission, and high quantum yield. They were explored as fluorescent ink for anti-counterfeiting and cellular multicolor imaging.
Article
Chemistry, Physical
Raji Atchudan, Suguna Perumal, Thomas Nesakumar Jebakumar Immanuel Edison, Ashok K. Sundramoorthy, Namachivayam Karthik, Sambasivam Sangaraju, Seung Tae Choi, Yong Rok Lee
Summary: Heteroatom-doped porous carbon material (H-PCM) was synthesized from cashew nut's skin through a simple pyrolysis route. The synthesized H-PCM exhibited a porous structure with sponge-like and sheet-like morphology, as well as a moderate degree of graphitization/crystallinity and various functionalities. The as-prepared H-PCM showed excellent electrocatalytic activity for hydrogen evolution reaction (HER) in 0.5 M H2SO4 aqueous solution, making it a promising candidate for metal-free carbonaceous catalysts in large-scale hydrogen production through electrochemical water splitting.
Article
Chemistry, Physical
Somasundaram Chandra Kishore, Suguna Perumal, Raji Atchudan, Thomas Nesakumar Jebakumar Immanuel Edison, Ashok K. Sundramoorthy, Muthulakshmi Alagan, Sambasivam Sangaraju, Yong Rok Lee
Summary: In this study, functionalized carbon nanodots (F-CNDs) were synthesized from cashew nut skin waste using a hydrothermal method. The F-CNDs exhibited excellent dispersion, hydrophilicity, and biocompatibility. These findings suggest that the F-CNDs may have potential applications in the field of biomedicine.
Article
Chemistry, Multidisciplinary
B. Arjun Kumar, Thangavel Elangovan, Dharmalingam Karthigaimuthu, D. Aravinth, Gopal Ramalingam, Fen Ran, Sambasivam Sangaraju
Summary: In this study, a CdSe quantum dots-decorated ternary metal oxide nanocomposite of ZnO/TiO2/CuO was synthesized via a simple hydrothermal method. The nanocomposite exhibited promising performance as photoanodes in DSSCs and as photocatalysts for industrial dye solution. The CdSe@CuO/TiO2/ZnO sample showed a photon conversion efficiency of 3.68% in DSSC and a photocatalytic degradation efficiency of 96%.
Article
Chemistry, Multidisciplinary
Rosaiah Pitcheri, Guru Prakash Nunna, Dhananjaya Merum, Bandar Ali Al-Asbahi, Sambasivam Sangaraju, Chalapathi Uppala, Si-Hyun Park
Summary: The researchers synthesized bifunctional electrode materials, ZnMn2O4/rGO, by using a simple hydrothermal route. The composite exhibited a specific surface area of 67.82 m(2) g(-1) and demonstrated bifunctional behavior for both lithium-ion batteries and supercapacitors. It displayed exceptional discharge/charge capacity and maintained stable cycling behavior even after multiple cycles, making it a promising candidate for energy storage applications.
NEW JOURNAL OF CHEMISTRY
(2023)
