Article
Nanoscience & Nanotechnology
Chuanliang Wang, Jinyang Cai, Xiaoqi Liu, Chunfeng Chen, Xiaoke Chen, Khadga Jung Karki
Summary: This study presents a simple and sensitive method based on the phase modulation of femtosecond pulses to quantify single-, two-, and three-photon absorptions in GaP and InGaN photodetectors. The results show that only three-photon absorption contributes to the photocurrent in the InGaN device when excited by femtosecond pulses at 1030 nm. On the other hand, single-, two-, and three-photon absorptions have comparable contributions in the GaP detector. Additionally, the method can be used to image the heterogeneity of multiphoton photocurrent in devices.
Article
Materials Science, Multidisciplinary
Nixian Qian, Chunhua Chen, Yonghui Zhou, Shuyang Wang, Liangyu Li, Ranran Zhang, Xiangde Zhu, Yifang Yuan, Xuliang Chen, Chao An, Ying Zhou, Min Zhang, Xiaoping Yang, Zhaorong Yang
Summary: Pressure engineering in semiconductors has led to the discovery of various novel physical phenomena. This study reports on the observation of pressure-induced superconductivity in III-V gallium phosphide (GaP) and the correlation with piezochromic transition and metallization. The emergence of superconductivity is attributed to a structural transition from cubic to orthorhombic phase. The critical temperature (Tc) of superconductivity decreases monotonically with increasing pressure up to approximately 50 GPa. The structural transition is irreversible, allowing the superconductivity to be preserved towards ambient pressure. However, the superconducting transition displays broadening associated with amorphization in the depressurized sample. The co-evolution of structural and electronic properties not only reveals a vivid structure-property relationship but also offers opportunities for exploring novel functionalities through pressure treatment.
NPG ASIA MATERIALS
(2023)
Article
Physics, Applied
Khushboo Dange, Rachana Yogi, Alok Shukla
Summary: In this study, we use computational methods based on density functional theory to investigate the structural stability, electronic, magnetic, and optical properties of pristine and doped gallium phosphide (GaP) monolayers. By doping, we observe a transition from an indirect to direct band gap and significant changes in the band gap for some cases. Our study also reveals the possibility of spin-dependent optical properties and the potential for engineering half metallicity by doping. Additionally, we find that the doped GaP monolayer has a wide range of potential applications in nanoelectronics, spintronics, optoelectronics, solar cells, etc.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Condensed Matter
Qingyang Fan, Bingqian Hao, Fang Yang, Yanxing Song, Xinhai Yu, Sining Yun
Summary: This study investigates the crystal structure, stability, mechanical properties, electronic properties, effective masses, and optical properties of Si-Ge alloys in the P-3m1 phase. The results show that these alloys have mechanical and dynamic stability, with anisotropic mechanical and transport properties under varying Ge compositions. The materials exhibit promising characteristics for photovoltaic applications.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Chemistry, Multidisciplinary
A. S. Oreshonkov, N. O. Azarapin, N. P. Shestakov, S. Adichtchev
Summary: BaLaCuS3 powder was prepared by the sulphidation method, with irregularly shaped particles ranging in size from 10-100. Using the DFT method, the electronic, elastic, and vibrational properties were evaluated, revealing BaLaCuS3 to be a direct wide band gap semiconductor with promising potential for efficient underwater solar cells. The calculated compressibility of BaLaCuS3 is similar to the germanium and zinc blende modification of zinc sulfide.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Le Chen, Jiawei Sun, Junwu Liang, Zhengfang Qian, Xiangyu Dai, Xun Sun, Xiang Lv
Summary: In this paper, the electronic band structures, optical properties, and phonon spectrum of monolayer antimony are investigated. The results show that monolayer antimony exhibits the properties of a wide band-gap semiconductor with adjustable band gap value by applying pressure. Furthermore, it undergoes a transition from a semiconductor to a conductor at a critical pressure, where the band gap is tuned to zero. These findings provide opportunities for band gap tunability and semiconductor-to-metal transition by mechanical pressure, and potential applications in sensors and switches.
Article
Materials Science, Multidisciplinary
Joshua Leveillee, Xiao Zhang, Emmanouil Kioupakis, Feliciano Giustino
Summary: In the past decade, ab initio computational methods have been developed to accurately calculate phonon-limited carrier mobilities in semiconductors. This paper investigates the effect of ionized-impurity scattering on carrier mobility by modeling impurity potential from first principles, and demonstrates the methodology using silicon, silicon carbide, and gallium phosphide. The calculations show good agreement with experimental data and provide insights into the relative importance of electron-phonon scattering and ionized-impurity scattering.
Article
Chemistry, Physical
Hao Liu, Jia Wang, Guozhao Zhang, Yonghao Han, Baojia Wu, Chunxiao Gao
Summary: The high pressure significantly affects the electrical properties of GaP, leading to a drastic decrease in resistance and a weakening of electron localization which results in an increased polarization. After the phase transition, both the polarization and the relative permittivity decrease.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Lisette R. Warren, Evana McGowan, Margaret Renton, Carole A. Morrison, Nicholas P. Funnell
Summary: The research demonstrates that the color in the ROY family's ON crystal structure originates from intermolecular interactions, leading to significant color changes under pressure.
Article
Physics, Applied
A. S. Gudovskikh, A. Baranov, A. Uvarov, D. A. Kudryashov, J-P Kleider
Summary: This study explores the behavior of microcrystalline gallium phosphide (GaP)/Si multilayer structures grown on GaP substrates using plasma enhanced atomic layer deposition (PE-ALD) and plasma-enhanced chemical vapor deposition techniques. Capacitance versus voltage (C-V) profiling, admittance spectroscopy (AS), and deep level transient spectroscopy (DLTS) were employed to investigate the electronic properties of the Schottky barriers formed on the GaP/Si multilayer structures. The results reveal electron accumulation in the Si/GaP wells, with C-V profiling providing qualitative information. However, the frequency dependence of the capacitance limits quantitative determination of the electron concentration and spatial distribution in the wells. AS and DLTS measurements show signatures with activation energies related to the energy barrier at the GaP/Si interface. The AS result corresponds to the conduction band offset at the GaP/Si interface, whereas DLTS probes wells located closer to the Schottky interface. Additionally, DLTS identifies defect levels in GaP, including the Si-Ga + V-P complex and a previously detected defect in single microcrystalline GaP layers grown by PE-ALD.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Nanoscience & Nanotechnology
Titao Li, Wei Zheng, Siqi Zhu, Fei Wang, Yanming Zhu, Lemin Jia, Zeguo Lin, Feng Huang
Summary: (AlxGa1-x)(2)O-3 is a promising wide-band-gap sesquioxide for VUV photodetectors and high-power field-effect transistors. This study proposed a high-pressure O-2 (20 atm) annealing strategy to improve the crystallinity of beta-(AlxGa1-x)(2)O-3 and achieve a tunable optical band gap, revealing the local structure of Al3+ and the kinetic mechanism of Al3+ diffusion. The combination of HPOA-treated beta-(Al0.69Ga0.31)(2)O-3 films with p-type graphene led to the fabrication of a VUV photovoltaic detector with improved photovoltage and fast temporal response, providing an important strategy for enhancing the band-gap tunability of sesquioxides and zero-power-consumption photodetectors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Physics, Applied
Yifan Ye, Hongyang Su, Kyung-Jae Lee, David Larson, Carlos Valero-Vidal, Monika BIum, Junko Yano, Ethan J. Crumlin
Summary: This study utilized ambient pressure x-ray photoelectron spectroscopy to analyze the surface chemistry of GaP in the presence of CO2 and H2O under different lighting conditions, revealing the adsorption and activation processes of CO2 on the GaP surface. The results showed the stable configuration of CO2 on GaP surface and the influence of different conditions on the adsorption mechanism.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Chioma Vivian Ezeh, Kingsley O. Egbo, Jamaal-Deen Musah, Kin Man Yu
Summary: Gallium oxide (Ga2O3) has attracted significant interest for its wide bandgap and unique properties. Researchers have successfully modified the electronic bands of Ga2O3 through alloying with NiO to achieve p-type conducting Ga2O3-NiO thin films. The films exhibited different structural properties and optical behaviors depending on the Ni content. The p-type alloy films with a high concentration of Ni vacancies showed a wide tunability of bandgap and sub-gap absorption.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Coatings & Films
Nima Nateghi, Remo A. Masut
Summary: The textures and properties of GaP:MnP/GaP(001)epilayers and (p-c)MnP/GaP (001)films grown on GaP substrates were studied. Heterostructures containing multiple layers of (p-c)MnP/GaP and of GaP:MnP/GaP were designed and grown to further understand the growth mechanisms of these complex systems. It was found that Mn diffusion during growth was strongly enhanced, with the diffusion coefficient and the characteristics of superdiffusion being investigated.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Article
Computer Science, Information Systems
Riccardo Rossi, Roberto Vincenti Gatti
Summary: In this article, an X-band H-plane groove gap waveguide magic-T is presented, and two architectures can be derived by orientating the sum and difference ports. Slot coupling allows for the reduction of device dimensions along the E-plane, making it attractive for compact groove gap waveguide applications.
Article
Nanoscience & Nanotechnology
Deborah Ogulu, Pranjal P. Bora, Manisha Bihani, Sudripet Sharma, Tharique N. Ansari, Andrew J. Wilson, Jacek B. Jasinski, Fabrice Gallou, Sachin Handa
Summary: Phosphine ligand-free bimetallic nanoparticles catalyze highly selective reductions of various substrates under aqueous micellar conditions without impacting other functional groups. Multiple analysis methods provide evidence of metal-micelle binding and information about the morphology and chemical composition of the nanoparticles.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
William Arnold, Varun Shreyas, Yang Li, Milinda Kalutara Koralalage, Jacek B. Jasinski, Arjun Thapa, Gamini Sumanasekera, Anh T. Ngo, Badri Narayanan, Hui Wang
Summary: Solid-state lithium metal batteries with novel solid electrolytes have the potential for high energy density and safety. Sulfide-based argyrodite-class solid electrolytes are attractive due to their excellent ionic conductivity. This study synthesized F-doped argyrodites with dual dopants using a solvent-based approach and found that Li6PS5F0.5Cl0.5 exhibited the highest Li-ion conductivity and cycling performance at room temperature. The enhanced interfacial stability of Li6PS5F0.5Cl0.5 was attributed to the formation of a stable solid electrolyte interphase containing conductive species.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
Mohammad Shahinur Rahaman, Sarttrawut Tulaphol, Md Anwar Hossain, Jacek B. Jasinski, Ning Sun, Anthe George, Blake A. Simmons, Thana Maihom, Mark Crocker, Noppadon Sathitsuksanoh
Summary: The study developed a dual acid phosphotungstic acid-encapsulated MOF catalyst for efficient conversion of biomass-derived glucose to 5-hydroxymethylfurfural. The catalyst design improved HMF selectivity and stability, providing insights for the design of new bifunctional solid acid catalysts.
Article
Chemistry, Physical
Mohammad Shahinur Rahaman, Sarttrawut Tulaphol, Anwar Hossain, Jacek B. Jasinski, Shashi B. Lalvani, Mark Crocker, Thana Maihom, Noppadon Sathitsuksanoh
Summary: Aluminum-containing metal-organic frameworks (Al-MOFs) show activity, selectivity, stability, and reusability for glucose isomerization in ethanol. Al-MOFs achieved high fructose selectivity at high glucose conversion, and the catalyst is stable and can be reused at least four times.
Article
Engineering, Environmental
Yang Li, Selim Halacoglu, Varun Shreyas, William Arnold, Xiaolin Guo, Qianqian Dou, Jacek B. Jasinski, Badri Narayanan, Hui Wang
Summary: This study demonstrates the use of an ionic liquid interlayer to address interfacial issues in sulfide-based solid-state sodium batteries (SSSBs). The interlayer stabilizes the Na metal/SSE interface, enabling the formation of a stable solid electrolyte interphase (SEI) and preventing harmful reactions and Na dendrite growth. Experimental and simulation results reveal that the stable SEI is composed of reduced products of TFSI-. Symmetric cells and FeS2||Na quasi-solid-state batteries exhibit stable cycling performance and high specific capacity.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Ali Alzahrani, Milinda Kalutara Koralalage, Jacek Jasinski, Gamini Sumanasekera
Summary: A lithography-free approach was developed to directly manufacture two-dimensional material-based double barrier tunnel junctions, and the DB junctions with varying barrier widths were studied. The resonant tunneling behavior of the tunneling current was observed and explained using a quantum mechanical double barrier tunneling model.
ELECTRONIC MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Sudripet Sharma, Saurav Parmar, Faisal Ibrahim, Adam H. Clark, Maarten Nachtegaal, Jacek B. Jasinski, Fabrice Gallou, Pawel M. Kozlowski, Sachin Handa
Summary: In this study, a nanomaterial containing amphiphile-stabilized mononuclear Cu(II) is developed and characterized using various spectroscopic techniques. The binding mode of the amphiphile to the Cu surface is determined through theoretical modeling and experimental data analysis. It is found that the Cu(II) can be converted to catalytically active Cu(I) species upon visible light irradiation, and the resulting catalyst shows stability for up to three months in water, making it suitable for domino reactions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Electrochemistry
Nicholas David Schuppert, Santanu Mukherjee, Jacek B. Jasinski, Bijandra Kumar, Ayodeji Adeniran, Sam Park
Summary: In this study, a cost-effective aqueous rechargeable battery based on MoS2 is proposed, and the performance and cost-effectiveness of the lithium-ion battery are significantly improved by exfoliation and composite technology.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Usman O. Abu, Sharmin Akter, Bimal Nepal, Kathryn A. Pitton, Beth S. Guiton, Douglas R. Strachan, Gamini Sumanasekera, Hui Wang, Jacek B. Jasinski
Summary: This study presents a facile and straightforward method to synthesize phosphorene nanoribbons with good uniform widths via an electrochemical process in black phosphorus, demonstrating novel electronic properties. This approach is of significant importance for the preparation of narrow width structures.
Article
Nanoscience & Nanotechnology
Gaganpreet Kaur, Jacek B. Jasinski, Fabrice Gallou, Sachin Handa
Summary: A novel strategy has been developed to spontaneously form ligand-free Pd(0) nanoparticles from water- and air-sensitive Pd(2)dba(3) in water. These naturally formed NPs are more efficient than synthetic NPs formed under a hydrogen atmosphere and traditional NPs formed using the air-sensitive Grignard reagent.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Sudripet Sharma, Jacek B. Jasinski, Wilfried M. Braje, Sachin Handa
Summary: A simple and environmentally friendly method for synthesizing nanoparticles on the surface of the food additive HPMC and their application in organic solvent-free cycloaddition reactions were reported. The method showed high efficiency and the obtained products were of high purity.
Article
Energy & Fuels
Arjun Kumar Thapa, Brandon W. Lavery, Ram K. Hona, Nawraj Sapkota, Milinda Kalutara Koralalage, Ayodeji Adeniran, Babajide Patrick Ajayi, Muhammad Akram Zain, Hui Wang, Thad Druffel, Jacek B. Jasinski, Gamini U. Sumanasekera, Mahendra K. Sunkara, Masaki Yoshio
Summary: This article introduces a synthesis strategy for high-rate NMC cathodes, specifically LiNi0.2Mn0.6Co0.2O2 (NMC262), which exhibit high discharge capacities and excellent rate capabilities.
Article
Chemistry, Analytical
Prasadanie K. Adhihetty, Sujoy Halder, Jacek B. Jasinski, Xiao-An Fu, Michael H. Nantz
Summary: This article explores the non-covalent interactions between cations and z-systems and demonstrates their potential use as a sensing mechanism for detecting aromatic volatile organic compounds (VOCs). The results suggest that cation-z interactions could be a promising avenue for developing selective sensors for aromatic VOCs.
Article
Engineering, Chemical
Usman O. Abu, Dinushika Vithanage, Ashan Vitharana, Jacek B. Jasinski, Gamini Sumanasekera
Summary: This study investigates the effects of oxygen and humidity on black phosphorous (BP) and black arsenic phosphorous (AsxP1-x) flakes using Raman spectroscopy and in situ electric transport measurements. The results show that the incorporation of arsenic into the lattice of BP renders it more stable, with the degradation times increasing with arsenic concentration. Exposure to oxygen and moisture leads to decreased Raman peak intensities. Both BP and AsxP1-x are confirmed to be p-type semiconductors, with the thermoelectric power stabilizing more slowly for AsxP1-x compared to BP. The four-probe resistance stabilizes faster when exposed to air after being degassed in a vacuum due to charge transfer between oxygen redox potential and the Fermi energy of the semiconductors.
Article
Materials Science, Multidisciplinary
Sonia Juliana Calero-Barney, Antonis N. Andriotis, Madhu Menon, Mahendra Sunkara
Summary: Single crystal quality films of dilute GaSbxN1-x and GaBiyN1-y alloys were synthesized through a plasma-assisted vapor liquid phase epitaxy technique. The alloys possess gallium nitride wurtzite structure with slightly higher lattice parameter compared to pure gallium nitride. The substitution of anions in the alloy at the reported levels does not lead to significant changes in the band gap.
