Article
Engineering, Electrical & Electronic
Mingyuan Liu, Fei Qin, Molly Rothschild, Yuxuan Zhang, Dong Hun Lee, Kwangsoo No, Han Wook Song, Sunghwan Lee
Summary: In amorphous InAlZnO, the addition of trivalent aluminum cations slows down the crystallization of In2O3 and improves the stability of the amorphous phase. It also results in high carrier mobilities in the unannealed state.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Energy & Fuels
Takashi Koida, Takuya Matsui, Hitoshi Sai
Summary: This study explores the possibility of using amorphous SnO2 as a substitute for In2O3-based transparent conductive oxides (TCOs) in silicon heterojunction (SHJ) solar cells. The research demonstrates that the a-SnO2 thin films have good conductivity, high transparency, and excellent damp heat stability. When applied in SHJ solar cells, the a-SnO2 layer shows no negative effect on the performance compared to indium tin oxide layers. This suggests that a-SnO2 has the potential to be a cost-effective and sustainable alternative to conventional In2O3-based TCOs.
Article
Engineering, Electrical & Electronic
Wanying Li, Quanyang Tao, Zhiwei Li, Guanhua Yang, Zheyi Lu, Yang Chen, Yao Wen, Yiliu Wang, Lei Liao, Yuan Liu, Jun He
Summary: Two-dimensional (2D) semiconductors, such as black phosphorus and germanium arsenide, can be fabricated into monolayer transistors with three-dimensional raised contacts using van der Waals peeling technique. The channel region of a multilayer black phosphorus transistor can be reduced to a monolayer thickness without degrading its lattice structure. However, the carrier mobility of black phosphorus drops sharply when reducing body thickness, behaving more like a conventional bulk semiconductor.
NATURE ELECTRONICS
(2023)
Article
Chemistry, Physical
Mingyuan Liu, Xingyu Wang, Han Wook Song, Hyeonghun Kim, Michael Clevenger, Dong-Kyun Ko, Kwangsoo No, Sunghwan Lee
Summary: This study investigates the origin of carrier density modulation in InAlZnO (IAZO), finding that the carrier density of IAZO can be significantly increased through low temperature annealing. Additionally, high-pressure oxidation experiments reveal that the equilibrium carrier density of IAZO is much higher than those typically used in TFT channel applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Coatings & Films
Sayyed Ahad Sajjadi, Naghi Parvini Ahmadi, Sasan Yazdani
Summary: The research examined the effect of low-temperature calcination on sol-gel derived amorphous alumina coatings, with coatings calcined at 300 degrees C exhibiting significantly improved corrosion resistance compared to those calcined at 500 degrees C.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Anna Reinhardt, Holger von Wenckstern, Marius Grundmann
Summary: This report focuses on the electrical properties of all-amorphous JFETs based on n-type ZnON and p-type ZCO, comparing devices with different channel thicknesses. The best devices with a 48 nm channel layer thickness show superior performance, including high on/off-ratios and low subthreshold swing.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Materials Science, Coatings & Films
J. P. Fernandez-Hernan, A. J. Lopez, B. Torres, J. Rams
Summary: The research shows that the roughness of the substrate surface has a significant influence on the thickness and adhesion of sol-gel coatings. Additionally, the direction of grinding lines has an impact on the formation of defects in the coatings, but not on the thickness and adhesion. The study suggests including the r parameter in the Landau-Levich equation to account for substrate roughness and evaporation during the dip-coating process.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Jeonga Lee, Cheol Hee Choi, Taikyu Kim, Jaeseok Hur, Min Jae Kim, Eun Hyun Kim, Jun Hyung Lim, Youngho Kang, Jae Kyeong Jeong
Summary: The study found that doping with hydrogen (H) into oxygen sites (HO) can significantly improve the performance of amorphous In-Ga-Zn-Sn oxide (aIGZTO) thin-film transistors (TFTs).
ACS APPLIED MATERIALS & INTERFACES
(2022)
Review
Materials Science, Multidisciplinary
Bojing Lu, Fei Zhuge, Yi Zhao, Yu-Jia Zeng, Liqiang Zhang, Jingyun Huang, Zhizhen Ye, Jianguo Lu
Summary: This review provides a comprehensive overview of In-free amorphous oxide semiconductors (AOSs), including their fundamental properties and practical applications. Various types of In-free AOSs, with a focus on ZnSnO-based AOSs, are introduced. The study also investigates In-free AOS-based thin-film transistors (TFTs), which are crucial for next-generation transparent and flexible displays. Additionally, the review discusses the applications of In-free AOSs in transparent electrodes, sensors, memristors, synaptic devices, and circuits.
CURRENT OPINION IN SOLID STATE & MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Wojciech Kacalak, Igor Maciejewski, Dariusz Lipinski, Blazej Balasz
Summary: This paper presents a simulation model and experimental test results of a vibration generator in the hot-dip galvanizing process. It discusses the impact of working parameters and unbalance on vibrations, and determines the operating conditions for achieving the highest vibration amplitude.
Article
Materials Science, Multidisciplinary
Lixing Sun, Qian Yang, Juntao Zou, Lei Ni, Xuhang Song, Rongyan Zhang, Shuhua Liang
Summary: This study investigates the diffusion bonding of leaded-tin bronze and 45 steel using the hot-dip tin coating treatment. The results show that the treatment promotes the diffusion of elements between the two materials, resulting in the formation of a metallurgical joint with improved shear strength and ductility.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Ceramics
Koji Abe, Tasuku Kubota
Summary: Al-doped ZnO (AZO) films were prepared by sol-gel method using precursor solutions containing oxygen sources. Zinc vacancy acceptors were formed under oxygen-rich growth conditions. Glass substrates with a zinc layer were used to supply zinc to the AZO films during calcination annealing. The AZO films showed wurtzite ZnO crystal structure and high transparency. The electrical properties of the films were improved by using substrates with a zinc layer, achieving a low resistivity of 9.4 x 10(-4) Ocm.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Gergely Tarsoly, Jae-Yun Lee, Kwan-Jun Heo, Sung-Jin Kim
Summary: In this study, solution-processed In2O3 layers doped with MoO3 were prepared to investigate the tunability of electrical performance characteristics. Doping was found to change the oxygen content of the film while minimally affecting the film morphology. By using the optimal MoO3 content, the threshold voltage of the device was reduced and bias stability improved significantly. A resistive load inverter was fabricated to demonstrate the applicability of the device.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Paper & Wood
Nadda Chiaoprakobkij, Manunya Okhawilai, Pornnapa Kasemsiri, Jiaqian Qin, Hiroshi Uyama
Summary: In this study, an alginate-doped cotton pad biocomposite was prepared using a dip-coating method. The composite showed a favorable fibrous structure, improved hydrophilicity, and enhanced mechanical stiffness due to the introduction of alginate. The composite also exhibited substantial ionic conductivity and stability in zinc-ion battery cycling.
Article
Chemistry, Multidisciplinary
Sobia Nisar, Beriham Basha, Ghulam Dastgeer, Zafar M. Shahzad, Honggyun Kim, Iqra Rabani, Aamir Rasheed, M. S. Al-Buriahi, Ahmad Irfan, Jonghwa Eom, Deok-kee Kim
Summary: In this study, a two-dimensional semiconductor biosensor based on tin disulfide/hexagonal boron nitride (SnS2/h-BN) was developed for the detection of streptavidin protein. A self-designed receptor was utilized to maintain the sensitivity of the biosensor, and the detection capabilities were investigated using Raman spectroscopy and electrical characterizations. The results showed that the SnS2/h-BN biosensor had high sensitivity and rapid response to low concentrations of target analytes, making it valuable for applications in point-of-care diagnostics, drug discovery, and environmental monitoring.
