Review
Materials Science, Multidisciplinary
Rajiv Kumar Pandey, Jit Dutta, Sanjaya Brahma, Bruno Rao, Chuan-Pu Liu
Summary: ZnO is a popular piezoelectric material due to its easy preparation and exceptional semiconductor characteristics. However, the screening effect caused by intrinsic free carriers hinders ZnO from achieving high output voltages in piezoelectric devices. Understanding and mitigating this effect is crucial for the development of ZnO-based piezotronics and piezoelectric nanogenerators.
JOURNAL OF PHYSICS-MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
E. Aldirmaz, M. Guler, E. Guler
Summary: In this study, a Schottky diode was produced using Fe69Ni27Mn4 alloy on a p-type Si semiconductor. The structural, crystallographic, thermal, and electrical properties of the diode were examined. It was found that the diode exhibits negative capacitance behavior, making it suitable for sensor applications in optoelectronics.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Polymer Science
Yuki Hashimoto
Summary: A new bonding method using vacuum ultraviolet (VUV) light with a wavelength shorter than 160 nm is proposed. The results of surface analysis and bonding tests confirm that this method can bond different materials, which has not been reported before.
Article
Materials Science, Multidisciplinary
Fikriye Seyma Kaya, Songul Duman, Ikram Orak, Ozlem Baris
Summary: In this study, Au/n-GaP/Al and Au/chlorophyll-a/n-GaP/Al structures were fabricated using n-type GaP semiconductor. The performance characteristics of these structures were analyzed using SEM, I-V measurements, and C-V measurements, revealing that the chl-a thin film has an impact on the photovoltaic parameters of the Au/n-GaP/Al structure.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
D. E. Yildiz, S. Karadeniz, H. H. Gullu
Summary: In this study, a metal-semiconductor diode in the form of Au/4H-SiC was fabricated and its electrical properties were systematically examined under different illumination intensities. It was found that the performance parameters of the diode are illumination dependent, with a dominant Poole-Frenkel mechanism in the reverse biased region. The fabricated Au/4H-SiC Schottky diode showed a strong photo-current response to different illumination intensities, making it suitable for optoelectronic applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Green & Sustainable Science & Technology
Benyounes Raillani, Dounia Chaatouf, Mourad Salhi, Samir Amraqui, Ahmed Mezrhab
Summary: This paper investigates the soiling mitigation of a ground-mounted photovoltaic panel using numerical methods. The results show that the addition of a wind barrier can reduce the particle deposition rate on the panel, and gravity has a significant effect on the behavior of dust particles.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Materials Science, Multidisciplinary
F. S. Cuesta, M. S. Mirmoosa, S. A. Tretyakov
Summary: One advantage of reciprocal bianisotropic metasurfaces is their ability to produce asymmetric scattering depending on the illumination side and circular polarization. However, we demonstrate that geometrical asymmetry can be emulated using nonbianisotropic layers in coherent illumination, enabling optical control of desired asymmetric scattering and chirality effects. We illustrate this concept by emulating asymmetric scattering required for creating a 180 degrees hybrid junction for plane waves using either a bianisotropic metasurface or simple sheets with electric response under simultaneous illumination by two coherent waves.
Article
Nanoscience & Nanotechnology
Jin Zhang, Yao Du
Summary: In this paper, the fatigue behaviors of defective gallium nitride nanowires under cyclic loading were investigated using molecular dynamics simulations. The results showed that nanowires with smaller defect concentration or lower fatigue load amplitude had longer fatigue life. Reducing the defect concentration significantly increased the ultimate fatigue strain of the nanowires. The material parameters and piezopotential properties of the nanowires remained almost unchanged during the fatigue process.
Article
Chemistry, Multidisciplinary
Jianping Meng, Qi Li, Jing Huang, Zhou Li
Summary: The Schottky barrier height can be tuned with the voltage from a triboelectric nanogenerator, leading to increased performance. The electric field generated by the impulse voltage of the TENG drives the diffusion of ionized oxygen vacancies to accumulate at the interface and alter the band structure.
Article
Nanoscience & Nanotechnology
Wei Li, Qingrui Jia, Hongjiao Dong, Zi'ang Wang, Yucheng Wang, Yupan Wu, Xiaodong Zhao, Zhao Chen, Shaoxi Wang
Summary: Compared to traditional materials, two-dimensional transition metal dichalcogenides (2D TMDCs) have potential applications in low power logic, photoelectric, and nonvolatile memory devices. This study focuses on the use of ReS2 as the channel material and BN as the gate dielectric. The results demonstrate that ReS2 devices, with or without BN, exhibit outstanding photoresponsivity and fast photoresponse time under extremely low optical power density. Furthermore, the influence of ReS2 channel thickness on mobility and photoresponsivity was also investigated.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Nanda Kumar Reddy Nallabala, S. V. Prabhakar Vattikuti, V. K. Verma, V. R. Singh, Salh Alhammadi, Venkata Krishnaiah Kummara, V Manjunath, M. Dhanalakshmi, Vasudeva Reddy Minnam Reddy
Summary: A cost effective and highly sensitive ultraviolet photodetector with good rectification performance and wavelength selectivity was fabricated at room temperature. The device showed bias-dependent spectral responses and time-dependent photoresponse characteristics, with the optimum performance observed at a wavelength of 365 nm. Through measurements of current-voltage characteristics and photoresponsivity under different wavelength illuminations, the detector's performance at 365 nm wavelength was found to be the best.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Kun Cao, Guanyi Gong, Xiangyang Guo, Yanling He, Francis Chi Chung Ling, Wanyin Ge, Alan Man Ching Ng, Yongxiang Li, Jerry Yu
Summary: High precision nanorod based surface morphologies can simulate the function of sensory hairs with nanotechnology. The unique gas sensitive I-V characteristics of these surfaces require initialisation under voltage bias and temperature elevation to exploit their band structures and achieve optimal gas response. Optimising nanorod based sensors with effective approaches can provide efficient control to downsize and miniaturise current gas sensors. By using ultraviolet photoelectron spectroscopy (UPS), specific band structure parameters can be extracted to determine the optimal sensor initialisation bias. The results validate the correlation between the fabricated nanostructured Schottky barrier heights obtained from UPS data and their I-V data, and also demonstrate the experimental validity of the proposed band structure. The optimal biasing condition of 0.8 V is determined for Au-ZnO nanorod hydrogen gas sensory operation at 150 degrees C, and the gas response data exhibit exponential dependence with gas concentration, which is highly relevant for programmable trigger response controlled sensing function based applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Jin Zhang
Summary: This study investigates the mechanical behaviors and piezopotential properties of zinc oxide (ZnO) nanowires under lateral bending, revealing significant changes in piezopotential distribution due to phase transformations.
Article
Chemistry, Physical
Bo Zhang, Yongsheng Li, Yongji Chen, Haibiao Chen, Chen Zhu, Jian Liu, Yuan Lin, Feng Pan
Summary: The efficiency of silicon solar cells is improved by optimizing the aluminum-back surface field (Al-BSF) using MoO3 as an additive for the back contact.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Bo Zhang, Yongsheng Li, Yongji Chen, Haibiao Chen, Chen Zhu, Jian Liu, Yuan Lin, Feng Pan
Summary: In this study, the addition of MoO3 to the back contact of crystalline silicon solar cells is shown to optimize the performance by reducing resistance and increasing photoelectric conversion efficiency.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Xin Wang, Jing Wu, Yuwei Zhang, Yu Sun, Kaikai Ma, Yong Xie, Wenhao Zheng, Zhen Tian, Zhuo Kang, Yue Zhang
Summary: Vacancy defect engineering has been widely used to shape the physicochemical properties of diverse catalysts. This review provides a comprehensive understanding of vacancy engineering in 2D TMDs-based electrocatalysis, covering its background, manufacturing, characterization, and application in the hydrogen evolution reaction. The review also explores the correlations between specific vacancy regulation routes and catalytic performance improvement, and discusses the future prospects of vacancy engineering in advanced defect catalysts.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yunhai Xiong, Duo Xu, Yiping Feng, Guangjie Zhang, Pei Lin, Xiang Chen
Summary: 2D semiconductors, with their superior carrier mobility and gate-control capability at atomic thickness, are considered as one of the best options to extend Moore's law. However, reliable p-type 2D semiconductors with majority carriers of holes are still scarce. This article reviews the material toolkit, synthesis strategies, device basics, and digital electronics related to p-type 2D semiconductors, and discusses their opportunities, challenges, and prospects for future electronic applications.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Xiankun Zhang, Yanzhe Zhang, Huihui Yu, Hang Zhao, Zhihong Cao, Zheng Zhang, Yue Zhang
Summary: As silicon-based electronic devices face challenges of material performance decrease and interface quality degradation, ultrathin 2D materials are considered as potential candidates in future electronics due to their atomically flat surfaces and excellent immunity to short-channel effects. By freely stacking and forming high-quality heterostructure interfaces, all-2D electronics based on 2D van der Waals (vdW) interfaces can exhibit more comprehensive functionality and better performance. However, improving the compatibility of 2D material devices with silicon-based industrial technology remains a critical challenge.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chenzhe Xu, Suicai Zhang, Wenqiang Fan, Feiyu Cheng, Haochun Sun, Zhuo Kang, Yue Zhang
Summary: By modifying the interface molecules for CsPbI3 perovskite, the electron transfer barrier is reduced and the crystal quality is improved, resulting in a decrease of trap-assisted charge recombination and interfacial energetic loss. As a result, the devices achieve an impressive efficiency of 20.98% and a record-low V-OC deficit of 0.451 V.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jinjin Hei, Xue Li, Shuoen Wu, Pei Lin, Zhifeng Shi, Yongtao Tian, Xinjian Li, Longhui Zeng, Xuechao Yu, Di Wu
Summary: Conventional methods of chemical vapor deposition and mechanical exfoliation fail to meet the demands for integrated optoelectronics and systems. Therefore, we propose a simple selenization approach to grow wafer-scale 2D p-WSe2 layers with high uniformity and customized patterns. The fabricated self-driven broadband photodetector exhibits high responsivity, large specific detectivity, and remarkable nanosecond response speed.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Jiayi Sun, Xuan Zhao, Haonan Si, Fangfang Gao, Bin Zhao, Tian Ouyang, Qi Li, Qingliang Liao, Yue Zhang
Summary: In this study, CsPbBr2I quantum dots (CQDs) with surface modulation were used to fabricate high-detectivity and stable photodetectors. The surface modulation not only passivates defects and inhibits vacancies, but also enhances hole transport capacity by modulating energy level mismatch. The assembled CsPbBr2I photodetectors demonstrated a responsivity of 0.375 A W-1, a detectivity of 1.12 x 10(13) Jones, and an on/off ratio of 10(4). Furthermore, the CsPbBr2I photodetectors exhibited excellent long-term stability for 12 weeks and could withstand 1000 bending cycles. This work provides a guideline for the development of perovskite in wireless optical communication.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Wang Zhang, Wencong He, Shuge Dai, Fuxue Ma, Pei Lin, Junlu Sun, Lin Dong, Chenguo Hu
Summary: Effective strategies for harvesting and converting hydrogen energy from ocean energy are gaining widespread attention in the field of new energy sources. The triboelectric nanogenerator (TENG) shows promising potential for extracting large-scale blue energy from the ocean. In this study, we propose a self-powered system that integrates a multilayer TENG with a power management system (PMS) to produce hydrogen. The spherical TENG with a triggered switch overcomes the frequency limitation, significantly improving its output performance and expanding its application range.
Article
Chemistry, Multidisciplinary
Tian Ouyang, Xuan Zhao, Xiaochen Xun, Fangfang Gao, Bin Zhao, Shuxin Bi, Qi Li, Qingliang Liao, Yue Zhang
Summary: Self-powered photodetectors are crucial in UV communication, but suboptimal charge utilization hinders their performance. This study presents a self-powered photodetector designed to improve charge utilization using photothermal effect and enhanced conductivity. The device exhibits high responsivity and fast response time, and has been successfully applied in a UV communication system.
Article
Nanoscience & Nanotechnology
Li Gao, Xiankun Zhang, Huihui Yu, Mengyu Hong, Xiaofu Wei, Zhangyi Chen, Qinghua Zhang, Qingliang Liao, Zheng Zhang, Yue Zhang
Summary: Two-dimensional (2D) MoS2 is a promising channel material for next-generation integrated circuit (IC) transistors. However, the reliability of MoS2 is compromised by vacancy defects, particularly sulfur vacancies (V-S). Understanding the impact of these defects on transistor reliability has been challenging. In this study, we establish a simulated initiator to track the evolution of vacancy defects in MoS2 and their influence on transistor reliability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jiankun Xiao, Kuanglei Chen, Xiankun Zhang, Xiaozhi Liu, Huihui Yu, Li Gao, Mengyu Hong, Lin Gu, Zheng Zhang, Yue Zhang
Summary: Researchers have achieved ohmic contact between metal and monolayer MoS2 by introducing a large number of sulfur vacancies, which significantly reduces contact resistance and enables high-performance MoS2 FETs. The dominant factor driving enhanced electrical performance is the increased electron doping caused by sulfur vacancies. This study provides a simple method to promote the development of atomically thin integrated circuits.
Article
Materials Science, Multidisciplinary
Mengyu Hong, Xiankun Zhang, Yu Geng, Yunan Wang, Xiaofu Wei, Li Gao, Huihui Yu, Zhihong Cao, Zheng Zhang, Yue Zhang
Summary: Metal-semiconductor contacts play a crucial role in semiconductor devices. Researchers propose a nanobelt-assisted transfer strategy that enables the universal transfer of over 20 different types of electrodes. The contacts prepared using this strategy exhibit low Schottky barriers and adhere to the Schottky-Mott rule.
Article
Chemistry, Multidisciplinary
Xianye Li, Liang Xu, Pei Lin, Xiaodan Yang, Huamei Wang, Huaifang Qin, Zhong Lin Wang
Summary: Clusters of tightly coupled machinery units can exhibit collective behavior and behave like metamaterials to address environmental disturbances. This is particularly important for harnessing water wave energy, a promising clean energy source with huge reserves but a formidable challenge for traditional generators. In this study, a novel three-dimensional chiral network of triboelectric nanogenerators (TENGs) is designed to effectively harvest water wave energy. The network, unlike bulky and rigid machines, features a distributed architecture with chiral connections between unbalanced units, providing flexibility, hyper-elasticity, and wave absorption behavior similar to mechanical chiral metamaterials. The network can be configured to harvest wave energy in all directions at different scales and depths. An integrated energy harvesting system, combined with a power management circuit, enhances the stored energy by approximately 319 times. This study demonstrates the great potential of the novel 3D chiral network for blue energy harvesting and self-powered systems based on TENGs, which can adapt better to harsh ocean environments with flexible and distributed characteristics. It also presents a paradigm shift from mechanical metamaterial designs to energy harvesting networks, inspiring innovative energy harvesting systems and strongly coupled machinery systems based on metamaterials.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Lihua Wang, Xiaoyu He, Xiankun Zhang, Xiaofu Wei, Kuanglei Chen, Li Gao, Huihui Yu, Mengyu Hong, Zheng Zhang, Yue Zhang
Summary: This study reports an ultrahigh-rectification-ratio WSe2 homojunction diode achieved by semi-floating gate doping. The use of direct charge trapping mode and oxygen plasma treatment enhances the interface properties, charge transfer efficiency, and rectification performance.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Liangxu Xu, Xuan Zhao, Xiaochen Xun, Fangfang Gao, Lusen Gao, Shuxin Bi, Liubing Fan, Shuchang Zhao, Qingliang Liao, Yue Zhang
Summary: In this study, an omnidirectionally strain-unperturbed tactile array was prepared by manipulating the fiber orientations in quasi-homogeneous elastomer meshes. The tactile array exhibited high strain insensitivity and robustness even after severe mechanical deformation. By integrating the tactile array with a microcontroller, an accurate tactile interaction system was achieved under multiaxial tensile strain.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Mohammed Ismail Beddiar, Xiankun Zhang, Baishan Liu, Zheng Zhang, Yue Zhang
Summary: This article reviews the progress in transforming bipolar 2D materials into unipolar p-type/n-type semiconductors, focusing on the factors influencing carrier behavior and the application of these conversion strategies in device performance tuning and new structure device construction.
