Article
Chemistry, Multidisciplinary
Yaqiong Wang, Matyas Daboczi, Man Zhang, Joe Briscoe, Ji-Seon Kim, Haixue Yan, Steve Dunn
Summary: We report the external bias driven switchable photocurrent in 2.3 eV indirect band gap perovskite (BiFeO3) photoactive thin films. By studying the band structure of BiFeO3, we found that the application of external bias can control the n-type or p-type behavior of the films, and demonstrate its applications in novel optoelectronic switches, logic, and energy conversion devices.
MATERIALS HORIZONS
(2023)
Article
Crystallography
Zhe Wang, Jinyan Zhao, Wei Ren
Summary: This work investigates the influence of annealing conditions on the crystalline structure, morphology, and electrical performance of BNT-5.5BZ thin films. The results show that the post-annealing treatment in an O-2 atmosphere can significantly enhance the strain response and reduce the dielectric loss of the films. This research provides new insights into improving the electrical properties of BNT-based films.
Article
Polymer Science
Qais M. Al-Bataineh, A. A. Ahmad, A. M. Alsaad, I. A. Qattan, Ihsan A. Aljarrah, Ahmad D. Telfah
Summary: Incorporating an iodine filler into PEO-BDK-MR thin films enhances the isomerization energy barrier and significantly increases the processing time, making them potential candidates for applications involving molecular solar thermal energy storage media.
Article
Chemistry, Physical
Jiaqi Ding, Ruiqi Guo, Jingcong Hu, Guoqiang Xi, Yue Lu, Jianjun Tian, Linxing Zhang
Summary: This study demonstrates the use of chemical regulation to improve the ferroelectric photovoltaic properties by reducing the bandgap and enhancing lattice distortion. Cobalt substitution is used to introduce chemical strain and enhance the tetragonality of the epitaxial films. The research reveals the potential application of chemical-strain-modulated epitaxial films in optoelectronics and information storage.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Zhe Wang, Jinyan Zhao, Gang Niu, Wei Ren, Nan Zhang, Kun Zheng, Yi Quan, Lingyan Wang, Jian Zhuang, Henghui Cai, Xin Li, Genshui Wang, Ming Liu, Zhuangde Jiang, Yulong Zhao
Summary: Lead-free bismuth sodium titanite (Bi0.5Na0.5)TiO3-based piezoelectric thin films, specifically (1 - x)(Bi0.5Na0.5)TiO3-xBaZrO(3) (x = 0.02, 0.04, 0.06 and 0.07, BNT-100xBZ) were successfully fabricated using the sol-gel method. The influence of the BZ contents on the dielectric and piezoelectric properties of the thin films was investigated. The results showed that the BNT-4BZ thin films exhibited a giant macro-scale strain value and a relatively lower dielectric loss, along with a coexistence of ferroelectric phase and relaxor characteristics. These findings are of great significance for improving the strain response and reducing the dielectric loss in lead-free thin films for various piezoelectric device applications.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Physics, Applied
Imran Sutan Chairul, Atsushi Echimoto, Ryutaro Tazawa, Kei-ichiro Murai, Toshihiro Moriga
Summary: Transparent diodes were fabricated by layering a Ga-Sn-O (GTO) film onto an In2O3:Sn (ITO) film using a facing-targeted DC sputtering method. When a GTO film containing about 25% gallium was deposited on the surface of the conductive ITO film at room temperature, a bilayer film was obtained. The rectification characteristics of the bilayer film were approximately 0 and 3.8 μA/V for negative and positive voltages, respectively, but increased up to 68.3 μA/V in the positive voltage applied region after annealing at 200℃.
MODERN PHYSICS LETTERS B
(2023)
Article
Physics, Multidisciplinary
Yasen Hou, Fabrizio Nichele, Hang Chi, Alessandro Lodesani, Yingying Wu, Markus F. Ritter, Daniel Z. Haxell, Margarita Davydova, Stefan Ilic, Ourania Glezakou-Elbert, Amith Varambally, Sebastian Bergeret, Akashdeep Kamra, Liang Fu, Patrick A. Lee, Jagadeesh S. Moodera
Summary: The macroscopic coherence in superconductors allows for dissipationless supercurrents, which can have significant implications in emerging quantum technologies. By implementing unequal supercurrents in the forward and backward directions, the superconducting diode effect can be achieved, enabling unprecedented functionalities. Through experiments and theoretical modeling, we demonstrate the strong superconducting diode effect in conventional superconducting thin films, as well as its enhancement when interfacing with a ferromagnetic semiconductor.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Applied
N. Satchell, P. M. Shepley, M. C. Rosamond, G. Burnell
Summary: We demonstrate the nonreciprocal critical current in Nb thin films and explain the supercurrent diode effect in the tracks. The diode effect varies with temperature and magnetic field, and depends on the width of the Nb tracks. The supercurrent diode is proposed to become a ubiquitous component of the superconducting computer.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Julian Parra-Barranco, Carmen Lopez-Santos, Juan R. Sanchez-Valencia, Ana Borras, Agustin R. Gonzalez-Elipe, Angel Barranco
Summary: This study demonstrates that by coating PDMS elastomers with nanostructured TiO2 films and subjecting them to mechanical deformation, surfaces can exhibit self-patterning with well-ordered micro-scaled grooves. These patterned surfaces can be reversibly modified by mechanical deformation, allowing for switchable and reversible wetting effects and liquid droplet sliding.
Article
Physics, Applied
Xueqiang Ji, Xiaohui Qi, Jianying Yue, JinJin Wang, Zuyong Yan, Shan Li, Zeng Liu, Weihua Tang, Peigang Li
Summary: A nonthermal N plasma-based treatment is proposed to obtain a doped surface on ss-Ga2O3 films, which enhances the luminescence effect related to acceptor defects. The surface conductive properties are enhanced by the defect compensation of oxygen vacancy (VO) donor defects. Detailed investigations into the surface defect compensation of N-doped Ga2O3 thin films have great research potential for device applications.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
T. Gnanasekar, S. Valanarasu, Himadri Tanaya Das, N. Chidhambaram, R. S. Rimal Isaac, Abdullah M. Al-Enizi, Mohd Ubaidullah, Vasudeva Reddy Minnam Reddy
Summary: This study improves the performance of CuO thin films by doping with different metals, and successfully prepares doped CuO thin films. The Al-doped CuO thin film exhibits the highest photocurrent and a reduced bandgap, showing good photosensing activity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
P. Ashok, Yogesh Singh Chauhan, Amit Verma
Summary: This work demonstrates reflectance resonances in highly subwavelength partially oxidized Vanadium thin films in the near-infrared and long-wave infrared wavelengths. The observed resonances can be switched into a high-reflectance state with temperature and can be passively tuned by adjusting the oxidation duration.
Article
Chemistry, Multidisciplinary
Dashui Zhang, Junxin Wang, Zhangfa Tong, Hongbing Ji, Hui-Ying Qu
Summary: The study demonstrates that the adaptive lamellar PANI/PS-b-P2VP thin film offers a wide range of color control, switchable vivid coloration, and excellent durability, making it an ideal multicolored electrochromic platform.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Physics, Applied
Yiwen Song, Chi Zhang, James Spencer Lundh, Hsien-Lien Huang, Yue Zheng, Yingying Zhang, Mingyo Park, Timothy Mirabito, Rossiny Beaucejour, Chris Chae, Nathaniel McIlwaine, Giovanni Esteves, Thomas E. Beechem, Craig Moe, Rytis Dargis, Jeremy Jones, Jacob H. Leach, Robert M. Lavelle, David W. Snyder, Jon-Paul Maria, Roy H. Olsson, Joan M. Redwing, Azadeh Ansari, Jinwoo Hwang, Xiaojia Wang, Brian M. Foley, Susan E. Trolier-McKinstry, Sukwon Choi
Summary: AlN thin films have great potential for applications in optoelectronics, power electronics, and microelectromechanical systems. The thermal conductivity of these thin films exhibits an anisotropic behavior, which is influenced by film thickness and grain size. Electron microscopy reveals that the presence of grain boundaries and dislocations limits the thermal conductivity. Simulation results indicate that self-heating in AlN thin films significantly affects the power handling capability of RF filters.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Gabriel K. Nzulu, Elena Naumovska, Maths Karlsson, Per Eklund, Martin Magnuson, Arnaud le Febvrier
Summary: Thin films of BaZr1-xScxO3-x/2 with different orientations were deposited on four different substrates. After annealing at 600 degrees C in air, the (100)-oriented films showed higher stability of the structure.
