Article
Materials Science, Multidisciplinary
Ramesh Ade, V Ganesh, Yugandhar Bitla, Y. Vijaya Kumar
Summary: This article investigates the impact of praseodymium (Pr) on the optoelectronic properties of spray pyrolyzed NiO thin films. The results show that Pr doping can enhance the sensing and detection properties of the photo-devices, making them potential candidates for optoelectronic applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Engineering, Electrical & Electronic
Durmus Ali Aldemir, Ahmet Bugrahan Bayram, Murat Kaleli
Summary: The In2O3, Yb2O3, and (In, Yb)(2)O-3 thin films were prepared using the ultrasonic spray pyrolysis method. The structural and electro-optical properties of (In, Yb)(2)O-3 thin films were compared with those of In2O3 and Yb2O3 thin films. It was found that (In, Yb)(2)O-3 had a cubic bixbyite crystal structure with a lattice constant of 1.030 nm. The (In, Yb)(2)O-3 material was identified as a direct ultra-wide bandgap semiconductor with a value of 4.11 eV.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Dominika Rajska, Agnieszka Brzozka, Marianna Marciszko-Wiackowska, Mateusz M. Marzec, Damian Chlebda, Katarzyna E. Hnida-Gut, Grzegorz D. Sulka
Summary: This study developed an electrochemical synthesis method for Te-doped InSb thin films, optimized the electrodeposition parameters, and discussed the effects of doping on the material properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Saheer Cheemadan, M. C. Santhosh Kumar
Summary: This study deposited CdO:ZnO composite thin films with varying compositions on glass substrates using RF magnetron sputtering. The optoelectronic characteristics of the films and their dependence on substrate temperature were investigated. The structural, electrical, morphological, and optical properties of the films were analyzed using various techniques. The results showed that all films had an average optical transmittance above 80% in the visible range, regardless of the deposition temperature and composition. The CdO:ZnO (70:30) composite thin films deposited at 200℃ exhibited the lowest electrical resistivity and a high carrier concentration. Increasing the substrate temperature from room temperature to 200℃ resulted in an increase in carrier mobility. The energy band gap values of the films were calculated based on the transmittance spectra.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Natalia Herguedas, Enrique Carretero
Summary: SiOx thin films were prepared on a silicon substrate using magnetron sputtering and characterized using Fourier transform infrared spectroscopy. The results demonstrate the significance of selecting an appropriate range of O2 flow rates in modifying the stoichiometry and refractive index values of SiOx in the mid-infrared range.
Article
Materials Science, Multidisciplinary
Binbin Xin, Arnaud Le Febvrier, Lei Wang, Niclas Solin, Biplab Paul, Per Eklund
Summary: Highly pure CaxCoO2 thin films were successfully obtained through annealing multilayers, with excellent optical properties and the possibility to increase electrical conductivity by introducing a secondary phase. This study provides a new method for the preparation of solid-state oxide thin films.
MATERIALS & DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Nisha, Palash Kumar Basu
Summary: A novel method of sodium-ion detection from aqueous solutions based on a change of optical transmittance is proposed. Tungsten oxide-coated indium tin oxide (ITO) samples for selective sodium-ion detection are prepared from varying concentrations of peroxo tungstic oxide precursors using a simple cathodic electrodeposition method. The sensor exhibits good selectivity toward N+ compared to K+ and Ca2+ ions and linear response in the range of 10-150 mM Na+. Simple construction, higher response, and selectivity make it a promising method for sodium sensing in food industries and health monitoring.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
J. Vivekanandan, K. S. Usha, R. Sivakumar, C. Sanjeeviraja
Summary: In this study, mixed nickel-tungsten oxide thin films with different tungsten oxide concentrations were deposited using the RF sputtering technique. The properties of the films, such as transmittance, energy bandgap, and refractive index, were found to change with the concentration of tungsten oxide. The films also exhibited good characteristics for electrochromic and optoelectronic device fabrications.
Article
Chemistry, Physical
Hugh Littlehailes, William R. Hendren, Robert M. Bowman, Fumin Huang
Summary: The optical properties of intermetallic Au3Hf thin films were experimentally investigated and found to exhibit significant plasmonic characteristics. Compared to similar alloys, Au3Hf films demonstrated more negative epsilon' values and lower epsilon'' values across most of the tested wavelengths. The study also identified key conditions for isolating the pure Au3Hf phase.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Kouame Boko Joel-Igor N'Djore, Moussa Grafoute, Younes Makoudi, Wael Hourani, Christophe Rousselot
Summary: In this study, reactive magnetron sputtering was used to deposit tungsten oxide films on glass and silicon substrates. The Capacitance meter method was proposed to study the electrical properties of resistive WOx films, and a correlation between the deposition process and WOx physico-chemical properties was established. The films were divided into four zones based on the hysteresis of the W-Ar-O-2 system, and the identification of these zones was confirmed by various film properties. The capacitance-voltage curves of the metal-oxide-semiconductor structures showed a gradual evolution with increasing oxygen flow rate, and the ion density and flat band voltage had an inverse relationship with the oxygen flow rate. The Terman method was used to study the WOx-Si interface trap density distribution.
Article
Engineering, Electrical & Electronic
Khaoula Derrar, Mourad Zaabat, Nouhad Rouabah, Roshan Nazir, Faouzi Hanini, Abdelkader Hafdallah, Sher Afghan Khan, Norah Salem Alsaiari, Khadijah Mohammedsaleh Katubi, Khamael M. Abualnaja
Summary: The present study investigates the influence of pure and antimony-doped tin oxide thin films on their structural, optical, and electrical properties. It is found that the size and surface morphology of the doped films are affected by the dopant concentration, while the electrical properties depend on the dopant concentration.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
B. Salameh, A. M. Alsmadi, Ahmed R. Hegazy
Summary: The structural, chemical, surface morphology, and optoelectronic characteristics of Al-doped SnO2 (ATO) films were investigated in this study. The results revealed the mechanisms of Al incorporation and their effects on the carrier concentration, crystallite size, and oxygen vacancy defects. Furthermore, the positions of defect states within the bandgap and the optical transitions were determined through photoluminescence and optical absorption measurements.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
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.
Article
Engineering, Electrical & Electronic
Ph Nonglen Meitei, Borish Moirangthem, Chitralekha Ngangbam, Mir Waqas Alam, Naorem Khelchand Singh
Summary: In this study, gadolinium oxide thin films were successfully deposited on a silicon substrate using electron beam evaporation technique, and the films were polycrystalline with a cubic crystal system after annealing at different temperatures. The annealed films showed improved electrical performance and fast switching response, making them suitable for photodetector applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Martin Markwitz, Peter P. Murmu, Song Yi Back, Takao Mori, Ben J. Ruck, John Kennedy
Summary: This study reports the impact of tellurium (Te) doping in CuI films prepared by ion beam sputtering and their optical, electrical, and thermoelectric properties. It is found that elemental tellurium clusters exist in films prepared with high Te concentration sputtering targets. With increasing Te concentration, the carrier mobility and electrical conductivity decrease from 6.9 ± 0.9 cm2V-1s-1 to 0.7 ± 0.1 cm2V-1s-1 and from 84.22 ± 8.45 Scm-1 to 3.97 ± 0.40 Scm-1, respectively. The study shows that modulating the scattering mechanism in transparent thermoelectric materials is an effective method to control their thermoelectric properties.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Emanuela Filippo, Marco Tepore, Francesca Baldassarre, Tiziana Siciliano, Goacchino Micocci, Gianluca Quarta, Lucio Calcagnile, Antonio Tepore
APPLIED SURFACE SCIENCE
(2015)
Article
Chemistry, Physical
E. Filippo, T. Siciliano, A. Genga, G. Micocci, M. Siciliano, M. Tepore
APPLIED SURFACE SCIENCE
(2013)
Article
Chemistry, Physical
E. Filippo, A. Serra, A. Buccolieri, D. Manno
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2013)
Article
Chemistry, Physical
Emanuela Filippo, Daniela Manno, Antonio Serra
JOURNAL OF ALLOYS AND COMPOUNDS
(2012)
Article
Materials Science, Multidisciplinary
Emanuela Filippo, Maria Siciliano, Alessandra Genga, Gioacchino Micocci, Antonio Tepore, Tiziana Siciliano
MATERIALS RESEARCH BULLETIN
(2013)
Article
Nanoscience & Nanotechnology
Filippo Emanuela, Tepore Marco, Siciliano Tiziana, Chirizzi Daniela, Malitesta Cosimo, Guascito Maria Rachele
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2014)
Article
Chemistry, Analytical
Cosimino Malitesta, M. Rachele Guascito, Elisabetta Mazzotta, Tiziana Siciliano, Antonio Tepore
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
Article
Chemistry, Analytical
E. Filippo, D. Manno, A. Buccolieri, A. Serra
SENSORS AND ACTUATORS B-CHEMICAL
(2013)
Article
Chemistry, Analytical
T. Siciliano, A. Genga, G. Micocci, M. Siciliano, M. Tepore, A. Tepore
SENSORS AND ACTUATORS B-CHEMICAL
(2014)
Article
Chemistry, Analytical
Maria Rachele Guascito, Daniela Chirizzi, Cosimino Malitesta, Tiziana Siciliano, Antonio Tepore
Article
Materials Science, Multidisciplinary
T. Siciliano, M. Tepore, A. Genga, G. Micocci, M. Siciliano, A. Tepore
Proceedings Paper
Engineering, Electrical & Electronic
S. Rella, C. Malitesta, E. Mazzotta, A. Turco, T. Siciliano, A. Tepore
Article
Materials Science, Multidisciplinary
Ping Zhang, Xiujie Yue, Yeran Gao, Zhenyong Lin, Shunxiang Wang, Songting Zhang
Summary: This paper investigates the strengthening mechanism of highspeed cutting and solid particle-entrained waterjet peening (HSC-WJP) composite reinforcement on 7075-T6 aluminum alloy. The research results show that composite reinforcement can improve surface quality, reduce surface pits and roughness, and decrease the size of precipitation-free zone (PFZ) at grain boundaries.
Article
Materials Science, Multidisciplinary
Sangyoon Lee, Hwi Yoon, Sanghun Lee, Seung-min Chung, Hyungjun Kim
Summary: The wettability of metal oxides, particularly HfO2 thin films deposited via atomic layer deposition, and its correlation with surface free energy have been studied. It was found that surface oxygen species significantly affect the intrinsic hydrophilicity of HfO2 thin films, and the crystalline orientations also evolve with film thickness.
Article
Materials Science, Multidisciplinary
Changdong Yin, Yiwen Wu, Zhou Xu, Dongdong Ye, Jun Yao, Jianjun Chen, Qiang Liu, Xin Ge, Meiling Ding
Summary: This study proposed a new strategy to indirectly estimate the hydrogen diffusivity of metallic materials under tensile stress by combining the electrochemical hydrogen permeation test (EHPT), the hydrogen diffusion descriptive equation based on Fick's law, and hydrogen pre-charged tensile test. The results showed that the hydrogen permeation curve obtained was highly approximate to the theoretical trend. The hydrogen embrittlement (HE) susceptibility of the specimens increased with increasing stress.
Article
Materials Science, Multidisciplinary
Huan Luo, Wei-yi Wang, Xin Yu, Xian-jun Lei, Lang Liu, Guo-zheng Zha, Wen-long Jiang, Bin Yang, Bao-qiang Xu
Summary: Separating selenium and tellurium is a general challenge in material and non-ferrous metallurgical industries. This paper proposes a novel method that achieved efficient separation of selenium and tellurium using gas-liquid equilibrium phase diagram and valence regulation-vacuum gasification technique.
Article
Materials Science, Multidisciplinary
Fan Zhang, Rong Xin Wang, Aiqin Tian, Fangzhi Li, Jianping Liu, Hui Yang
Summary: Deposition of Pd/Pt/Au three-layer films on p-GaN under high and ultra-high vacuum conditions was studied to investigate the electrical contact properties. Linear I-V curves were observed in samples deposited under ultra-high vacuum conditions, while nonlinear I-V characteristics were obtained in samples deposited under high vacuum conditions. The study also found that the samples deposited under high vacuum conditions had higher amounts of oxygen and Pd oxide. The oxide layer had an additional influence on the electrical characteristics of the Pd/Pt/Au/p-GaN contact.
Article
Materials Science, Multidisciplinary
Hongli Liu, Chengzhe Liu, Ying Sui, Zhongxian Liu, Tiangang Zhang, Zhiqiang Zhang, Shuang Sun, Jianwei Jia
Summary: This study utilized polysiloxane and hafnium carbide to produce Si-N-C-O-Hf hybridized ceramic fibers, and obtained ceramic fibers with hemispherical particles on the surface through electrostatic spinning and pyrolysis. The ceramic fibers exhibited excellent thermal stability, oxidation resistance, and high temperature insulation.
Article
Materials Science, Multidisciplinary
M. Abaker, Nazar Elamin Ahmed, A. Saad, H. F. Khalil, E. M. M. Ibrahim, A. M. Adam
Summary: This paper systematically studied the internal structure and thermoelectric properties of In1-xGaxSb alloys prepared by melting synthesis at 1123 K. The results showed that doping with Ga in the In sites led to a significant increase in the Seebeck coefficient and power factor, while reducing the thermal conductivity. The maximum dimensionless figure of merit was observed at 403 K.
Article
Materials Science, Multidisciplinary
Fucheng Yu, Jinlong Ren, Jielin Zhang, Haiyang Chen, Xin Tian, Chenchen Feng, Cuixia Li, Jianbin Zhang, Xianxi Tang, Xiaogang Hou
Summary: An environmentally friendly ZnO@BiVO4 composite photocatalyst was prepared using in-situ self-assembly and solvothermal methods, demonstrating good photocatalytic performance. The mass ratio of BiVO4 and NCZ was found to influence the photocatalytic performance of the composite.
Article
Materials Science, Multidisciplinary
Yaoming Shao, Pingping Zheng, Tianhao Dong, Lianghuan Wei, Haifei Wu, Jianxiao Si
Summary: In this paper, Mg3Bi2 films were prepared on glass substrate using magnetron sputtering, and the phase composition and thermoelectric properties of the films were investigated with different atomic ratios. The films displayed a metastable cubic phase and high conductivity when the atomic ratio exceeded stoichiometry.
Article
Materials Science, Multidisciplinary
I. V. Uimanov, D. L. Shmelev, S. A. Barengolts
Summary: A two-dimensional axisymmetric model has been developed to study the prebreakdown processes in a cathode microprotrusion under an external electric field. The simulation results show that electrohydrodynamic instability leads to the formation of a nanometer-sized conical protrusion on the microprotrusion tip, significantly accelerating the heating process.
Article
Materials Science, Multidisciplinary
Weilun Zhang, Di Yang, Feng Gong, Yongjun Chen, Tian Chen, Zhiwen Xie, Sirui Yang
Summary: A novel Pt doping method was designed to improve the thermal stability of CrWN coating. The doping of Pt atoms effectively blocks the coherent growth of the grains and creates a significant mixing effect, resulting in a smooth surface with uniform element distribution.
Article
Materials Science, Multidisciplinary
Xiaoye Wang, Xiaoguang Yang, Wenna Du, Tao Yang
Summary: In this study, the effects of multiple growth parameters on self-catalyzed growth of InAs/GaSb axial heterostructured nanowires on Si substrate by MOCVD were investigated. It was found that the growth temperature and switching time have significant influences on the nanowire growth.
Article
Materials Science, Multidisciplinary
Weizhong Cui, Yan Zhao, Can Cui, Xing Liu, Beili Pang, Jianguang Feng, Hongzhou Dong, Liyan Yu, Lifeng Dong
Summary: This study introduces Co2+ cations into Cs2AgBiBr6 film to improve its quality, grain size, and conductivity, resulting in enhanced solar cell efficiency.
Article
Materials Science, Multidisciplinary
Jian Wang, Ke Yang, Xianming Cheng, Yalin Lu, Ganghui Wu, Yang Zhang, Yun Kan
Summary: The corrosion behavior and microstructural evolution of Sc microalloyed Al-3.2Cu-1.5Li alloys were investigated in detail. The microstructural results showed higher levels of dislocations density in the Sc microalloyed sample, which resulted in significantly refined grains and T1 precipitates. Microalloying with Sc changed the corrosion mode of the alloy and localized corrosion was found to occur preferentially at the subgrain within unrecrystallized grains with high grain stored energy.
Article
Materials Science, Multidisciplinary
Weifeng Liu, Na Liu, Kaiqiang Song, Meiqin Zeng, Zhongchen Lu
Summary: Monoclinic WO3 prepared through plasma milling exhibits higher photocatalytic activity due to its higher surface area, increased oxygen vacancies, and defects.