Results 31 to 40 of about 341,789 (294)

Controlling lithium cobalt oxide phase transition using molten fluoride salt for improved lithium-ion batteries

Communications Materials
LiCoO2 is a historic lithium-ion battery cathode that continues to be used today because of its high energy density. However, the practical capacity of LiCoO2 is limited owing to the harmful phase transition at high voltages, which prevents the ...
Mayumi Mikami, Jo Saito, Teruaki Ochiai, Masahiro Takahashi, Tatsuyoshi Takahashi, Yohei Momma, Kazutaka Kuriki, Rihito Wada, Kazune Yokomizo, Genki Kobayashi, Shinichi Komaba, Shunpei Yamazaki   +11 more
doaj   +1 more source

Influence of Fluorine Doping on Rutile TiO₂ Nanostructures for Visible-Light-Driven Photocatalysis: A DFT + U Study

Nanomaterials
In this work, a density functional theory (DFT) with Hubbard correction (U) approaches implemented through the Quantum ESPRESSO code is utilized to investigate the effects of fluorine (F) doping on the structural, electronic, and optical properties of ...
Fikadu Takele Geldasa, Francis Birhanu Dejene   +1 more
doaj   +1 more source

COMPUTER SIMULATION OF METAL-SEMICONDUCTOR AND SEMICONDUCTOR-SEMICONDUCTOR INTERFACES

Le Journal de Physique Colloques, 1990
A Si-Ge interatomic potential was used to calculate the energy difference between strained and unstrained Ge layers on Si(001) substrates as a function of the number of layers . From this we estimate the critical thickness for dislocation nucleation to be less than 12 layers .
Matthai, C., Ashu, P.
openaire   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

Uncertainty Assessment Framework for IGBT Lifetime Models. A Case Study of Solder-Free Modules

International Journal of Prognostics and Health Management
Insulated gate bipolar transistors (IGBTs) are ubiquitous semiconductor devices used in diverse electronic power applications. The reliability and lifetime assessment of IGBTs is intricate and influenced by different ageing processes.
Ander Zubizarreta, Markel Penalba, David Garrido, Unai Markina, Xabier Ibarrola, Jose Aizpurua   +5 more
doaj   +1 more source

Fabrication of Er3+/Yb3+ Co-Doped Bi5O7I Microsphere With Upconversion Luminescence and Enhanced Photocatalytic Activity for Bisphenol A Degradation

Frontiers in Chemistry, 2020
Er3+/Yb3+ co-doped Bi5O7I uniform porous microsphere photocatalysts were synthesized by a two-step chemical method, which possesses excellent photocatalytic performance and upconversion luminescence property.
Baowei Cao, Siwen Gong, Siyaka Mj Zubairu, Lingna Liu, Yunhua Xu, Lei Guo, Rui Dang, Gangqiang Zhu, Gangqiang Zhu   +8 more
doaj   +1 more source

Pressure Sensing of Symmetric Defect Photonic Crystals Composed of Superconductor and Semiconductor in Low-Temperature Environment

Crystals, 2023
We theoretically investigate the defect mode transmittance of light waves in superconductor–semiconductor photonic crystals and its pressure-sensing dependence.
Haiyang Hu, Xiaoling Chen, Miaomiao Zhao, Liyan Wang, Ming Fang, Dong Zhao   +5 more
doaj   +1 more source

Bias‐Free Highly Efficient and Stable Dye‐Sensitized Photoelectrochemical Cells via Cascade Charge Transfer

Advanced Functional Materials, EarlyView.
A buried‐junction DSPEC design is introduced that leverages cascade charge transfer to enhance efficiency, stability, and versatility. This approach facilitates effective charge transfer and minimizes recombination losses, leading to significant improvements.
Jun‐Hyeok Park, Kyounglim Kim, Jinyoung Lee, Sarang Kim, Gwangsu Yoon, So Yeon Yoon, Jeong Kyeong Lee, Ji‐Wook Jang, Tae‐Hyuk Kwon   +8 more
wiley   +1 more source

High-performance single-crystalline In2O3 field effect transistor toward three-dimensional large-scale integration circuits

Communications Materials
Formation of a single crystalline oxide semiconductor on an insulating film as a channel material capable of three-dimensional (3D) stacking would enable 3D very-large-scale integration circuits.
Shunpei Yamazaki, Fumito Isaka, Toshikazu Ohno, Yuji Egi, Sachiaki Tezuka, Motomu Kurata, Hiromi Sawai, Ryosuke Motoyoshi, Etsuko Asano, Satoru Saito, Tatsuya Onuki, Takanori Matsuzaki, Michio Tajima   +12 more
doaj   +1 more source

Electronic Properties of Atomic Layer Deposited HfO₂ Thin Films on InGaAs Compared to HfO₂/GaAs Semiconductors

Crystals
This paper demonstrates how the treatment of III-V semiconductor surface affects the number of defects and ensures the conformal growth of the high-k dielectric thin film.
Irving K. Cashwell, Donovan A. Thomas, Jonathan R. Skuza, Aswini K. Pradhan   +3 more
doaj   +1 more source