A Review of Matrix Converters in Motor Drive Applications by Annette von Jouanne, Emmanuel Agamloh, Alex Yokochi

“…This paper reviews the history, recent developments and commercialization of MCs and discusses several technical requirements and challenges, including bidirectional switches, wide bandgap (WBG) opportunities using GaN and SiC, overvoltage protection, electromagnetic interference (EMI) and ride-through in motor drive applications. …”
Get full text

The Effect of Geometrical Parameters on Resonance Characteristics of Acoustic Metamaterials with Negative Effective Modulus by Xiao-Le Yan, Li-Mei Hao, Mei-Ling Men, Zhi Chen

“…The acoustic metamaterial is restricted by the narrow bandgap of sound waves for the local resonance of metamaterial unit cells. …”
Get full text

Electronic Properties of TiO2 Nanoparticles Films and the Effect on Apatite-Forming Ability by Johanna Löberg, Jenny Perez Holmberg, Ingela Mattisson, Anna Arvidsson, Elisabet Ahlberg

“…Both density of states (DOS) in the bandgap of TiO2 and the active area were determined. …”
Get full text

Effect of A/B sites co-doping on the structure, electric and dielectric properties of CaTiSiO5 ceramics by Hanwen Ni, Zichen He, Zhifu Liu

“…The CTS-based ceramics behave high dielectric temperature stability. In addition, the bandgap of the CTS-based ceramics increased significantly, which is favorable for improving the breakdown strength of the material. …”
Get full text

Studies on the electrical and optical conductivity of barium-nickel ferrite nanoparticles doped with Zn by Sadiq H. Khoreem, A. H. AL-Hammadi

“…The results indicate that Zn doping leads to significant changes in lattice parameters, crystallite size, and bandgap energy, suggesting potential applications in optoelectronics, photonics devices, and energy storage."…”
Get full text

Surface Planarization‐Epitaxial Growth Enables Uniform 2D/3D Heterojunctions for Efficient and Stable Perovskite Solar Modules by Dongxu Lin, Jun Fang, Sibo Li, Zhenye Zhan, Huan Li, Xin Wang, Guanshui Xie, Daozeng Wang, Nuanshan Huang, Haichen Peng, Weiguang Xie, Luis K. Ono, Yabing Qi, Longbin Qiu

“…As a result, a stabilized power output efficiency of 25.97% is achieved by using a 3D perovskite composition with a bandgap of 1.55 eV. To demonstrate the universality of the strategy applied for different perovskites, the champion device based on a 1.57 eV bandgap 3D perovskite results in an efficiency of 25.31% with a record fill factor of 87.6%. …”
Get full text

The Study of Structural, Optical, and Dielectric Properties of Magnesium Chloride-Doped Triglycine Sulphate Ferroelectric Single Crystals by Dessale Alemu, Shita Firehun, Tizazu Abza, M. Esthaku Peter

“…The UV-VI/NIR spectra analysis confirmed that both pure and 1 and 2 mol% of MgCl2-doped TGS single crystals have wide optical transparency in the wavelength range of 236–1100 nm. The bandgap energy of both samples has been found to be 5.25 eV. …”
Get full text

Examining Impacts of Acidic Bath Temperature on Nano-Synthesized Lead Selenide Thin Films for the Application of Solar Cells by Saka Abel, Jule Leta Tesfaye, N. Nagaprasad, R. Shanmugam, L. Priyanka Dwarampudi, Tyagi Deepak, Hongxia Zhang, Ramaswamy Krishnaraj, B. Stalin

“…There was a decrement of energy bandgap that is from 2.4 eV to 1.2 eV with increasing temperature 20°C–85°C. …”
Get full text

Enlarging moment and regulating orientation of buried interfacial dipole for efficient inverted perovskite solar cells by Yang Peng, Yu Chen, Jing Zhou, Chuan Luo, Weijian Tang, Yuwei Duan, Yihui Wu, Qiang Peng

“…Moreover, this strategy is extended to the wide-bandgap perovskite and large-area devices, which delivers high PCEs of 22.02% and 24.11%, respectively. …”
Get full text

Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs) by Imtiaz Ahmad, Suhail H. Serbaya, Ali Rizwan, Malik Sajjad Mehmood

“…UV-VIS data revealed the values of Urbach energies 520, 210, 460, and 430 meV, and the values of direct bandgap energies 5.14, 6.12, 5.54, 5.74 eV, respectively. …”
Get full text

Effect of Cathodic Voltage on Structural, Optical, and Surface Properties of Electrodeposition of CdZnTe Thin Film for Optoelectronic Applications by Ahmed Umer Yimamu, Fekadu Tolessa Maremi, Solomon Zerihun Werta, Francis Birhanu Dejene, Ibrahim Mohammed Beker, Vanthini Nelson Adoons, Megersa Kassim Hussen, Selepe Joel Motloung, Jacobus J. Terblans

“…The UV-Vis analysis revealed that the energy bandgap of CdZnTe thin films varied increased from 1.55 to 2.05 eV as the deposition voltage increased from 1700 to 1850 mV. …”
Get full text

Construction of S-type TiO2/CoPc heterojunction and photocatalytic degradation of tetracycline by WANG Jun, FU Shuang, HOU Peng, LIU Jun, SUN Chunxue, ZHANG Hongguang

“…TiO2 is one of the most widely used semiconductors. However, the wider bandgap and the fast complexation of carriers constrain its practical application. …”
Get full text

Correlations of Calcination Temperature with the Catalytic Properties of CuFe2O4 for the Synthesis of Green Fuels by Judith Zander, Florian Daumann, Rameshwori Loukrakpam, Christina Roth, Birgit Weber, Roland Marschall

“…The effect of post‐synthetic calcination on particle morphology, crystal structure, and inherent properties such as optical bandgap, magnetic moment, or degree of inversion is investigated. …”
Get full text

Photocatalytic Degradation of Organic Dyes under Visible Light on N-Doped TiO2 Photocatalysts by Olga Sacco, Marco Stoller, Vincenzo Vaiano, Paolo Ciambelli, Angelo Chianese, Diana Sannino

“…The photocatalytic activity of N-doped titanium dioxide, synthesized by direct hydrolysis of titanium tetraisopropoxide with ammonia, was evaluated by means of a batch photoreactor. The bandgap energy of titanium dioxide was moved in the visible range from 3.3 eV to 2.5 eV. …”
Get full text

Mathematical Modeling of Properties and Structures of Crystals: From Quantum Approach to Machine Learning by Grzegorz Matyszczak, Christopher Jasiak, Gabriela Rusinkiewicz, Kinga Domian, Michał Brzozowski, Krzysztof Krawczyk

“…This is due to the fact that prepared crystalline solids of practically useful materials (inorganic or organic) may be utilized for the thorough characterization of important properties such as (among others) energy bandgap, light absorption, thermal and electric conductivity, and magnetic properties. …”
Get full text

Pressure-controlled luminescence in fast-response barium fluoride crystals by Marilou Cadatal-Raduban, Luong Viet Mui, Masahiro Yamashita, Yuki Shibazaki, Toshihiko Shimizu, Nobuhiko Sarukura, Kohei Yamanoi

“…Increasing the pressure decreases the core-valence bandgap due to the downward expansion of the valence band, resulting in a decrease in the valence band minimum. …”
Get full text

Probing and manipulating the Mexican hat-shaped valence band of In2Se3 by James Felton, Jordan Harknett, Joe Page, Zhuo Yang, Nada Alghofaili, James N. O’Shea, Laurence Eaves, Yoshimitsu Kohama, Mark T. Greenaway, Amalia Patanè

“…Here, we use nanoscale angle-resolved photoemission electron spectroscopy and optical transmission in high magnetic fields to reveal the electronic band structure of the van der Waals ferroelectric indium selenide (α-In2Se3). This indirect bandgap semiconductor features a weakly dispersed valence band, which is shaped like an inverted Mexican hat. …”
Get full text

Crystallographic characterization of Ag‐doping in nanocrystallite hydroxyapatite and evaluation of photocatalytic activity of organic pollutants by Md. Sahadat Hossain, Shifa Sarkar, Samina Ahmed

“…The samples were characterized with the aid of X‐ray diffraction (phase analysis, crystallographic characterization, and crystal size calculation using Scherrer equation and different models), scanning electron microscopy, and optical bandgap energy. The Hap containing 0.25% Ag showed better photocatalytic activity in various dye concentrations, catalyst doses, and pH. …”
Get full text

Predicting thermodynamic stability of inorganic compounds using ensemble machine learning based on electron configuration by Hao Zou, Haochen Zhao, Mingming Lu, Jiong Wang, Zeyu Deng, Jianxin Wang

“…We present two case studies to demonstrate that our method can facilitate the exploration of new two-dimensional wide bandgap semiconductors and double perovskite oxides. …”
Get full text

Transparent electro-optic ceramics: Processing, materials, and applications by Iva Milisavljevic, Man Zhang, Qinghui Jiang, Qing Liu, Yiquan Wu

“…Synthesis of high-performance transparent EO ceramics requires high purity of raw materials, high density, homogeneous composition, uniform grain size, and relatively wide bandgap. Powder synthesis and sintering are two of the critical steps involved in the fabrication of highly transparent EO ceramics. …”
Get full text