Article
Chemistry, Multidisciplinary
Iulia Cojocariu, Matteo Jugovac, Sidra Sarwar, Jeff Rawson, Sergio Sanz, Paul Koegerler, Vitaliy Feyer, Claus Michael Schneider
Summary: This article explores the unique optoelectronic properties of organic p-n junctions in the field of molecular electronics by adjusting the fluorination level in metal-supported bilayered Pc-based structures, with potential application in photovoltaic devices.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jesi R. Maguire, Conor J. Mccluskey, Kristina M. Holsgrove, Ahmet Suna, Amit Kumar, Raymond G. P. Mcquaid, J. Marty Gregg
Summary: We have used high-voltage Kelvin probe force microscopy to map the electrical potential distribution along curved current-carrying conducting domain walls in ferroelectric lithium niobate thin films. We found that the potential profiles and electric fields can be explained by variations in wall resistivity alone, without invoking additional physical phenomena. This is important for domain-wall nanoelectronics.
Article
Physics, Applied
Zhenwei Wang, Takahiro Kitada, Daiki Takatsuki, Jianbo Liang, Naoteru Shigekawa, Masataka Higashiwaki
Summary: In this study, p-Si/n-Ga2O3 and p(+)-Si/n-Ga2O3 heterostructures were fabricated using surface-activated bonding technique, and their electrical properties were investigated. Current density-voltage measurement before and after thermal annealing at 450 ? showed a significant increase in current density after annealing, which was attributed to thinning of the intermediate layer formed during the bonding process. Distinctive two-stage capacitance-voltage characteristics were observed for p-Si/n-Ga2O3 heterostructures, and numerical calculation considering the effect of two-dimensional electron gas formed at the heterointerface reproduced these characteristics well. These results indicate that Ga2O3-based p-n heterostructures with good interface properties and large-area uniformity can be fabricated using surface-activated bonding.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Multidisciplinary
Kousik Samanta, Jean C. Souza, Danilo Rigitano, Adimir I. Morales, Pascoal G. Pagliuso, Eduardo Granado
Summary: This study investigates the resistive and Raman scattering properties of Co-doped Sr2IrO4 and provides evidence for quantum critical fluctuations in the system.
COMMUNICATIONS PHYSICS
(2021)
Article
Physics, Multidisciplinary
Yucheng Jiang, Xinglong Ma, Lin Wang, Jinlei Zhang, Zhichao Wang, Run Zhao, Guozhen Liu, Yang Li, Cheng Zhang, Chunlan Ma, Yaping Qi, Lin Wu, Ju Gao
Summary: In this study, the interfacial polarization hysteresis (IPH) is reported in vertical sidewall van der Waals heterojunctions of black phosphorus and quasi-two-dimensional electron gas on SrTiO3. Nonvolatile switching of electric polarization can be achieved by reconstructing the space charge region. The electric-field controllable IPH is experimentally verified and transitions at temperatures of 340 K and 230 K are observed.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
Guangyao Ma, Yanli Zhou, Yingying Wang, Zhenyu Feng, Jian Yang
Summary: The layer-structured MoS2 on N, P-codoping reduced graphene oxide (MoS2/N, P-rGO) shows superior performance as an anode material for potassium ion batteries, with high specific capacity, outstanding rate capability, and excellent cycle life. The K-storage reactions of MoS2/N, P-rGO are dominated by pseudo-capacitance, as confirmed by kinetics analysis.
Article
Nanoscience & Nanotechnology
Eric S. Thompson, Hiro Gangi, Jongil Hwang, Thomas J. Kempa
Summary: The study presents a parallel process for the rapid synthesis of nanoscale Si superlattices, where high-quality single-crystal Si slabs are grown in a bottom-up manner with growth rates exceeding 500 nm/min. The fabricated superlattice of Si p-n junctions achieved phosphor dopant levels approaching 1 X 10(20) atoms/cm(3), demonstrating a unique opportunity for the rapid fabrication of high-quality nanoscale semiconductor superlattices and devices.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Jiarong Yao, Xinzi Tian, Shuyuan Yang, Fangxu Yang, Rongjin Li, Wenping Hu
Summary: A one-step solution crystallization strategy was proposed to prepare high-quality bilayer p-n heterojunctions, with clear interfaces, leading to high mobility values for both holes and electrons. This strategy could potentially be applied in high-performance optoelectronic devices.
Article
Chemistry, Multidisciplinary
Yuwei Guan, Chunhuan Zhang, Zhen Liu, Yiman Zhao, Ang Ren, Jie Liang, Fengqin Hu, Yong Sheng Zhao
Summary: Single-crystalline perovskite p-n junction nanowire arrays are demonstrated as ultra-sensitive photodetectors, which possess high crystallinity for efficient carrier transport and form built-in electric fields facilitating effective carrier separation. These results provide new insights into the design and construction of high-performance photodetectors for practical optoelectronic applications.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Zunhang Lv, Kaihang Wang, Yingying Si, Zihan Li, Tianpeng Yu, Xin Liu, Guixue Wang, Guangwen Xie, Luhua Jiang
Summary: By judiciously engineering the electrocatalysts, the researchers successfully designed a Co-P/Ni-Fe-P/NF electrode with excellent electrocatalytic activity for hydrogen evolution reaction in alkaline medium. The electrode exhibited a low overpotential of 43.4 mV at 10 mA cm-2 and demonstrated long-term stability for 72 hours. This innovative work may contribute to further development of commercial electrocatalysts.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Physical
Pengna Wang, Ying Sun, Jie Li, Guanqun Zhu, Xueqin Zhang, Hong Yang, Baoping Lin
Summary: Novel monomer TPACz containing carbazole and triphenylamine active groups was synthesized, and P(TPACz)/WO3 coralloid porous electrochromic electrode material was prepared. The material exhibited independent electrochromic properties in different potential ranges and showed both n-type and p-type doped electrochemical properties. Additionally, it demonstrated excellent capacitive properties in specific potential windows.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Hsin-Jung Tsai, Ling-Hung Chou, Ping-Chun Chen, Yung-Kai Yang, Wen-Kuang Hsu
Summary: Conductive papers made from carbon nanotubes and wood fibers exhibit p-type characteristics. N2 plasma treatment can convert the paper into n-type, verified through elemental analyses, work function and Hall-effect measurements. By treating one face of the p-type paper in plasma, p-n junctions can be created along the thickness direction, and electrical rectification is observed through current-voltage measurements.
Article
Engineering, Electrical & Electronic
Dan Zhang, Chaochao Fu, Jing Xu, Chao Zhao, Jianfeng Gao, Yaodong Liu, Menghua Li, Junfeng Li, Wenwu Wang, Dapeng Chen, Tianchun Ye, Dongping Wu, Jun Luo
Summary: This paper discusses the method of using dopant segregation technique to adjust the Schottky barrier heights of NiSi/Si diodes, and presents a technique to distinguish different types of diodes.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Inorganic & Nuclear
Taya Ko Saothayanun, Rattanawadee Ploy Wijitwongwan, Makoto Ogawa
Summary: In this work, a hybrid photocatalyst composed of layered cesium titanate and bismuth oxyiodide was designed based on lattice matching. The hybrid exhibited efficient photodegradation activity due to the efficient charge transfer and the high activity of (001) BiOI.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Shi Fang, Liuan Li, Weiyi Wang, Wei Chen, Danhao Wang, Yang Kang, Xin Liu, Hongfeng Jia, Yuanmin Luo, Huabin Yu, Muhammad Hunain Memon, Wei Hu, Boon S. Ooi, Jr-Hau He, Haiding Sun
Summary: This research reports a bipolar-junction photoelectrode with a gallium nitride (GaN) p-n homojunction nanowire array, operating in electrolyte, and demonstrating bipolar photoresponse controlled by different wavelengths of light. By rationally decorating the nanowires with a ruthenium oxide (RuOx) layer, guided by theoretical modeling, the resulting RuOx/p-n GaN photoelectrode exhibits significantly boosted bipolar photoresponse compared to the pristine nanowires. The loading of the RuOx layer optimizes surface band bending, promotes charge transfer, and enhances the efficiency of redox reactions, leading to improved positive and negative photocurrents. Lastly, a dual-channel optical communication system is constructed using only one photoelectrode to decode encrypted dual-band signals.
ADVANCED MATERIALS
(2023)