Article
Engineering, Electrical & Electronic
M. Neetha Mehathaj, N. Padmanathan, E. Sivasenthil
Summary: Simultaneous Co doping and hydrogenation on ZnO nanoparticles were achieved via chemical reduction. The results showed that the structure of ZnO did not change after Co doping and hydrogenation. The presence of visible emission due to oxygen vacancy and Co2+ induced fluorescent quenching was confirmed. The magnetic behavior of ZnO changed to ferromagnetic after Co doping and hydrogenation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
S. Vinoth, A. M. S. Arulanantham, S. Saravanakumar, R. S. Rimal Isaac, N. Soundaram, N. Chidhambaram, Devarajan Alagarasan, S. Varadharajaperumal, Mohd. Shkir, S. AlFaify
Summary: Cobalt-doped ZnO thin films synthesized using chemical bath deposition show excellent UV photosensing properties, with nanowire morphology and hexagonal wurtzite crystal structure. Due to the replacement of Co2+ ions, an increase in crystallite size and decrease in bandgap was observed, leading to high photoabsorption capability, with the highest responsivity reaching 0.918 AW(-1).
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Laya Dejam, Slawomir Kulesza, Jamshid Sabbaghzadeh, Atefeh Ghaderi, Shahram Solaymani, Stefan Talu, Miroslaw Bramowicz, Mitra Amouamouha, Amir Hossein Salehi Shayegan, Amir Hossein Sari
Summary: In this study, thin films of undoped ZnO, ZnO doped with Al, ZnO doped with Cu, and co-doped ZnO with Al and Cu were deposited on quartz substrates using RF sputtering. The samples were investigated for their advanced fractal features, crystalline structure, and optical properties. The results showed that the films had different morphologies and transmission spectra, with the co-doped sample exhibiting the highest transparency in the visible region and a desirable band gap.
RESULTS IN PHYSICS
(2023)
Article
Chemistry, Physical
Ho Viet Thang, Thong Le Minh Pham, Gianfranco Pacchioni
Summary: The electronic properties of N-doped ZnO/Cu(111) bilayer films were studied using the DFT+U method, showing differences in oxidation state of N compared to free-standing ZnO bilayer films. The extra negative charge of N in N:ZnO/Cu(111) was attributed to electron transfer from the Cu support. This difference in oxidation state of the N dopant was demonstrated through analysis of Bader charge, magnetization, and density of states.
Article
Materials Science, Multidisciplinary
Amr A. Nada, Benjamin O. Orimolade, Heba H. El-Maghrabi, Babatunde A. Koiki, Matthieu Rivallin, Maged F. Bekheet, Roman Viter, Daina Damberga, Geoffroy Lesage, Igor Iatsunskyi, Emerson Coy, Marc Cretin, Omotayo A. Arotiba, Mikhael Bechelany
Summary: This study investigated the use of palladium loaded zinc oxide/carbon nanofibers as a novel photoanode for photoelectrocatalytic degradation of paracetamol. The results showed that the composite electrode exhibited higher photoelectrochemical activity and achieved efficient removal of paracetamol with significant mineralization. The Pd-ZnO/C composite has great potential for the photoelectrocatalytic removal of organic micropollutants.
APPLIED MATERIALS TODAY
(2021)
Article
Engineering, Electrical & Electronic
Asaad S. S. Yasir, Ammar S. S. Hameed, Noor J. J. Ridha, Firas K. Mohamad Alosfur, Khawla J. J. Tahir, Rajaa A. A. Madlol
Summary: Ag nanoparticles doped ZnO nanorods were prepared using hydrothermal method for glucose biosensor. The effects of Ag NPs doping on the properties of ZnO NRs were investigated. The catalytic properties of glucose oxidase and the functionality of the glucose sensor were also studied.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Physics, Condensed Matter
Xiang Yu, Yang Gao, Shicheng Sun, Qi Sui, Xiaolei Song, Qiuyu Fan
Summary: The Co content plays a crucial role in the magnetic and electric properties of ZnO:Co films. Increasing the Co content leads to higher surface roughness, crystalline size, electrical conductivity, carrier concentration, mobility, and saturation magnetization in the prepared films.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Nanoscience & Nanotechnology
Peiran Tian
Summary: Metal-doped zinc oxide films exhibit excellent ultrafast nonlinear absorption behavior with potential applications.
Article
Engineering, Electrical & Electronic
M. Dilip Kumar, Harish Sharma Akkera, Nagaiah Kambhala, Upendra Kumar Kagola, C. S. Ramesh, K. Vijaya Kumar
Summary: Pure and Sm-doped β-Ga2O3 thin films were prepared using the sol-gel spin coating method and their structural, morphological, and optical properties were investigated. The addition of Sm greatly improved the crystalline quality of the films. Characterization measurements confirmed successful incorporation of Sm into the β-Ga2O3 host lattice. Photoluminescence spectra exhibited a wide blue band region centered at 439 nm in all films. The average optical transmittance was above 73% in the visible spectra for all films. The optical band gap energy (Eg) decreased from 4.83 eV for pure β-Ga2O3 film to 4.68 eV for 5 at% Sm-doped β-Ga2O3 films.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Mahmoud K. Abdel-Latif, Mohamed Mobarak, Neerish Revaprasadu, Abdel Hameed Ashraf, Waled Othman, Moatasem Mostafa Khalefa, Ahmed A. Aboud, Motaz Ismail
Summary: This study investigates the optical and electrical properties of pure and lanthanum-doped zinc oxide thin films prepared using the spray pyrolysis technique. X-ray diffraction shows that crystalline ZnO thin films with (002) preferred orientation are formed after La-doping. Raman spectra confirm the deposition of single ZnO phase without impurity phases. The optical bandgap increases upon doping, reaching a maximum at 3 wt% La-content.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Liangliang Huang, Dongfeng Diao, Yuanyuan Cao
Summary: This study investigated the electrochemical corrosion behaviors of N-doped graphene sheets embedded carbon (N-GSEC) film in H2SO4 solutions. The corrosion of N-GSEC film originated from the oxidation of carbon, resulting in the formation of N-doped graphene oxides and more exposed graphene edges, which significantly improved the electron transfer rates and electrochemical activity. The corroded N-GSEC exhibited much higher electrocatalytic activity for phenol biomolecules.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Md. Azizar Rahman, S. M. Naimul Mamun, Abul Kashem Mohammad Akther Hossain, Cuong Ton-That
Summary: In this work, an efficient p-n homojunction LED is fabricated based on the secondary growth of Ga-doped ZnO (GZO) nanorods onto a p-type Li-doped ZnO (LZO) thin film. The optimized GZO nanorods and LZO films exhibit low turn-on voltage and bright-yellow-orange electroluminescence. The optimized LED based on the GZO nanorods is 16 times more efficient in EL than the equivalent device made from ZnO nanorods.
ACS APPLIED NANO MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Yu Yao, Dandan Sang, Liangrui Zou, Dong Zhang, Qingru Wang, Xueting Wang, Liying Wang, Jie Yin, Jianchao Fan, Qinglin Wang
Summary: The hydrothermal approach was used to fabricate a heterojunction of n-Al:ZnO nanorods/p-BDD, which showed increased photoluminescence intensity and a blue shift of the UV emission peak compared to the n-ZnO NRs/p-BDD heterojunction.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Yulia E. Samoshkina, Irina S. Edelman, Hsiung Chou, Hsien-Chi Lin, Gopeshwar D. Dwivedi, Dmitry A. Petrov, Sergey M. Zharkov, Galina M. Zeer, Maxim S. Molokeev
Summary: (Co + Al)-doped ZnO films synthesized by RF magnetron sputtering in a mixed atmosphere of Ar + H-2 exhibit superior magnetic and optical properties, showing ferromagnetic behavior at room temperature and high electric conductivity. These characteristics are believed to be associated with defect-related mechanisms.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Metallurgy & Metallurgical Engineering
Emine Guneri, Johnson Henry, Fatma Gode, Nilgun Kalaycioglu Ozpozan
Summary: Pure ZnO and Mn-doped ZnO thin films were prepared by chemical bath deposition method with various Mn doping concentrations. The structural, morphological, and optical properties of the films were analyzed using different techniques. XRD analysis revealed hexagonal structured ZnO in all films, with a peak shift observed in Mn-doped films. The crystallite size increased with Mn doping. The surface morphology of Mn-doped films exhibited irregularly shaped agglomerated particles. The transmittance spectra showed higher transmittance in the visible region, which decreased with Mn doping, indicating increased optical absorption. The band gap of Mn-doped films decreased with Mn doping. Mn-doped films exhibited higher optical and electrical conductivity in the UV region.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)