Article
Materials Science, Multidisciplinary
Yong Zhang, Jian Yao, Zhen Zhang, Rong Zhang, Li Li, Yu Teng, Zongjie Shen, Lixing Kang, Limin Wu, Xiaosheng Fang
Summary: We report high-performance two-dimensional perovskite Pb 2 Nb 3 O 10 photodetectors (PNO PDs) for the first time. Few-layer PNO nanosheets were successfully obtained through a simple calcination and liquid exfoliation method. Individual PNO nanosheet devices with various structures (Au-PNOAu, Au-PNO-Ti, Ti-PNO-Ti) were fabricated and investigated. The Au-PNO-Ti device exhibited a high rectification factor and excellent self-powered performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Sourabh Wajhal, S. K. Mishra, A. B. Shinde, P. S. R. Krishna, R. Mittal
Summary: Correlated disorder in (1-x)NaNbO3-(x)BaTiO3 solid solution with Ca substitution has been studied, showing enhanced dielectric constant and the competition and cooperation between polar and antiferrodistortive mode. Powder neutron diffraction data reveals changes in diffraction peaks, suggesting a structural phase transition and extended phase stability of functional ferroelectric phase at lower temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Qijian Zhu, Mengqing Li, Yahong Jin, Zhibin Mei, Jinwei Gao, Jiansheng Huo, Qianming Wang
Summary: Double-perovskites have been studied for their potential in far-red luminescence applications involving Mn4+ encapsulation. Through compositional adjustments and equivalent cation substitutions, the emission intensity and thermal stability of these materials have been improved. Various doping ratios have been explored to understand the effects on the optical performance and crystal structure of the phosphors. Additionally, the concept of cation-substitution has shown promise in guiding the design of optoelectronic devices for applications such as LED plant growth systems.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Multidisciplinary Sciences
Md Wasikur Rahman
Summary: Magnesium based niobium oxides were prepared through solid-state reactions to investigate their function as promoters/catalysts. Different synthesis conditions were studied, revealing that Mg3Nb6O11 preferred reducing environment. The formation of MgNb2O6 was a single-step reaction with the lowest heat of formation, while Mg4Nb2O9 and Mg3Nb6O11 involved multistep reactions with higher heat of formation.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Yunyao Huang, Leiyang Zhang, Wenjing Shi, Qingyuan Hu, Vladimir Shur, Xiaoyong Wei, Li Jin
Summary: The properties of Pb(Mg1/3Nb2/3)O3-0.25PbTiO3 ferroelectric ceramics doped with rare-earth ions Sm3+ were studied. It was found that the addition of Sm3+ effectively lowers the temperature corresponding to maximum permittivity (Tm), resulting in enhanced relaxor ferroelectric (RFE) and electric field-induced strain properties at room temperature. Moreover, it was observed that the sample doped with 2.5 mol.% Sm3+ exhibited a large-signal equivalent piezoelectric coefficient (d*33) of 2376 pm/V and a small hysteresis.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Hongbin Yang, Andrea Konecna, Xianghan Xu, Sang-Wook Cheong, Eric Garfunkel, F. Javier Garcia de Abajo, Philip E. Batson
Summary: This study demonstrates the existence of relatively long-lived plasmons supported by high-mobility charge carriers in La-doped BaSnO3. The properties of infrared localized surface plasmons in BLSO nanoparticles are systematically investigated using electron energy-loss spectroscopy. The results show that LSPs in BLSO exhibit a high degree of spatial confinement compared to noble metals, and have relatively low losses and high quality factors. Further analysis clarifies the relation between plasmon damping and carrier mobility in BLSO.
Article
Materials Science, Multidisciplinary
Jesse Nii Okai Amu-Darko, Chen Zhang, Shahid Hussain, Eliasu Issaka, Samuel Leumas Otoo, Michael Freduah Agyemang, Esther Chioma Okoroafor
Summary: By adding Ba(Mg-(1/3) Nb-(2/3))O-3 (BMN) into Ba(Zr0.15Ti0.85)O-3 (BZT) ceramics, the dielectric and ferroelectric properties were improved, and the average grain size was reduced. The addition of BMN significantly affected the dielectric constant and temperature stability of the BZT ceramics.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Krishna Prajapati, Akhilesh Kumar Singh
Summary: In this paper, the crystal structures of a new solid solution (1 - x)Ba(Cu1/3Nb2/3)O-3-(x)PbTiO3 have been investigated at room temperature. Different crystallographic phases and phase coexistence regions have been discovered. The confirmation of the symmetry of these crystal structures has been done with the help of Rietveld analysis of the high-resolution XRD data.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Antranik Jonderian, Rui Peng, Danielle Davies, Eric McCalla
Summary: The effect of single partial substitutions on perovskite (Li-La-Ti-O) materials was studied, and it was found that certain substituents enable pure-phase perovskite. The best substitutions had minimal impact on bulk conductivity but induced minor enhancements in the grain boundary conductivity. Some substitutions also increased the electronic conductivity, making them good candidates for the electrolyte in all-solid-state batteries.
CHEMISTRY OF MATERIALS
(2023)
Article
Engineering, Chemical
Madhuri S. Patil, Narasimharao Kitchamsetti, Sameena R. Mulani, Sachin R. Rondiya, Nishad G. Deshpande, Ranjit A. Patil, Russell W. Cross, Nelson Y. Dzade, Kirankumar K. Sharma, Pramod S. Patil, Yuan-Ron Ma, Hyung Koun Cho, Rupesh S. Devan
Summary: The study successfully synthesized closely packed hexagonal 2D plates and clustered nanoparticle morphologies of BSTO perovskite using the polymerizable complex method. BSTO exhibited excellent photocatalytic degradation activity for various organic dyes, and the formation of surface radicals was revealed through first-principles DFT calculations and scavenging studies, suggesting its potential as a promising photocatalyst with better degradation efficiency.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Physics, Applied
Hao-Cheng Thong, Ben Xu, Ke Wang
Summary: This study investigates different types of domain walls in niobate-based ferroelectric perovskite KNbO3 using first-principles calculations, and finds that Nb-O hybridization plays a critical role in the formation and motion of domain walls.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Mengdi Cheng, Yangxi Yan, Zhimin Li, Pangpang Wang, Ri-ichi Murakami, Dongyan Zhang
Summary: This study investigates Pb(Ni, Nb)O-3-Pb(Lu, Nb)O-3-PbTiO3 piezoelectric ceramics, among which the 0.52PNN-0.16PLN-0.32PT ceramic exhibits the best performance (d(33) = 850 pC N-1, d(33)* = 1139 pm V-1). The excellent piezoelectricity can be attributed to multiphase coexistence and an enhanced local heterogeneous structure. Polar nanoregions that promote polarization rotation play a crucial role in achieving high piezoelectricity, as observed through SEM and PFM characterization. TEM analysis confirms the presence of a heterogeneous domain configuration with two coexisting phases. Additionally, the ceramic maintains a large signal piezoelectricity of 1000 pm V-1 in the temperature range of 20-90°C. This work showcases the achievement of both high piezoelectric properties and a good temperature range in relaxor ferroelectric ceramics.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Inorganic & Nuclear
Galina M. Kuz'micheva, Liudmila I. Ivleva, Irina A. Kaurova, Evgeny Khramov, Vladimir A. Lazarenko, Victor B. Rybakov, Yuri A. Fionov, Alexander Fionov
Summary: The crystal and local structures of Czochralski-grown calcium orthovanadate (Ca-3(VO4)(2)) single crystals doped with over-stoichiometric 0.05 wt % Mn2O3 (CVO:0.05Mn) and annealed under different conditions were studied. The research utilized single-crystal conventional and synchrotron X-ray diffraction, X-ray absorption spectroscopy, and electron paramagnetic resonance techniques. It was found that the bottom and top parts of the CVO:0.05Mn crystal differed in terms of manganese content, formal charge, and color, depending on the post-growth treatment conditions.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Min Ju Jeong, Kyung Mun Yeom, Se Jin Kim, Eui Hyuk Jung, Jun Hong Noh
Summary: By incorporating gallium(iii) acetylacetonate into organic hole-transporting materials without additional surface treatment processes, the interface engineering strategy efficiently reduces the recombination loss and enhances the performance of perovskite solar cells. This method significantly improves the power conversion efficiency of PSCs and maintains stability without hygroscopic additives, showing a promising route for high performance and commercialization.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Physics, Applied
V Werner, J. Schoiber, G. J. Redhammer, T. Berger, S. Pokrant
Summary: Photoelectrochemical water-splitting with Ti-site substitution in LaTi(O,N)(3) leads to improved photocurrent density, linked to reduced (crystalline) defects at low substitution levels. However, excessive Nb doping may decrease charge carrier density, underscoring the importance of carefully tuning synthesis conditions for optimal performance.
APPLIED PHYSICS LETTERS
(2021)
