Article
Energy & Fuels
Debamita Roy, Dip Prakash Samajdar, Abhijit Biswas
Summary: This paper investigates the optoelectronic performance of GaAs and its alloy GaAs1-xBix nanowire solar cells, showing that GaAs0.99Bi0.01 NW exhibits the highest power conversion efficiency, surpassing GaAs NW by 6.425%.
Article
Energy & Fuels
Debamita Roy, Dip Prakash Samajdar, Abhijit Biswas
Summary: The optoelectronic characteristics of a core-shell nanowire hybrid solar cell were investigated, and the efficiency was improved through optimization of the geometrical parameters.
Article
Nanoscience & Nanotechnology
Fang-Fang Wu, Di Zhou, Chao Du, Biao-Bing Jin, Chun Li, Ze-Ming Qi, Shikuan Sun, Tao Zhou, Qiang Li, Xiu-Qun Zhang
Summary: By substituting Bi3+ ions in SmNbO4 ceramics, the study optimized the dielectric properties of microwave dielectric ceramics, resulting in the exceptional performance of (Sm0.875Bi0.125)NbO4 ceramics with low loss, stable temperature, and zero temperature coefficient.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Fang-Fang Wu, Di Zhou, Chao Du, Biao-Bing Jin, Chun Li, Ze-Ming Qi, Shikuan Sun, Tao Zhou, Qiang Li, Xiu-Qun Zhang
Summary: This study investigates the optimization of dielectric properties of SmNbO4 ceramics by substituting Bi3+ ions. The experimental results show that Bi3+ doping effectively regulates the temperature coefficient of resonant frequency by adjusting the strains and permittivity. The SB0.125N material exhibits exceptional performance with low loss and stable temperature, making it a potential candidate for sub-6 GHz antennas.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Sultan Alhassan, Daniele de Souza, Amra Alhassni, Amjad Almunyif, Saud Alotaibi, Abdulaziz Almalki, Maryam Alhuwayz, Igor P. Kazakov, Alexey Klekovkin, Vladimir Tsekhosh, Igor A. Likhachev, Elkhan M. Pashaev, Sergio Souto, Yara Galvao Gobato, Noor Al Saqri, Helder Vinicius Avanco Galeti, Faisal Al Mashary, Hind Albalawi, Norah Alwadai, Mohamed Henini
Summary: This study investigated the effects of substrate orientation on dilute GaAs1-xBix epitaxial structures, revealing significant impacts on structural, electrically, and optically active defects, as well as Bi incorporation and electrical properties. The substrate orientation was found to influence the characteristics of Schottky diodes, with differences in ideality factor, barrier height, and number of electrically active traps. Photoluminescence and Raman spectra indicated distinct compressive strain and contributions from Bi-related traps, consistent with DLTS results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Ankit Dixit, Dip Prakash Samajdar, Navjeet Bagga
Summary: This paper introduces a novel biosensor structure and investigates its performance characteristics and working principles. By using dielectric modulation technology and raised source-drain architecture in GaAs1-x Sb (x) FinFET, sensitive detection of biomolecules is achieved. Changes in different electrical parameters can be identified by altering the dielectric constant of the cavity region.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Bo Zhu, Xu Lu, Jiadang Li, Wenhao Xie, Lifei Wang, Qiang Zhang, Jianfeng Fan, Yun Zheng
Summary: Bismuth is the most common alloying element for high-performance Mg3Sb2-based thermoelectric compounds. In this study, theoretical calculations and experimental results show that bismuth alloying can reduce the band gap, increase carrier concentration and Seebeck coefficient, and significantly reduce thermal conductivity of undoped Mg3Sb2-xBix solid solutions. The peak ZT and average ZT values of the x=0.2 sample are 93% and 219% higher than those of the unalloyed sample, respectively.
Article
Physics, Condensed Matter
Agatha C. Ulibarri, Rishabh Kothari, Alejandro Garcia, Jean-Christophe Harmand, Sangjun Park, Fabian Cadiz, Yves Lassailly, Jacques Peretti, Alistair C. H. Rowe
Summary: A systematic study was conducted on the spin-dependent recombination (SDR) in dilute nitride alloys of GaAs1-xNx as a function of nitrogen content. The results showed that the density of electronically active defects and the SDR process increase with increasing nitrogen content, emphasizing the importance of including nonspin-dependent recombination channels in a complete model of SDR.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Crystallography
Zhuo Li, Dandan Zhang, Chenbo Wang, Jiayong Zhang, Zixuan Wang, Zhuo Wang, Xin Yan, Tao Ai, Dawei Wang, Zhilun Lu, Yanhui Niu
Summary: NBT-based ceramics are promising for energy-storage applications due to their outstanding dielectric and ferroelectric properties. However, they have high coercive field and large remnant polarization, which are unfavorable for practical use. By doping/forming solid solutions, NBT-based ceramics with relaxation behavior have been studied. In this study, BT was introduced to the NBT-BMN system to form a homogeneous solid solution. The optimal energy storage properties and temperature stability were obtained in BNT-7BT-BMN ceramics, making them promising for pulse power applications.
Article
Physics, Applied
Yoriko Tominaga, Yukihiro Horita, Yuto Takagaki, Fumitaka Nishiyama, Mitsuki Yukimune, Fumitaro Ishikawa
Summary: This study reveals the crystalline quality of the dilute bismide alloy GaAs1-x Bi x grown on a GaAs(001) substrate using molecular beam epitaxy, with the substrate temperature and As flux playing a dominant role in the crystal structure and Bi introduction. The characterization shows that a substrate temperature of 250 degrees C produces a single crystalline GaAs0.982Bi0.018 film, while a lower temperature of 180 degrees C results in an amorphous film.
APPLIED PHYSICS EXPRESS
(2022)
Article
Chemistry, Physical
G. Resendiz-Hernandez, J. E. Leal-Perez, R. Herrera-Basurto, F. E. Mercader-Trejo, O. Auciello, A. Hurtado-Macias
Summary: This article analyzes the bandgap, optoelectronic properties, and complex dielectric function of Bi2Te3 thermoelectric material using Valence Electron Energy Loss Spectroscopy. The article highlights the novel use of this technique for characterizing these properties of Bi2Te3. The results show a bandgap of 0.91 eV and identify key features in the complex dielectric function.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Bartlomiej Salski, Piotr Czekala, Jerzy Krupka, Pawel Kopyt
Summary: A new method for measuring the moisture content and salinity of soil is proposed in this study, using the most accurate permittivity sensor at microwave frequencies. By comparing and extracting intrinsic properties, accurate results are obtained.
IEEE SENSORS JOURNAL
(2022)
Article
Mathematics, Applied
Subhajit Bera, Binod Chandra Tripathy
Summary: This article introduces the concepts of Cesaro convergence, Cesaro null, and Cesaro bounded sequences of bi-complex numbers defined by BC-Orlicz function with hyperbolic norm. The algebraic and topological properties of these sequences are investigated by defining a D-norm on these spaces. Inclusion results involving these sequence spaces are also established.
Article
Mathematics, Applied
F. Bagarello, F. Gargano
Summary: This paper demonstrates that the position and derivative operators can be treated as ladder operators connecting two biorthonormal families, and constructs bicoherent states.
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK
(2022)
Article
Engineering, Electrical & Electronic
Praveen Kumar Sharma, Navneet Gupta, Plamen I. Dankov
Summary: In this paper, a complete analysis of the complex dielectric constant of a flexible substrate from the silicon-based polymer- Polydimethylsiloxane (PDMS) is performed through two experimental methods, revealing uniaxial anisotropy and frequency dependencies. The temperature dependencies of the measured PDMS parameters are relatively strong, especially in the temperature range -30/+40 degrees C.
IEEE SENSORS JOURNAL
(2021)