Article
Chemistry, Multidisciplinary
Kandammathe Valiyaveedu Sreekanth, Rohit Medwal, Yogesh Kumar Srivastava, Manukumara Manjappa, Rajdeep Singh Rawat, Ranjan Singh
Summary: The study demonstrates dynamic color generation using electrically tunable thin film optical coatings consisting of two different phase change materials. These coatings excite Fano resonance through structural phase switching, covering the entire visible spectrum and showing wide applications in tunable displays and active nanophotonic devices.
Article
Chemistry, Physical
Valentin Sallaz, Sylvain Poulet, Jouhaiz Rouchou, Jean-Marc Boissel, Isabelle Chevalier, Frederic Voiron, Yann Lamy, Sami Oukassi
Summary: Nanometric amorphous TiO2 films with a thickness of 6-21 nm were studied in liquid- and solid-state electrolyte. The films showed a volumetric capacity that approached the theoretical value and displayed a constant initial amount of intercalated lithium ions after LiPON deposition. Additionally, a hybrid micro-supercapacitor was successfully fabricated with a TiO2 film, achieving an operating voltage window of 3 V and a high surface capacitance.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Seongrok Seo, Sooeun Shin, Eunsoo Kim, Seonghwa Jeong, Nam-Gyu Park, Hyunjung Shin
Summary: Significant progress has been made in improving the power conversion efficiency of perovskite solar cells over the past decade, but long-term stability remains a challenge. By utilizing an interface-engineered stabilization approach with amorphous TiO2, ion migration in PSCs is prevented, leading to improved operational stability and increased device efficiency. The combination of Spiro-OMeTAD/a-TiO2 layers has shown unprecedented results in promoting device efficiency, with substantial improvement in operational stability compared to control PSCs.
ACS ENERGY LETTERS
(2021)
Article
Physics, Condensed Matter
Jing Wang, Bingcheng Luo
Summary: The study shows that annealing can improve the optical and electronic properties of amorphous BaSnO3 thin films, including reducing defect levels, increasing the optical band gap, decreasing leakage current, and enhancing the breakdown electric field.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Nanoscience & Nanotechnology
Rui Huang, Hongye Wang, Cheng Tao, Hua Hao, Zhonghua Yao, Hanxing Liu, Minghe Cao
Summary: By elaborately designing the multivariant ions Me, BiMeO3 system thin film Bi(Ni0.5Zr0.5)O-3, a dielectric material with high polarization, large breakdown strength, and a localized heterostructure was achieved, resulting in an excellent energy storage density of 77.42 J cm(-3) and efficiency of 70.29% at 5.60 MV cm(-1). The enhanced breakdown strength of the Bi(Ni0.5Zr0.5)O-3 thin film is mainly attributed to the amorphous phase induced by low preparation temperature and the oxygen vacancy bound by the valence change of Ni2+ ion, which reduces leakage current density. This design approach is expected to be widely used in the development of BiMeO3 system thin film.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Ceramics
Ryoko Suzuki
Summary: High-quality porous SiO2 thin films with ultralow refractive indices were prepared using a sol-gel method. The films exhibited low light scattering and were hydrophobic, making them suitable for use in various optical instruments.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Ablat Abliz, Patigul Nurmamat, Da Wan
Summary: In this study, hetero-structured and self-passivated oxide thin film transistors (TFTs) were fabricated successfully. A rational design achieved a high field-effect mobility and small sub-threshold swing. Experimental observations indicate that the accumulation of free carriers near the aIGZO:N2O/TiO2 interfaces resulted from the transfer of electrons. Additionally, appropriate treatment reduced defects and trap density, and the ultra-thin TiO2 layer acted as a surface passivation layer.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Akhmed K. Akhmedov, Aslan Kh. Abduev, Eldar K. Murliev, Victor V. Belyaev, Abil Sh. Asvarov
Summary: It is possible to fabricate indium zinc oxide (IZO) films with a wide range of optoelectronic properties by using different oxygen contents in the working gas during sputtering deposition. Additionally, high deposition temperature is not necessary to achieve excellent transparent electrode quality in the IZO films. By modulating the oxygen content in the working gas during RF sputtering, IZO-based multilayers were deposited, consisting of ultrathin IZO unit layers with high electron mobility alternating with layers characterized by high concentration of free electrons. Through optimizing the thicknesses of each unit layer, low-temperature 400 nm thick IZO multilayers with excellent transparent electrode quality were obtained, exhibiting low sheet resistance, high transmittance in the visible range, and a very flat multilayer surface.
Article
Chemistry, Multidisciplinary
Vincenzo Balzano, Emanuele Cavaliere, Mattia Fanetti, Sandra Gardonio, Luca Gavioli
Summary: The study highlights the significant role of the substrate in determining the behavior of nanogranular thin films during annealing, with different substrates leading to distinct evolution of film morphology and optical properties.
Article
Materials Science, Multidisciplinary
Alperen Sezgin, Radim Ctvrtlik, Lukas Vaclavek, Jan Tomastik, Libor Nozka, Ebru Mensur, Seniz Turkuz
Summary: The structural, optical, and mechanical properties of magnetron sputtered TiO2 and TiO2-ZrO2 mixture transparent thin films were investigated, along with the influence of heat treatment. XPS, GI-XRD, and SEM were used to study the structural properties of the films, while spectrophotometry and spectroscopic ellipsometry were employed for optical characterizations. Nano-indentation and nano-scratch tests were used to examine the hardness and scratch behavior. The presence of ZrO2 in TiO2-ZrO2 films enhanced hardness and prevented crystallization of TiO2 after annealing, resulting in better surface quality and higher thermal stability. The addition of ZrO2 also led to a shift in absorption edge and decreased sharpness, leading to less absorption in the visible range.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Surajit Dutta, Vivas Bagwe, Gorakhnath Chaurasiya, A. Thamizhavel, Rudheer Bapat, Pratap Raychaudhuri, Sangita Bose
Summary: This study presents the growth, characterization, and superconducting properties of a new amorphous superconductor, RexZr (x approaching 6), in thin films. It was found that films with thickness greater than 40 nm exhibited a superconducting transition temperature of 5.9 K, with marginal changes in superconducting properties as the film thickness decreased to 8 nm. Scanning tunneling spectroscopy and penetration depth measurements supported the evidence for a single-gap strong coupling s-wave superconductor.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Kandammathe Valiyaveedu Sreekanth, Chandreyee Manas Das, Rohit Medwal, Mayank Mishra, Qingling Ouyang, Rajdeep Singh Rawat, Ken-Tye Yong, Ranjan Singh
Summary: This study reports on an innovative lithography-free nanophotonic cavity design for achieving electrically tunable Goos-Hanchen shifts at the singular phase of light in the visible wavelengths. Experimental results demonstrate an enhanced G-H shift of 110 times at the Brewster angle of the thin-film cavity.
ADVANCED MATERIALS
(2021)
Article
Computer Science, Information Systems
Kamlendra Vikram, Uvaraja Ragavendran, Kanak Kalita, Ranjan Kumar Ghadai, Xiao-Zhi Gao
Summary: In this study, diamond-like carbon (DLC) thin films were successfully deposited on silicon substrates using PECVD technique. By experimental design, regression analysis, and optimization algorithm, optimal material properties were determined, demonstrating the effectiveness of various methods.
CMC-COMPUTERS MATERIALS & CONTINUA
(2021)
Article
Chemistry, Physical
U. Urdiroz, F. J. Palomares, A. Mayoral, I. Soldatov, R. Schafer, J. M. Gonzalez, M. Sanchez-Agudo, E. Navarro, A. Ruiz, M. Alonso, L. Vazquez, F. Cebollada
Summary: This study investigates the crystallization processes and magnetic properties of two sets of amorphous Fe80B20 films deposited on substrates with different nature. The type of substrate impacts the crystallization temperature and mechanism, ultimately influencing the magnetic characteristics of the films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Physics, Applied
Aleksander M. Wrobel, Pawel Uznanski
Summary: Our study reviews the production of amorphous hydrogenated silicon carbonitride thin films through remote plasma chemical vapor deposition (RP-CVD) using 1,1,3,3-tetramethyldisilazane as a single-source compound with H2 + N2 upstream-gas mixture. The effects of nitrogen content in the mixture on the RP-CVD process, chemical structure, surface morphology, and properties of the deposited films are described. The a-SiCN films show great potential as coatings for improving the surface mechanics of engineering materials in advanced technologies.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Chemistry, Multidisciplinary
Henryk A. Witek, Chien-Pin Chou, Grzegorz Mazur, Yoshifumi Nishimura, Stephan Irle, Balint Aradi, Thomas Frauenheim, Keiji Morokuma
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
(2016)
Article
Chemistry, Multidisciplinary
L. Claudia Gomez-Aguirre, Breogan Pato-Doldan, Alessandro Stroppa, Li-Ming Yang, Thomas Frauenheim, Jorge Mira, Susana Yanez-Vilar, Ramon Artiaga, Socorro Castro-Garcia, Manuel Sanchez-Andujar, Maria Antonia Senaris-Rodriguez
CHEMISTRY-A EUROPEAN JOURNAL
(2016)
Article
Electrochemistry
Peter Deak, Jolla Kullgren, Balint Aradi, Thomas Frauenheim, Ladislaw Kavan
ELECTROCHIMICA ACTA
(2016)
Article
Chemistry, Physical
Sougata Pal, Dhara J. Trivedi, Alexey V. Akimov, Balint Aradi, Thomas Frauenheim, Oleg V. Prezhdo
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2016)
Article
Nanoscience & Nanotechnology
Li-Ming Yang, Thomas Frauenheim, Eric Ganz
JOURNAL OF NANOMATERIALS
(2016)
Article
Chemistry, Physical
Oded Hod, Cesar A. Rodriguez-Rosario, Tamar Zelovich, Thomas Frauenheim
JOURNAL OF PHYSICAL CHEMISTRY A
(2016)
Review
Chemistry, Physical
Qiang Cui, Rigoberto Hernandez, Sara E. Mason, Thomas Frauenheim, Joel A. Pedersen, Franz Geiger
JOURNAL OF PHYSICAL CHEMISTRY B
(2016)
Article
Chemistry, Multidisciplinary
Huilong Dong, Liujiang Zhou, Thomas Frauenheim, Tingjun Hou, Shuit-Tong Lee, Youyong Li
Article
Chemistry, Multidisciplinary
Peng-Fei Liu, Liujiang Zhou, Thomas Frauenheim, Li-Ming Wu
Article
Chemistry, Physical
Liujiang Zhou, Z. F. Hou, Bo Gao, Thomas Frauenheim
JOURNAL OF MATERIALS CHEMISTRY A
(2016)
Article
Materials Science, Multidisciplinary
Liujiang Zhou, Bin Shao, Wujun Shi, Yan Sun, Claudia Felser, Binghai Yan, Thomas Frauenheim
Article
Materials Science, Multidisciplinary
Falko Schmidt, Marc Landmann, Eva Rauls, Nicola Argiolas, Simone Sanna, W. G. Schmidt, Arno Schindlmayr
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
(2017)
Article
Materials Science, Multidisciplinary
M. Landmann, E. Rauls, W. G. Schmidt
Article
Materials Science, Multidisciplinary
Deepti Verma, Ben Hourahine, Thomas Frauenheim, Richard D. James, Traian Dumitrica
Article
Materials Science, Multidisciplinary
M. Lorke, T. Frauenheim, A. L. da Rosa