Article
Nanoscience & Nanotechnology
Nikolaus Weinberger, Tim Kodalle, Tobias Bertram, Rene Gunder, Andreas Saxer, Roman Lackner, Georg N. Strauss, Christian A. Kaufmann
Summary: In this study, Rb, In, and Se were deposited at various substrate temperatures, with RbInSe2 crystal phase detectable at 350 degrees C. Crystallization of monoclinic RbInSe2 was observed at 215 degrees C on the sample grown at the lowest temperature. The morphology of the layers and the preferred crystal orientation of the RISe layer changed with increasing substrate temperature.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Lukas Ahrens, Olena Tverskoy, Svenja Weigold, Michael Ganschow, Frank Rominger, Jan Freudenberg, Uwe H. F. Bunz
Summary: Doubly alkylene bridged 6,13-diphenylpentacene and analogously bridged azapentacenes have been prepared and are shown to be persistent. These doubly bridged azapentacenes exhibit superior photochemical, oxidative, and thermal stabilities compared to azapentacenes protected by bis(TIPS-ethynyl) substituents. Clipping an azaacene into a large ring is a viable complement in stabilization.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Guillaume Freychet, Eliot Gann, Lars Thomsen, Xuechen Jiao, Christopher R. McNeill
Summary: The performance of optoelectronic devices based on conjugated polymers depends on molecular packing, and resonant diffraction at the sulfur K-edge has been found to provide additional information about crystalline structures. This new method can discriminate between different packing structures and unlock important microstructural information about conjugated polymers.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Review
Chemistry, Multidisciplinary
Olivier Thomas, Stephane Labat, Thomas Cornelius, Marie-Ingrid Richard
Summary: X-ray imaging of strains has made impressive progress recently, with improved resolution and optical elements. Development of new detectors has revolutionized measurement strategies. The introduction of a new accelerator ring concept has significantly increased brightness and coherent flux. In the next decade, fast three-dimensional imaging methods will emerge to track the evolution of strains in materials.
Article
Chemistry, Multidisciplinary
Shuo Feng, Rajesh Kumar Singh, Yucheng Fu, Zhuo Li, Yulong Wang, Jie Bao, Zhijie Xu, Guosheng Li, Cassidy Anderson, Lili Shi, Yuehe Lin, Peter G. Khalifah, Wei Wang, Jun Liu, Jie Xiao, Dongping Lu
Summary: In this study, a simple strategy was demonstrated for constructing low-tortuosity through-pores in both vertical and planar directions of electrodes by casting large particles into single-particle-layer electrodes. Through multi-scale characterizations and simulations, correlations between material/electrode structures, electrolyte permeability, polysulfide migration, and sulfur reactions were elucidated. The high-loading and dense sulfur cathode fabricated by this method delivers a high specific capacity at a very low electrolyte/sulfur ratio.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
M. Sh. Abdel-wahab, Ahmed H. Hammad
Summary: Copper oxide thin films doped with nickel were prepared using sputtering technique, and the content of nickel in the lattice was controlled by changing the sputtering power. Different nickel contents led to structural changes in the copper oxide lattice, affecting lattice strain, grain size, and optical properties of the films.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Rongfang Wang, Xingming Wei, Fengling Shen, Dejiang Yu, Liya Zhou
Summary: CdTexSe(1-x) quantum dots were synthesized as a new red phosphor for LEDs, characterized by X-ray diffraction and other spectroscopy techniques. The red LEDs fabricated using these quantum dots showed good optical properties and are promising candidates for LED applications.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Tanzeela Fazal, Shahid Iqbal, Mazloom Shah, Bushra Ismail, Nusrat Shaheen, Abdulrahman Alharthi, Nasser S. Awwad, Hala A. Ibrahium
Summary: Patterning thin films according to specifications is crucial. This study focuses on improving the structural and optical properties of Bi2S3 materials through chemical bath deposition, while also characterizing the synthesized morphologies. The researchers found that chemical bath deposition is an effective strategy for obtaining photovoltaic thin films with different morphologies.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Physical
Burak Guzelturk, Thomas Winkler, Tim W. J. Van de Goor, Matthew D. Smith, Sean A. Bourelle, Sascha Feldmann, Mariano Trigo, Samuel W. Teitelbaum, Hans-Georg Steinruck, Gilberto A. de la Pena, Roberto Alonso-Mori, Diling Zhu, Takahiro Sato, Hemamala Karunadasa, Michael F. Toney, Felix Deschler, Aaron M. Lindenberg
Summary: Diffuse X-ray scattering with femtosecond resolution reveals the formation and relaxation of polaronic distortions in halide perovskites. These structural changes are quantified and correlated to transient changes in carrier effective mass.
Article
Chemistry, Multidisciplinary
Xiaolong Zhang, Hongli Suo, Zili Zhang, Shuai Ye, Lin Ma, Min Liu, Yaotang Ji, Xufeng Wang, Kausar Shaheen, Lei Wang, Qiuliang Wang
Summary: Doping of nanoparticles is an effective method to improve the performance of nanocomposite thin films. This study utilized 2D-XRD technique to investigate the orientation and phase evolution of BYNO doped particles in YBCO. It was found that the BYNO particles near the LAO substrate had the same orientation, while the rest of the particles had random orientation. The higher random orientation of BYNO particles contributed to the improved superconducting properties of the thin films. A nucleation and growth model for the BYNO-doped YBCO nanocomposite film was established.
Article
Polymer Science
Viktoriia Untilova, Huiyan Zeng, Pablo Durand, Laurent Herrmann, Nicolas Leclerc, Martin Brinkmann
Summary: Redox doping is widely utilized to enhance the thermoelectric properties of polymer semiconductors by transforming them into conducting polymers. The study presents a structural model for F(6)TCNNQ-doped P3HT, highlighting the improved order of F(6)TCNNQ molecules compared to F(4)TCNQ in the crystals, leading to enhanced charge conductivities and thermoelectric power factors.
Article
Chemistry, Physical
Ken Kojio, Aya Fujimoto, Chigusa Nagano, Shuhei Nozaki, Kazutoshi Yokomachi, Kazutaka Kamitani, Hirohmi Watanabe, Atsushi Takahara
Summary: In this study, the specific deformation behavior of crystalline polymer films under a multiaxial stress field was investigated. The experiments revealed that the string-shaped crystalline polymer chain structure produces local anisotropic uniaxial stress, leading to changes in the aggregation structure of the films.
Article
Chemistry, Physical
Zhongnan Guo, Zhao Liu, Jun Deng, Jiawei Lin, Zijing Zhang, Xue Han, Fan Sun, Wenxia Yuan
Summary: This study presents the synthesis of two new quaternary chalcogenides KMgCuSe2 and KMgCuTe2 with ThCr2Si2-type structure, featuring randomly distributed Mg and Cu in single-crystal refinement, and exhibiting semiconducting properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Charles A. Bolzan, Danay J. Manzo, Christian Notthoff, Patrick Kluth, Raquel Giulian
Summary: The study reveals that In(1-x)Al(x)Sb films are easily amorphized and become porous after irradiation. Films with higher Al concentrations are less porous after irradiation and show fewer Al-Sb bonding on the surface.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Chemistry, Physical
Asma A. Medjahed, Tao Zhou, Juan Camilo Alvarez Quiceno, Pia Dally, Pascal Pochet, Tobias U. Schulli, David Djurado, Peter Reiss, Stephanie Pouget
Summary: This study investigates the mechanisms of strain and texture observed in MAPbI(3) thin films deposited on various oxide substrates. The results show that the strain of the perovskite layers is essentially relaxed behavior, contradicting the commonly accepted hypothesis. The texture in the perovskite layers is studied using synchrotron full-field diffraction X-ray microscopy, and the stability of different orientations is analyzed by DFT calculations.
ADVANCED ENERGY MATERIALS
(2022)
