Article
Chemistry, Physical
Cristiane B. Goncalves, Rafael T. da Silva, Gustavo Dalenogare, Isabelle M. D. Gonzaga, Lucia H. Mascaro, Mateus M. Ferrer, Marcelo Assis, Elson Longo, Hugo B. de Carvalho, Antonio C. Doriguetto
Summary: This study presents a comprehensive analysis of morphology, microstructure, and optical properties of electrodeposited Cu2O thin films on SnO2:F substrates. The films exhibited stability, purity, and crystallinity, with various morphologies and growth orientations. These findings make a significant contribution to the exploration of multifunctional semiconductor materials for various advanced technologies.
SURFACES AND INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
S. Santhosh Kumar Jacob, I. Kulandaisamy, I. Loyola Poul Raj, Ahmed A. Abdeltawab, Sayed Z. Mohammady, Mohd Ubaidullah
Summary: This study prepared Cu2O and Cu2O:Zn films using the Nebulizer spray technique and characterized them using various methods. Increasing the doping concentration led to significant changes in morphology and surface roughness, while the optical studies showed variation in band gap for all doped Cu2O films. The samples exhibited high responsivity, EQE, and detectivity, with fast response and decay times, suggesting potential for designing excellent photodetectors.
Article
Chemistry, Physical
Laima Trinkler, Dajin Dai, Liuwen Chang, Mitch Ming-Chi Chou, Tzu-Ying Wu, Jevgenijs Gabrusenoks, Dace Nilova, Rihards Ruska, Baiba Berzina, Ramunas Nedzinskas
Summary: The luminescent properties of epitaxial Cu2O thin films were compared with Cu2O single crystals in the temperature range of 10-300 K. The thin films were deposited epitaxially on Cu or Ag substrates with different processing parameters. The luminescence spectra of the thin films showed emission bands corresponding to V-O(2+), V-O(+), and V-Cu defects at approximately 720, 810, and 910 nm, respectively. Additionally, there were unidentified emission bands observed around 650-680 nm.
Article
Engineering, Electrical & Electronic
Daniel A. Fentahun, Alekha Tyagi, Sugandha Singh, Prerna Sinha, Amodini Mishra, Somnath Danayak, Rajesh Kumar, Kamal K. Kar
Summary: The deposition temperature plays a critical role in determining the quality and properties of Cu2O thin films, with 60 degrees Celsius identified as the optimum temperature. Studies show that the films deposited at this temperature exhibit significant changes in optical, electrical, and structural properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Coatings & Films
Eduardo Vega, Sundar B. Isukapati, Tom N. Oder
Summary: The properties of gallium oxide thin films deposited on c-plane sapphire substrates using radio frequency magnetron sputtering under various conditions were investigated. The films showed excellent transparency and specific structural properties, with the addition of tin affecting the optical characteristics of the films.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Materials Science, Multidisciplinary
Tingting Liu, Qingyou Liu, Yikai Jiang, Guohao Xia, Ruijin Hong, Chunxian Tao, Qi Wang, Hui Lin, Zhaoxia Han, Dawei Zhang
Summary: Laser irradiation was employed to modify Cu2O/Ag/Cu2O nanocomposite films, leading to improved crystal quality, enhanced Ag plasma peak, and induced oxygen vacancy defects. The third-order nonlinear coefficient of the sandwich structure samples increased significantly after laser irradiation, showing a switch from saturated absorption to reverse saturated absorption as excitation energy increased. The nonlinear performance enhancement was also confirmed by FDTD simulation results.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
M. Sh. Abdel-wahab, Ahmed H. Hammad
Summary: Copper oxide thin films doped with nickel were prepared using sputtering technique, and the content of nickel in the lattice was controlled by changing the sputtering power. Different nickel contents led to structural changes in the copper oxide lattice, affecting lattice strain, grain size, and optical properties of the films.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Victor Sunday Aigbodion
Summary: The application of silica nanoparticles derived from rice husk and doped Cu2O thin films in solar cells was investigated. It was found that SiO(2)np:Cu2O thin films exhibited improved electrical, optical, and microstructural properties, leading to enhanced power conversion efficiency.
Article
Chemistry, Physical
Sana K. Khalaf, Qusay M. A. Hassan, C. A. Emshary, H. A. Sultan
Summary: Polyvinyl alcohol doped nigrosin films were fabricated and characterized on glass substrates. The results showed that these films exhibited high linear and nonlinear susceptibilities, and demonstrated potential in optical limiting applications.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Engineering, Electrical & Electronic
N. Aravind, M. C. Santhosh Kumar
Summary: Cu2FeSnS4 (CFTS) is a promising p-type semiconducting material for thin film solar photovoltaics. Thin films of CFTS were deposited on soda lime glass substrates at different temperatures, and their structural, morphological, optical, and electrical properties were studied. The deposition temperature affected the band gap values, and the film deposited at 375 degrees C exhibited better electrical properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Qais M. Al-Bataineh, Ihsan A. Aljarrah, Ahmad A. Ahmad, Ahmad M. Alsaad, Ahmad Telfah
Summary: The physicochemical properties, doping mechanism, and electron transition bands of PEO/KMnO4 were investigated, revealing that the introduction of KMnO4 led to a decrease in crystallinity degree and optical bandgap energy, the creation of new energy levels, electronic transition bands, and a blocking of light.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Nanthakishore Makeswaran, Cristian Orozco, Anil K. Battu, Eva Deemer, C. V. Ramana
Summary: This study focused on the nanoscale structure, phase, and electronic properties of nanocrystalline Mo films with variable microstructure and grain size. The results showed that the deposition temperature and grain size significantly affected the hardness, elastic modulus, plasticity index, wear resistance index, optical properties, and electrical conductivity of the Mo films.
Article
Materials Science, Multidisciplinary
Jinjin Wang, Xueqiang Ji, Song Qi, Zhitong Li, Zuyong Yan, Mengcheng Li, Xu Yan, Aoxue Zhong, Chao Lu, Xiaohui Qi, Peigang Li
Summary: In Ga2O3-based solar-blind photodetectors, the concentration of native oxygen vacancies (V-O) in Ga2O3 films is decreased through a nitrogen-doping method, leading to improved photoelectrical performance of the devices.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Jose de Jesus Araiza, Leo Alvarez-Fraga, Raul Gago, Olga Sanchez
Summary: Hafnium oxide films were deposited on sapphire and silicon (100) substrates using the DC reactive magnetron sputtering technique from a pure hafnium target at different discharge power levels. The influence of the cathode power on the composition, structure, morphology, and optical properties of the films was investigated. The results showed that the films had increased crystalline content and oxygen-rich composition with higher sputtering power, and exhibited mound morphologies on the surface.
Article
Optics
M. S. Aida, M. Sh Abdel-wahab, Ahmed H. Hammad
Summary: Zinc oxide thin films containing samarium were prepared by RF sputtering, with the presence of Sm leading to a decrease in crystalline nature and improved surface roughness. The absorption edge of the samples shifted to higher photon energy with increasing Sm content. The study discussed linear and non-linear optical parameters and photoluminescence in relation to Sm content.