Article
Chemistry, Multidisciplinary
Yongchun Zhang, Gang He, Leini Wang, Wenhao Wang, Xiaofen Xu, Wenjun Liu
Summary: This study proposes a low-temperature fabrication strategy for high-performance alpha-IGZO TFTs using an ultraviolet-assisted oxygen ambient rapid thermal annealing method (UV-ORTA). The experimental results show that the UV-ORTA treatment effectively suppresses defects and produces high-quality films similar to those treated at high temperatures. The alpha-IGZO/HfAIO TFTs fabricated using this method exhibit high-performance and low-voltage operation at a low temperature of 180 degrees C. A low-voltage resistor-loaded unipolar inverter based on the alpha-IGZO/HfAIO TFT demonstrates full swing characteristics and a high gain of 13.8.
Article
Nanoscience & Nanotechnology
Min Seong Kim, Hyung Tae Kim, Hyukjoon Yoo, Dong Hyun Choi, Jeong Woo Park, Tae Sang Kim, Jun Hyung Lim, Hyun Jae Kim
Summary: This study suggests that introducing an oxygen scavenger layer (OSL) in a-IGZO TFT can significantly improve its electrical characteristics and stability, especially at low temperatures. The enhancement is mainly attributed to the presence of hafnium (Hf) in the OSL, which absorbs oxygen ions to address interface issues between the front channel and OSL.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Yining Yu, Nannan Lv, Dongli Zhang, Yiran Wei, Mingxiang Wang
Summary: The letter discusses how the carrier mobility of amorphous InGaZnO thin-film transistors was enhanced by introducing nitrogen and forming Zn3N2, with a saturation field-effect mobility of 61.6 cm(2)/Vs. However, annealing at 400 degrees C led to a decrease in mobility to 4.1 cm(2)/Vs due to the formation of defective ZnxNy. Additionally, the enhanced mobility of a-IGZO TFTs did not exhibit persistent photoconductivity behavior, making them suitable for functional circuits in active-matrix displays.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Optics
Shuging Zhang, Guangsen Liu, Zhile Wang, Jiayi Xie, Lingyun Ji, Xiaobo He, Shanjun Tang
Summary: A low F-number and 100% cold stop efficiency are crucial for enhancing optical system performance in thermal imaging scenarios. A cooled infrared coaxial four-mirror system can meet these requirements, enhancing system integration and reducing adjustment costs. However, potential stray light caused by the central hole of the third mirror is a concern. This study proposes a structural model and method for designing such a system, providing an effective solution to control obstruction and optimize system performance.
Article
Engineering, Electrical & Electronic
Min Shi, Zhuolin Si, Enyang Men, Zheng Zhao, Yudong Xu, Ruzhong Zuo, Li Guo, Kunzhuang Hu
Summary: This study investigated the deposition of (Bi0.5Na0.5)(Ti1-xMnx)O3-delta (BNTMx) films on substrates through the sol-gel method, exploring the influence of Mn doping on microstructures and ferroelectric properties. Analysis of the valence states of Mn ions revealed their presence as Mn2+, Mn3+, and Mn4+. An optimum ferroelectric performance was observed in films with a Mn doping content of 0.04, highlighting their potential for future applications in multi-functional devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Bongho Jang, Jaewon Jang, Jae Eun Jang, Hyuk-Jun Kwon
Summary: This study fabricated high-performance SnO2 thin-film transistors (TFTs) at temperatures below 300 degrees C using the combustion-assisted sol-gel method. The results showed that the combustion-assisted solution process significantly increased the field-effect mobility of SnO2 TFTs compared to the conventional solution process, potentially enabling low-cost solution-processed electronics.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Haixu Liu, Hui Li, Junlei Tao, Jia Liu, Jinzheng Yang, Junjie Li, Jianmin Song, Jie Ren, Min Wang, Shaopeng Yang, Xin Song, Yanfeng Wang
Summary: This study developed a preparation scheme for AlF3 and GaF3 co-doped ZnO thin films using magnetron sputtering. The theoretical calculations and experimental results showed that the prepared FAGZO films had high electron mobility, low resistivity, and wide spectrum transmission performance. Moreover, the application of FAGZO films in perovskite solar cells demonstrated improved photocurrent density and power conversion efficiency compared to the reference film.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Yangbiao Liu, Jixi Wang, Xiudi Xiao, Xuesong Cai, Guizhang Sheng, Gang Xu
Summary: Metal-doping is an effective method for adjusting the properties of semiconductor metal oxides. In this study, Mo-doped tungsten oxide nanoparticles were synthesized using a solvothermal method, resulting in high-performance electrochromic films on ITO glass. Mo doping improved the electrochemical activity, optical properties, and conductivity of the films.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Electrical & Electronic
Yuyang Yang, Meng Zhang, Lei Lu, Man Wong, Hoi-Sing Kwok
Summary: This study characterizes and investigates the low-frequency noise (LFN) of bridged-grain polycrystalline silicon thin-film transistors (TFTs) for the first time. The noise power spectral density of drain current follows the classical 1/f noise theory, dominated by carrier number with correlated mobility fluctuation model. Compared to normal TFTs, BG TFTs exhibit a much smaller level of LFN, mainly attributed to grain boundary barrier lowering and trap density reduction.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Materials Science, Ceramics
Alfredo Blazquez Martinez, Nicolas Godard, Naveen Aruchamy, Cosme Milesi-Brault, Oana Condurache, Andreja Bencan, Sebastjan Glinsek, Torsten Granzow
Summary: In this study, polycrystalline Mn and Ti co-doped BiFeO3 thin films were fabricated on platinized silicon substrates by a solution deposition method, with PbTiO3 nanocrystals used as a seed layer to induce a preferential (100) pseudocubic orientation. The introduction of a PbTiO3 seed layer significantly reduced the leakage current and resulted in excellent room-temperature ferroelectric properties in the thin films.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Medicine, General & Internal
Adeline Yang, Si Ying Lim, Yee Ling Wong, Anna Yeo, Narayanan Rajeev, Bjorn Drobe
Summary: This study showed that highly myopic presbyopes had worse overall quality of life and functionality compared to presbyopes with low myopia. However, the use of PAL lenses improved perception outcomes.
JOURNAL OF CLINICAL MEDICINE
(2021)
Review
Chemistry, Multidisciplinary
Mingguang Li, Zheng Zhu, Zhizhi Wang, Wenjing Pan, Xinxiu Cao, Guangbao Wu, Runfeng Chen
Summary: In this review, recent technological reforms in post-treatment of perovskite thin films are summarized, and the key functions of post-treatment strategies in the design of high-quality perovskite films are thoroughly analyzed. The latest research progress of thermal annealing (TA)-related and TA-free techniques is then summarized and discussed. Finally, an outlook of the future trends of these post-treatment techniques is given.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Ethan Tseng, Shane Colburn, James Whitehead, Luocheng Huang, Seung-Hwan Baek, Arka Majumdar, Felix Heide
Summary: The research introduces a neural nano-optics imager that learns the physical structure of metasurfaces and a neural feature-based image reconstruction algorithm to improve image quality. Experimentally verified, the proposed method achieves an order of magnitude lower reconstruction error than existing approaches. This imager combines the widest field-of-view for full-color metasurface operation and simultaneously achieves the largest demonstrated aperture of 0.5 mm at an f-number of 2.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Tai Nguyen, Yves Fleming, Philipp Bender, Patrick Grysan, Nathalie Valle, Brahime El Adib, Noureddine Adjeroud, Didier Arl, Melanie Emo, Jaafar Ghanbaja, Andreas Michels, Jerome Polesel-Maris
Summary: This study investigates a strong magnetoelectric (ME) effect in thin-film composites of nickel, iron, or cobalt foils with AlN films grown by PE-ALD, revealing intricate interface structures and crystalline characteristics. The research also discusses the magnetoelectric responses and power generation potential of these composites, highlighting the importance of interface analysis in understanding their performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Optics
Arasad Ali Khan, H. L. Yadav
Summary: Improper optical design and aberrations in optical components of a dual-beam differential LDA system result in non-uniform fringe spacing and inaccurate measurements. To improve measurement accuracy, fringe spacing should be optimized for particle concentration and size. The use of a four-hololens imaging system eliminates aberrations and allows for optimized fringe formation based on different particle conditions.
OPTICS AND LASER TECHNOLOGY
(2023)
