Article
Materials Science, Multidisciplinary
Guidong Wang, Dong Li, Xinyu Wang, Yu Zhang, Hao Zhang, Jun Wang
Summary: The charge-transport modes of organic heterojunction transistors (OHJTs) have significant importance in their potential applications. In this study, OHJTs with tunable charge-transport modes were demonstrated based on a single vertical heterointerface. The competition between electrons and holes to as the dominant carriers was attributed to the variation in the densities of two charge carriers. Additionally, the function of the heterointerface was further explored through the insertion of a high-kappa organic dielectric layer.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Nanoscience & Nanotechnology
Andrea Perinot, Francesca Scuratti, Alberto D. Scaccabarozzi, Karolina Tran, Jorge Mario Salazar-Rios, Maria Antonietta Loi, Giovanni Salvatore, Simone Fabiano, Mario Caironi
Summary: The integration of organic electronic circuits into real-life applications requires meeting requirements such as low voltage and reduced power consumption. This paper proposes a solution-based fabrication method for low-voltage organic transistors using a photo-cross-linked, low-k dielectric interlayer. The method is widely applicable to various semiconducting and dielectric materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Ruolan Wen, Zhenhong Jiang, Rui Miao, Lei Wang, Yujian Liang, Jingui Deng, Qingyi Shao, Jian Zhang
Summary: Based on the Density functional theory (DFT) combined with non-equilibrium Green's function (NEGF), the potential application of boron, nitrogen and phosphorus co-doped seven-atom-wide armchair graphene nanoribbons field effect transistor (7-AGNR-FET) was investigated. The gate voltage can modulate the electronic transport properties, and the device shows good working behavior with positive drain voltage. Negative gate voltage leads to negative differential resistance effect.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Mingchao Xiao, Jie Liu, Chuan Liu, Guangchao Han, Yanjun Shi, Chunlei Li, Xi Zhang, Yuanyuan Hu, Zitong Liu, Xike Gao, Zhengxu Cai, Ji Liu, Yuanping Yi, Shuai Wang, Dong Wang, Wenping Hu, Yunqi Liu, Henning Sirringhaus, Lang Jiang
Summary: Bulk heterojunctions in organic photovoltaic devices have complex structures, but highly-ordered organic p-n junctions are desirable for studying the nature of organic heterojunctions. By using a design rationale, the authors successfully fabricated p-n heterojunctions based on monolayer molecular crystals.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Xiaochi Liu, Yuchuan Pan, Junqiang Yang, Deshun Qu, Huamin Li, Won Jong Yoo, Jian Sun
Summary: This study demonstrates a unique structure of two-dimensional p-MOSFET with controlled oxygen plasma-induced degenerate p-doping in contact areas, achieving excellent device performances including low threshold voltage, high on/off ratio, and high hole mobility.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Dorra Mahdaoui, Chika Hirata, Kahori Nagaoka, Kun'ichi Miyazawa, Kazuko Fujii, Toshihiro Ando, Manef Abderrabba, Osamu Ito, Shinjiro Yagyu, Yubin Liu, Yoshiyuki Nakajima, Kazuhito Tsukagoshi, Takatsugu Wakahara
Summary: Organic cocrystals assembled by noncovalent interactions have attracted significant attention due to their remarkable properties and applications. This study explores the ambipolar charge transfer properties of C-70/Fc nanosheets and demonstrates a thermally induced irreversible switching in the device's semiconducting behavior, from ambipolar to unipolar. Additionally, the C-70/Fc nanosheets show better thermal stability compared to C-60/Fc nanosheets.
Article
Chemistry, Multidisciplinary
Jiaqi Wei, Fang Liu, Xin Rong, Tao Wang, Liuyun Yang, Renchun Tao, Jing Yang, Liwei Guo, Bo Shen, Xinqiang Wang
Summary: Unintentional nitrogen incorporation in beta-Ga2O3 films grown by plasma-assisted molecular beam epitaxy hinders n-type doping, while a quartz crucible free of nitrogen atoms can overcome this issue, allowing tunable electron concentration in the n-type beta-Ga2O3 films.
Article
Chemistry, Multidisciplinary
Jian Zhang, Gabriela Borin Barin, Roman Furrer, Cheng-Zhuo Du, Xiao-Ye Wang, Klaus Muellen, Pascal Ruffieux, Roman Fasel, Michel Calame, Mickael L. Perrin
Summary: Bottom-up synthesized graphene nanoribbons (GNRs) are of interest due to their atomically controlled structure and customizable physical properties. However, understanding the relationship between cryogenic charge transport and the number of GNRs in a device is challenging due to lack of precise control over GNR length and location.
Article
Materials Science, Multidisciplinary
Siyu Guo, Jiarong Yao, Ying Wang, Lijuan Zhang, Fei Zhai, Xiali Zhang, Yiyu Feng, Wei Feng, Xiaotao Zhang, Jiansheng Jie, Fangxu Yang, Rongjin Li, Wenping Hu
Summary: Growing high-quality bilayer p-n heterojunctions using 2D molecular crystal templates can reduce interlayer mixing issues and enhance the performance of aOFETs.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Yoonsok Kim, Taeyoung Kim, Wonchae Jeong, Mun Seok Jeong, Eun Kyu Kim
Summary: Researchers have achieved high performance logic inverters by using JFETs with a mixed dimensional structure. They fabricated P-type and N-type JFET devices using WSe2 and silicon materials. The characteristics of WSe2 JFETs were improved through surface polymer doping. However, there was a decline in mobility and noise characteristics due to surface scattering effects after doping.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Yogesh Yadav, Samarendra P. Singh
Summary: Researchers reported an organic unipolar inverter for the first time, with the driver and load transistors gated by ionic liquids. They utilized the low saturation regime channel resistance of the IL-gated organic field-effect transistors to design the inverter. This simple fabrication methodology eliminates the need for different channel dimensions and enables size reduction of circuits.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Yan Wang, Jong Chan Kim, Yang Li, Kyung Yeol Ma, Seokmo Hong, Minsu Kim, Hyeon Suk Shin, Hu Young Jeong, Manish Chhowalla
Summary: This study reports a method for preparing high-performance p-type devices on two-dimensional transition-metal dichalcogenides (TMDs), and demonstrates ideal interfaces and no chemical interactions between the materials through atomic resolution imaging and spectroscopy.
Article
Chemistry, Multidisciplinary
Dongha Shin, Hwa Rang Kim, Byung Hee Hong
Summary: The article presents a novel strategy for chemically functionalizing graphene for use in FETs without affecting its electrical performance, by controlling the Fermi level through the consecutive treatment of gold nanoparticles and thiol-SAM molecules. This approach enables positive and negative doping effects to be induced, paving the way for developing high-performance sensors that fully utilize the pristine properties of graphene.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Wonjun Choi, Jongtae Ahn, Ki-Tae Kim, Hye-Jin Jin, Sungjae Hong, Do Kyung Hwang, Seongil Im
Summary: The highly crystalline 2D/3D-mixed p-transition metal dichalcogenide (TMD)/n-Ga2O3 heterojunction devices were fabricated by mechanical exfoliation, focusing on ambipolar channel transistors with two different types of channels in a single device architecture, with successful high-speed photo-sensing applications achieved.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhaolin Ai, Liqian Wang, Qianying Guo, Derong Kong, Yungen Wu, Yunqi Liu, Dacheng Wei
Summary: The developed UVC dosimeters, based on DNA nanostructure-modified graphene field-effect transistors, demonstrate high sensitivity and a wide detectable dose range. They outperform current direct UV dosimeters by at least 5 times.
CHEMICAL COMMUNICATIONS
(2021)
Review
Physics, Applied
M. Shrestha, G. K. Lau, A. K. Bastola, Z. Lu, A. Asundi, E. H. T. Teo
Summary: Most modern high-rise buildings use glass facades, but this can result in issues such as compromised visual privacy and energy loss. Optically tunable windows, which can adjust daylighting, heat radiation, and transparency, are seen as a potential solution. However, existing commercial options have limitations, such as high cost and limited performance. Therefore, researchers are exploring low-cost actively tunable windows. However, most of these emerging technologies do not meet all the requirements. To fully understand and improve these technologies, an in-depth review of their optical principles is essential.
APPLIED PHYSICS REVIEWS
(2022)
Article
Chemistry, Multidisciplinary
Shiyong Huang, Zhi Kai Ng, Hongling Li, Apoorva Chaturvedi, Jian Wei Mark Lim, Roland Yingjie Tay, Edwin Hang Tong Teo, Shuyan Xu, Kostya (Ken) Ostrikov, Siu Hon Tsang
Summary: This study demonstrates the excellent stability of hexagonal boron nitride nanosheets (hBNNS) under extreme conditions such as high-energy ions and reactive atomic oxygen. The results highlight the potential of hBNNS films as protective, thermally conductive, and insulating layers in spacecrafts, electric plasma satellite thrusters, and semiconductor optoelectronic devices.
Article
Chemistry, Physical
Dongqiang Gao, Liuting Zhang, Mengchen Song, Fuying Wu, Jiao Wang, Hu Zhao, Hong Li
Summary: Ni/V2O3 nanoparticles with heterostructures were successfully prepared by hydrogenating NiV-LDH. MgH2 + 7wt% Ni/V2O3 showed superior hydrogen absorption and desorption performances compared to pure MgH2 and MgH2 + 7wt% NiV-LDH. The addition of 7wt% Ni/V2O3 significantly reduced the initial discharging temperature of MgH2 and improved the hydrogen absorption capacity. Furthermore, MgH2 + 7wt% Ni/V2O3 exhibited better cycling performance and the microstructure analysis revealed the uniform distribution of heterostructural Ni/V2O3 nanoparticles. Rating: 8/10
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Multidisciplinary
Xiang Chu, Weiqing Yang, Hong Li
Summary: This review summarizes the recent advances in polyaniline (PANI)-based micro-supercapacitors (MSCs) using a wide range of electrode materials. Firstly, the fundamentals of MSCs including their working principle, device design, fabrication technology, and performance metrics are outlined. Then, the working principle and synthesis methods of PANI are discussed. Afterward, MSCs based on various PANI materials including pure PANI, PANI hydrogel, and PANI composites are discussed in detail. Lastly, concluding remarks and perspectives on their future development are presented.
MATERIALS HORIZONS
(2023)
Review
Materials Science, Multidisciplinary
Mengchen Song, Liuting Zhang, Fuying Wu, Haoyu Zhang, Hu Zhao, Lixin Chen, Hong Li
Summary: Energy storage is crucial for the large-scale utilization of renewable energy. Magnesium hydride (MgH2) has the advantages of low cost, abundant resources, and high energy storage capacity, but its practical application is hindered by sluggish kinetics and poor cycling stability. This review summarizes recent advances in enhancing the hydrogen storage, lithium-ion storage, and heat storage performances of MgH2, and discusses its prospects in these fields. It is expected that this review will inspire insightful and pioneering research on the design and preparation of MgH2 with excellent energy storage performances.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Engineering, Mechanical
Jueyu Chen, Edwin Hang Tong Teo, Kui Yao
Summary: Haptic technology, which uses actuators to provide tactile feedback for human-computer interaction, is increasingly being applied in electronic devices. This review compares four types of electromechanical actuators: electromagnetic, electrostatic, piezoelectric, and electrostrictive actuators, for achieving haptic feedback. The driving principles, working conditions, applicable scopes, and characteristics of these actuators are fully compared. The design and values of piezoelectric actuators for achieving sophisticated and high-definition haptic effects are particularly emphasized. The current status and future directions of different types of haptic actuators are discussed.
Article
Biotechnology & Applied Microbiology
Milan Shrestha, Leonardus Depari, Maziar Shakerzadeh, Ranjana Shivakumar, Edwin H. T. Teo
Summary: Researchers developed a viscous composite ink with PEDOT:PSS and PDMS for coating on untreated PDMS, allowing for more uniform and adhesive ink-based electrodes. These coatings are transparent, stretchable, electrically conductive, and act as compliant electrodes. They also fabricated transparent dielectric elastomer actuators using PEDOT:PSS/PDMS electrodes, which had slightly lower actuation strain and breakdown fields compared to traditional graphite electrodes, but improved robustness in localized dielectric breakdown events.
SENSORS AND ACTUATORS REPORTS
(2023)
Article
Engineering, Environmental
Ruofei Zhu, Ke Li, Dan Wang, Jipeng Fei, Jun Yan Tan, Shuzhou Li, Jichao Zhang, Hong Li, Shaohai Fu
Summary: We have ingeniously designed a 3D artificial tree evaporator, which combines Murray networks with plant transpiration for fast water transport and accelerated evaporation. This nature-inspired artificial tree can maximize solar energy absorption and utilize environmental energy for evaporation, achieving high evaporation rates and energy efficiency. It can continuously produce pure water from real seawater samples that meet or exceed drinking water standards set by WHO and EPA.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Hongling Li, Zhi Kai Ng, Roland Yingjie Tay, Shiyong Huang, Siu Hon Tsang, Edwin Hang Tong Teo
Summary: In this study, graphene/MXene composite thin films with excellent flexibility and EMI shielding capability were fabricated. The composite thin films exhibited high EMI shielding effectiveness and superb electrothermal conversion capability, providing a facile method for EMI shielding and thermal management applications in next-generation flexible electronics.
ACS APPLIED NANO MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Yunxing Zhao, Xiaolin Zheng, Pingqi Gao, Hong Li
Summary: This article reviews the recent theoretical and experimental progress of defective MoSx for catalytic applications. It begins with a brief description of the structure and basic catalytic applications of MoS2, and then focuses on the application of defective two-dimensional and non-two-dimensional MoSx catalysts in the hydrogen evolution reaction (HER) and the rational design of defects. The article also discusses the applications of defective MoSx in various catalytic reactions and presents perspectives on the challenges and opportunities of using defective MoSx for catalysis.
MATERIALS HORIZONS
(2023)
Article
Engineering, Electrical & Electronic
Joseph M. de Saxce, Chun Fei Siah, Tan Chong Wei, Damien Passerieux, Stephane Bila, Florence Podevin, Beng Kang Tay, Philippe Coquet, Dominique Baillargeat
Summary: This letter presents a novel E-band vertically aligned carbon nanotubes-based air-filled waveguide (AFWG). The waveguide is designed using a full-wave three-dimensional electromagnetic software and an equivalent VACNTs bulk model, and fabricated using a CMOS compatible CNTs transfer process and a dedicated assembly process. The concept of the CNTs-based AFWG is validated for the first time through measurements, with an experimental attenuation constant estimated at 0.5 dB/mm between 81 and 86 GHz.
IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS
(2023)
Article
Chemistry, Physical
Muhammad Abiyyu Kenichi Purbayanto, See Wee Arramel, See Wee Koh, Francesco Maddalena, Dorota Moszczynska, Jessie Manopo, Yudi Darma, Dominik Kowal, Hong Li, Muhammad Danang Birowosuto, Agnieszka Maria Jastrzebska
Summary: This study investigates the influence of doped-MXenes on the work function of perovskite materials and its impact on efficient charge transfer in optoelectronic devices. The findings suggest that fluorine-doped MXenes can significantly increase the work function of perovskite materials, leading to improved device performance.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Ying Li, Li Quan Lee, Zhi Gen Yu, Hu Zhao, Yong-Wei Zhang, Pingqi Gao, Hong Li
Summary: In this study, a cost-effective and highly efficient bifunctional electrocatalyst for the electrooxidation of PET waste and green hydrogen generation is reported. The electrocatalyst shows low overpotentials and achieves high current densities for both PET hydrolysate oxidation and HER. The assembled electrolyzer using this bifunctional catalyst requires lower voltage compared to pure water splitting.
SUSTAINABLE ENERGY & FUELS
(2022)
Article
Chemistry, Physical
Ying Li, Yunxing Zhao, Hu Zhao, Zilei Wang, Hong Li, Pingqi Gao
Summary: This study presents a facile hydrothermal and selenization treatment to fabricate cobalt selenide nanosheets on nickel foam as a bifunctional catalyst for plastic-electroreforming assisted water electrolysis. The catalyst exhibits superior electrocatalytic performance and durability for both the HER and electrooxidation of plastic waste, providing a promising pathway for low-cost, high efficiency, and stable production of green hydrogen assisted by electroreforming of plastic waste.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Inorganic & Nuclear
Mengchen Song, Liuting Zhang, Zhendong Yao, Jiaguang Zheng, Danhong Shang, Lixin Chen, Hong Li
Summary: This study investigates the mechanism of kinetics decline during cycling of MgH2, revealing the grain growth in MgH2 and Fe nanocatalysts as the main cause of capacity loss and kinetic degradation.
INORGANIC CHEMISTRY FRONTIERS
(2022)
