Article
Materials Science, Multidisciplinary
Fuyuan Liang, Jiaran Yang, Haiqing Wang, Junwei Wu
Summary: Physical vapor deposition (PVD) is a suitable method for producing high-quality Gd2O3-doped CeO2 (GDC) films, with reactive sputtering being a preferred method due to its high deposition rates and scalability for industrial applications. GDC thin films were successfully fabricated through reactive sputtering and evaluated for their application in solid oxide fuel cells. The results showed that reactive sputtering can produce thin and dense GDC buffer layers without the need for high-temperature sintering, leading to improved electrochemical performance compared to screen-printed buffer layers. Furthermore, the inclusion of GDC sublayers in the steel/coating system reduced the oxidation rate for SUS441 at operating temperatures.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2023)
Article
Chemistry, Physical
Jeong Woo Shin, Seongkook Oh, Sungje Lee, Dohyun Go, Joonsuk Park, Hyong June Kim, Byung Chan Yang, Gu Young Cho, Jihwan An
Summary: Surface modification of electrodes is crucial for improving the performance of low-temperature solid oxide fuel cells. The ALD CeO2-coated Pt anode structure showed a significant improvement in anode kinetics, leading to a decrease in activation resistance and an increase in maximum power density.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Iheke Micheal Nwachukwu, Assumpta Chinwe Nwanya, Rose Osuji, Fabian I. Ezema
Summary: Cerium oxides with variable oxidation states and high interfacial charge transfer rate are potential pseudocapacitive materials. Doping with Mn can improve the electrochemical performance of ceria films and increase the specific capacitance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Xiao-Dong Zhang, Maxim Varenik, Konstantin Zvezdin, David Ehre, Ellen Wachtel, Zengwei Zhu, Gregory Leitus, Alexander Popov, Anatoly Zvezdin, Tao Peng, Igor Lubomirsky, Xin Guo
Summary: Ceria and its solid solutions with Gd2O3 are important materials with interesting properties and various applications. However, the understanding of ceria's magnetic properties and magnetoelastic coupling is still limited. In this study, forced magnetostriction in Gd2O3-CeO2 solid solution ceramics is characterized, revealing a linear relationship between strain and Gd3+ concentration. The observed strain is attributed to the single-ion magnetostrictive response of Gd3+ to crystal field.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Hans F. Wardenga, Katharina N. S. Schuldt, Stephan Waldow, Roger A. De Souza, Andreas Klein
Summary: The study investigated the influence of different doping methods, concentrations, and surface orientations on the surface Fermi level positions, ionisation potentials, and work functions of CeO2. It was found that the ionisation potentials are significantly affected by doping and oxygen activity, while the work functions are largely unaffected. In terms of oxygen surface exchange coefficients, similar magnitudes were observed under different conditions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Jie Kang, Wenqiang Feng, Dong Guo, Kai Chen, Shoushan Gao, Junru Jiang, Chunling Lu, Bingbing Niu, Biao Wang
Summary: The study prepared Ca and Y co-doped Ce0.8Y0.2-xCaxO2-delta electrolytes and evaluated their performance in intermediate-temperature solid oxide fuel cells. The co-doped electrolyte exhibited high conductivity and reduced blocking factor, indicating superior performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Ph Nonglen Meitei, Naorem Khelchand Singh
Summary: Oxide-based resistive switching devices have potential applications in non-volatile memory. In this study, a Gd2O3-based non-volatile memory device was fabricated using e-beam evaporation. The effect of annealing on device performance was investigated by annealing the as-grown sample at 500 degrees C. Capacitance-voltage and conductance-voltage measurements were conducted in the frequency range of 200 kHz to 1 MHz. The results showed that the C-V and G-V characteristics varied with frequency due to the presence of interface states. The effects of series resistance and interface state density were also analyzed for both devices. Resistive switching was observed at +/- 5 V, indicating bipolar behavior with different charge conduction mechanisms.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
Inti Zumeta-Dube, Jose Manuel Garcia Rangel, Jorge Roque, Issis Claudette Romero-Ibarra, Mario Fidel Garcia Sanchez
Summary: The study demonstrates that ultrasonic spray pyrolysis technique can be used to obtain textured CeO2 films on glass substrates, and evaluates the factors influencing the texture and morphology characteristics of the films.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
R. Siva Prakash, C. Mahendran, J. Chandrasekaran, R. Marnadu, S. Maruthamuthu, I. S. Yahia, Mohd Shkir
Summary: Rare-earth materials have sparked interest in semiconductor device technology, particularly in the fabrication of p-n photodiodes. This study focused on the fabrication of pure and Sn-doped CeO2 thin films using spray pyrolysis to enhance diode performance. The presence of Sn ions was found to improve electrical conductivity and optical absorption of the films, resulting in enhanced photosensitivity and improved ON-OFF photoresponse in p-Si/n-Sn:CeO2 diodes.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Chemistry, Physical
Veena Singh, Lyubov Belova
Summary: We fabricated and characterized solution-route CeO2 thin films with tunable porosity and microstructure using inkjet printing technique. The films were deposited with different concentration inks and printing temperatures, resulting in varying thickness and microstructures. XRD characterization confirmed the formation of cubic fluorite structure in the printed films. This technique offers an advanced method for high-quality film fabrication with controlled microstructure and minimal waste of materials.
Article
Engineering, Chemical
Wenxuan Li, Xingxing Li, Chen Wang, Yansheng Gong, Rui Wang, Huanwen Wang, Jun Jin, Ling Zhao, Beibei He
Summary: Reasonable design of perovskite electrodes via surface engineering is an attractive strategy for advanced symmetrical solid oxide fuel cells (S-SOFCs) to achieve high activity and good durability. This study demonstrates that decorating PrBaMn0.5Fe1.5O5+delta perovskite with uniformly distributed iron doped CeO2 nanoparticles using atomic layer deposition (ALD) enhances both oxygen reduction and fuel oxidation kinetics, resulting in high electrochemical performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Yu. A. Kuznetsova, A. F. Zatsepin, N. V. Gavrilov
Summary: Gadolinium oxide thin films were synthesized on a silica glass substrate using magnetron sputtering technique, exhibiting high uniformity and refractive index. This opens up new possibilities for creating effective antireflection coatings and components of planar waveguides.
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
Yueming Xing, Muhammad Akbar, Muhammad Yousaf, M. A. K. Yousaf Shah, Chen Xia, Jie Gao, Xunying Wang
Summary: The study revealed that CeO2-coated NaFeO2 as an electrolyte material for low-temperature solid oxide fuel cells has significantly higher ionic conductivity, leading to improved power output of the fuel cells.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Fang-Hsing Wang, Mao-Shan Chen, Yeu-Long Jiang, Han-Wen Liu, Tsung-Kuei Kang
Summary: The influence of substrate temperature on the properties of Mg and F co-doped ZnO thin films was investigated, revealing that higher substrate temperatures can improve crystallinity and optoelectronic properties. This makes MFZO films a preferred transparent conductor for optoelectronic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)