Article
Engineering, Electrical & Electronic
Mehmet Ali, Ozlem Duyar Coskun
Summary: Electrochromic materials offer sustainable and innovative solutions for EC devices, smart windows, and optoelectronic applications. By applying voltage, the optical transmissions of these materials can be modulated. Achieving high optical modulation and coloration efficiency is crucial for EC devices on solid and flexible substrates. This study investigates the effects of deposition pressure on the structural, optical, and electrochromic properties of WO3 films deposited on flexible PET substrates. The results show that increasing the deposition pressure improves the coloration efficiency of the WO3 films, and there is an optimal oxygen to argon partial pressure ratio for improved EC properties.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Physics, Condensed Matter
Huizhong Ma, Yunlong Chen, Na Li, Cong Tan, Yan Rong, Hongye Chen, Jia Jia, Lan Zhang
Summary: In this study, WO3 films were prepared on flexible indium tin oxide/polyethylene terephthalate substrates through DC magnetron sputtering at approximately 40 degrees C, and the effects of sputtering pressure on the microstructure, morphology, and electrochromic properties of the films were investigated. The results showed that the optimal values of thickness, surface roughness, and grain size for excellent electrochromic properties of the WO3 films were achieved at 2.0 Pa sputtering pressure. The films exhibited high optical modulation amplitude, fast coloring and bleaching response times, and low electrochemical impedance.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Chemistry, Physical
Micha Mazur, Damian Wojcieszak, Artur Wiatrowski, Danuta Kaczmarek, Aneta Lubanska, Jaros law Domaradzki, Piotr Mazur, Ma lgorzata Kalisz
Summary: This paper analyzed the properties of tungsten oxide thin films prepared using the magnetron sputtering method. Changes in the Ar:O-2 gas mixture ratios were found to influence the structural, optical, and electrical properties of the deposited coatings significantly. The results suggest that controlling the gas atmosphere during sputtering can tailor the optoelectronic properties of tungsten oxide thin films, offering potential applications in transparent electronics.
APPLIED SURFACE SCIENCE
(2021)
Article
Electrochemistry
Haonan Li, Yuechan Li, Xiuxiu Li, An Xie, Dongya Sun, Yi Wang
Summary: This paper investigated the microstructure and electrochromic properties of nickel oxide films deposited on ITO-coated glass substrates at different sputtering pressures, finding that the films showed the best surface morphology and outstanding electrochromic performances at 2.4 Pa.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Zhen-Dong Wang, Zhen-Quan Lai
Summary: A single (200)-oriented TiN thin film was successfully deposited on a quartz substrate by DC magnetron reactive sputtering process, and the effects of sputtering pressure and substrate temperature on the properties of the film were studied. The results showed that a single (200)-oriented TiN thin film with increased grain size can be obtained over a wide range of substrate temperatures. The film exhibited low resistivity and high optical reflectance.
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
Chemistry, Physical
Ewa Mankowska, Michal Mazur, Malgorzata Kalisz, Marcin Grobelny, Jaroslaw Domaradzki, Damian Wojcieszak
Summary: This study presents a comprehensive comparison of the mechanical properties of HfO2 thin films deposited using different conditions of reactive magnetron sputtering. The transparent HfO2 thin films deposited in the continuous process exhibit superior corrosion resistance and the highest values of Young's modulus and scratch resistance, potentially indicating a new application as a corrosion protective material.
Article
Chemistry, Physical
Rafal Psiuk, Michal Milczarek, Piotr Jenczyk, Piotr Denis, Dariusz M. Jarzabek, Piotr Bazarnik, Marcin Pisarek, Tomasz Moscicki
Summary: Novel W-Zr-B coatings were developed by a hybrid process, and the influence of laser power density on the structure and mechanical properties of the deposited films was studied. Addition of zirconium changed the structure of the films from columnar to amorphous.
APPLIED SURFACE SCIENCE
(2021)
Article
Physics, Multidisciplinary
Cristian L. Teran, Jorge A. Calderon, Heiddy P. Quiroz, A. Dussan
Summary: This study investigates the resistive switching behavior of ZnO thin films deposited via DC magnetron sputtering. The research explores the structural and optical properties of the films, as well as the changes in transport mechanism due to high defect concentration in the samples. The correlation between synthesis parameters, structural characterization, and shape of bipolar switching effect is analyzed, providing insights into the fabrication and control of resistive random access memories.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
K. B. Joel-Igor N'Djore, M. Grafoute, A. Bulou, C. Rousselot
Summary: Tungsten oxide thin films were grown on different substrates using direct current magnetron sputtering. By varying the oxygen flow rate, a series of amorphous WOx films with different stoichiometry and porosity were obtained. The study aimed to determine the optimal electrochromic performances of WOx by studying the correlation between physical properties and electrochromic performances. The films' optical transmittance increased from opaque to transparent with an increase in oxygen flow rate. The films' refractive index decreased and porosity increased with an increase in total pressure induced by oxygen flow rate.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Md Suruz Mian, Riko Yagi, Kei Oya, Takeo Nakano
Summary: Amorphous tungsten oxide films were prepared and investigated for their electrochromic properties. It was found that the transmittance and recoverability in colored state of the films were closely related to deposition conditions and film thickness. Films with 500 nm thickness had transmittance of 4-8% in colored state and good recoverability, while 1000 nm thick films had very low transmittance and incomplete recovery in bleached state.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Yong Jun Park, Kwang-Mo Kang, Ji Ho Kang, Deokyeon Lee, Sung Hun Na, Seung Ho Han, Yoon-Chae Nah, Dong Hun Kim
Summary: This study investigated the structure, morphology, and electrochromic properties of sputtered-WO3 thin films using ceramic and metallic targets. The films were grown using different power sources and exhibited different performance. The films produced by sputtering the ceramic target with pulsed DC power showed the highest transmittance difference and coloration efficiency, as well as better response speed and stability.
Article
Materials Science, Ceramics
Chao Yang, Rong Wang, Bailing Jiang, Juan Hao
Summary: The study found that in dual pulse power magnetron sputtering, adjusting the target power ratio can change the removal mode of the titanium target material, improve the deposition rate and properties of the TiN film, and increase its hardness to 25.4 GPa.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Sihui Wang, Wei Wei, Yonghao Gao, Haibin Pan, Yong Wang
Summary: Ternary Ti-Zr-V getter films were deposited on copper substrates using DC and unipolar pulsed DC current modes. The DC film exhibited a finer microstructure and faster reduction kinetics of oxides compared to the unipolar pulsed DC film.
Article
Chemistry, Multidisciplinary
Ana Luiza A. Faria, Higor A. Centurion, Juliana A. Torres, Renato Goncalves, Lucas S. Ribeiro, Caue Riberio, Jean C. da Cruz, Francisco G. E. Nogueira
Summary: Depositing a small loading of Cu nanoparticles on niobium oxide surface enhances its photocatalytic activity and improves CO2 reduction reactions.
JOURNAL OF CO2 UTILIZATION
(2021)
