Article
Engineering, Electrical & Electronic
Yuan Li, Alex Q. Huang
Summary: The Huang-Pair is a novel hybrid diode concept that integrates a low forward voltage drop diode with a high voltage majority carrier switch, demonstrating flexibility in performance tradeoffs and applicability across different voltage classes.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Chemistry, Physical
Liang Sun, Lifeng Zhu, Chunli Zhang, Weiqiu Chen, Zhonglin Wang
Summary: This study utilizes flexoelectricity to control the performance of silicon-based SBDs, finding significant impact on various performance indicators. Current-voltage characteristics of the SBD under different tip forces were measured using C-AFM, confirming the important role of flexoelectricity.
Article
Chemistry, Physical
Zakir Caldiran
Summary: This study investigated the effect of lithium fluoride (LiF) as an interface material on basic device parameters with different contact metals. Results showed that LiF interface material increased the barrier height compared to the reference device, with varying effects for different metals.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Qianyang Zhang, Linlin Hou, Viktoryia Shautsova, Jamie H. Warner
Summary: In this article, ultrathin all-2D lateral diodes are fabricated using monolayer 2D materials grown by chemical vapor deposition. The placement of graphene electrodes below and above the WS2 monolayer creates a lateral device with two different Schottky barrier heights. The device exhibits rectification behavior and can generate strong electroluminescence. The work contributes to the understanding of 2D metal-semiconductor heterojunctions and proposes a method for obtaining all-2D Schottky diodes while maintaining an ultrathin form.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Guoqing Shao, Juan Wang, Zhangcheng Liu, Yanfeng Wang, Wei Wang, Hong-Xing Wang
Summary: Introducing LaB6 into diamond SBD can improve its SBH and reverse breakdown capability. LaB6 significantly reduces the interface states density of diamond SBD, showing great potential for higher performance.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Physical
Qihao Zhang, Jiangwei Liu, Chunming Tu, Dongyuan Zhai, Min He, Jiwu Lu
Summary: High-performance beta-Ga2O3-based Schottky barrier diodes (SBDs) and metal-semiconductor field-effect transistors (MESFETs) were fabricated on a highly doped epitaxial wafer. The electrical properties and stabilities of these devices after annealing were investigated. The results showed excellent ON/OFF ratios for all SBDs, and the MESFETs exhibited pinch-off and saturation characteristics with high drain currents, surpassing previous reports. The study provides valuable insights for the development of practical applications of beta-Ga2O3-based electronic devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Electrical & Electronic
Mike Schwarz, Alexander Kloes, Denis Flandre
Summary: In this study, the combination of ultra-low-power diode and Schottky Barrier transistor concepts were analyzed through TCAD mixed-mode simulations. Results show that the negative impedance characteristics of SB devices in reverse mode provide more stable current performance compared to CMOS, particularly in terms of temperature sensitivity. This unique behavior is attributed to carriers tunneling through the barrier by field emission and carriers overcoming the barrier by thermionic emission, contributing to superior current performance over a wide temperature range.
SOLID-STATE ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
G. Bellocchi, M. Vivona, C. Bongiorno, P. Badala, A. Bassi, S. Rascuna, F. Roccaforte
Summary: By investigating the effects of annealing temperature and metal thickness on the Schottky barrier height in Ti/4H-SiC rectifiers, controlled lowering of the barrier height has been achieved, potentially improving efficiency in terms of power consumption.
SOLID-STATE ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Sang-Woo Han, Jianan Song, Mansura Sadek, Alex Molina, Mona A. Ebrish, Suzanne E. Mohney, Travis J. Anderson, Rongming Chu
Summary: This study improved the performance of GaN super-heterojunction Schottky barrier diodes by utilizing metal-2DEG sidewall n-ohmic contacts, a pGaN notch near the cathode, and a high-energy Al implantation step. The resulting SHJ-SBD showed a breakdown voltage of approximately 12.5 kV and a specific ON-resistance of 100.8 m Omega.cm(2).
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Multidisciplinary
Biaohong Huang, Xuefeng Zhao, Xiaoqi Li, Lingli Li, Zhongshuai Xie, Di Wang, Dingshuai Feng, Yuxuan Jiang, Jingyan Liu, Yizhuo Li, Guoliang Yuan, Zheng Han, Tula R. Paudel, Guozhong Xing, Weijin Hu, Zhidong Zhang
Summary: In this study, the authors utilize the Schottky barrier at the metal/ferroelectric interface to control the self-polarization states of a ferroelectric thin film heterostructure. Through investigation and theoretical studies, they demonstrate that doping with Sm changes the concentration and distribution of oxygen vacancies, which alters the Schottky barrier and depolarization field, resulting in the evolution of the system from single domain to polydomain states. By engineering self-polarization, they also achieve significant improvement in the resistive switching behaviors of the ferroelectric diodes (FDs). This research provides insights into self-polarization and its impact on device performance, making FDs a competitive memristor candidate for neuromorphic computing.
Article
Materials Science, Multidisciplinary
N. Mikata, M. Takeuchi, N. Ohtani, K. Ichikawa, T. Teraji, S. Shikata
Summary: This study examines the effect of surface irregularities on the characteristics of Schottky barrier diodes (SBDs) by observing pyramidal and flat-type hillocks. It is found that surface protrusions on pyramidal hillocks lead to higher reverse leakage currents, while flat hillock regions without surface irregularities exhibit lower reverse currents.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Coatings & Films
Hsiao-Hsuan Wan, Jian-Sian Li, Chao-Ching Chiang, Xinyi Xia, Fan Ren, Hannah N. Masten, James Spencer Lundh, Joseph A. Spencer, Fikadu Alema, Andrei Osinsky, Alan G. Jacobs, Karl Hobart, Marko J. Tadjer, S. J. Pearton
Summary: NiO/beta-(AlxGa1-x)(2)O-3/Ga2O3 heterojunction lateral geometry rectifiers with diameter 50-100 mu m exhibited high reverse breakdown voltages. The Si-doped alloy layer grown by metal organic chemical vapor deposition had an Al composition of approximately 21%. The rectifiers demonstrated low on-state resistances and high on/off ratios, making them highly efficient for power applications.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Physical
Omer Sevgili, Faruk Ozel, Aydin Rusen, Evin Yigit, Ikram Orak
Summary: In this study, an Al/Ba2P2O7/p-Si device was fabricated using barium-based pyrophosphate at the interface layer. Characterization techniques such as AFM, SEM, and XRD were used to analyze the surface morphology and material characteristics. The electrical properties and photoresponsivity of the device were investigated, and various diode parameters were calculated. Additionally, the temperature response and capacitance-conductance-voltage characteristics of the device were studied.
SURFACES AND INTERFACES
(2022)
Article
Physics, Condensed Matter
Di Zhang, Haifeng Chen, Wei He, Zifan Hong, Qin Lu, Lixin Guo, Tao Liu, Xiangtai Liu, Yue Hao
Summary: The research on the flexible transverse beta-Ga2O3 Schottky barrier diode demonstrated that the device's electrical characteristics change with increasing curvature, attributed to the decrease in barrier height and increase in scattering. The forward current of the device shows different trends in small and large voltage ranges after bending, while the maximum transconductance and subthreshold swing are also affected by the increase in curvature. The switch ratio of the device remains relatively stable under bending conditions compared to flat conditions.
SUPERLATTICES AND MICROSTRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Sanghun Han, Taemyung Kwak, Uiho Choi, Hyeonu Kang, Geunho Yoo, Seong-woo Kim, Okhyun Nam
Summary: This study demonstrates the growth of p-type lateral-structure diamond Schottky barrier diodes (SBDs) on a heteroepitaxial diamond substrate using a thin atomic-layer-deposited hafnium oxide (HfO2) interfacial layer. Two kinds of SBDs are grown on heteroepitaxial diamond substrates with a 10 nm HfO2 interlayer. The HfO2 interlayer reduces the inhomogeneous Schottky barrier height and enhances the barrier height due to the reduction in the interface state density.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Multidisciplinary Sciences
Tomokazu Fukuda, Kai Furuya, Kouhei Takahashi, Ai Orimoto, Eriko Sugano, Hiroshi Tomita, Sayo Kashiwagi, Tohru Kiyono, Tsuyoshi Ishii
Summary: This study compared the biological characteristics and genome-wide expression profiles of immortalized human dermal papilla cells generated by different methods to determine the optimal immortalization method. The data would be valuable to scientists aiming to establish new immortalized cell lines.
Article
Biochemistry & Molecular Biology
Yusaku Chukai, Takeshi Iwamoto, Ken Itoh, Hiroshi Tomita, Taku Ozaki
Summary: The study revealed that mitochondrial calpain-5 is activated under low Ca2+ concentrations and in response to endoplasmic reticulum stress, indicating its therapeutic potential in diseases associated with ER stress.
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
(2021)
Article
Multidisciplinary Sciences
Kai Furuya, Tao Wu, Ai Orimoto, Eriko Sugano, Hiroshi Tomita, Tohru Kiyono, Takahiro Kurose, Yoshihiro Takai, Tomokazu Fukuda
Summary: The study investigated the expression patterns of immortalized corneal epithelial cells with different genetic modifications, showing that SV40 immortalized cells had a distinct expression pattern from wild-type cells regardless of serum presence, while corneal epithelial cells with combinatorial expression had a pattern closer to that of wild-type cells.
Article
Biochemistry & Molecular Biology
Kitako Tabata, Eriko Sugano, Akito Hatakeyama, Yoshito Watanabe, Tomoya Suzuki, Taku Ozaki, Tomokazu Fukuda, Hiroshi Tomita
Summary: The study demonstrated that retinal ganglion cells were photosensitive after the transduction of optogenetic genes and did not induce any phototoxicity following exposure to continuous light.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biotechnology & Applied Microbiology
Izzah Munirah, Taku Ozaki, Aya Sekine, Motoko Morimoto, Mayu Sugawara, Haruka Takada, Eriko Sugano, Hiroshi Tomita, Tohru Kiyono, Tomokazu Fukuda
Summary: Dogs are considered as the first animals to establish close relationship with humans, exhibiting unique genetic evolution and diversity. Domestic dogs are used in safety tests of pharmacological products, emphasizing the importance of considering the welfare of experimental animals. In this study, immortalized domestic dog-derived fibroblasts were successfully established as a potential in vivo model system for evaluating pharmacological chemicals without the need for animal testing.
Article
Engineering, Electrical & Electronic
Hiromichi Wakebe, Takafumi Fukushima, Tetsu Tanaka
Summary: This study demonstrates a fabrication technique of SU-8 microchannel suitable for microfluidic-based BLM formation and successfully forms BLMs, which is of great significance for drug targets and biosensing applications.
ELECTRONICS AND COMMUNICATIONS IN JAPAN
(2022)
Article
Cell Biology
Takenori Oikawa, Tomokazu Fukuda, Tetsuro Yamashita, Hiroshi Tomita, Taku Ozaki
Summary: The study shows that Tat-mu CL has a protective effect, effectively inhibiting glutamate-induced cell death and preventing nuclear translocation of AIF and DNA fragmentation. Therefore, Tat-mu CL may be a potential gene therapy modality for neurodegenerative diseases.
IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-ANIMAL
(2022)
Article
Biochemistry & Molecular Biology
Yuki Kikuchi, Eriko Sugano, Shiori Yuki, Kitako Tabata, Yuka Endo, Yuya Takita, Reina Onoguchi, Taku Ozaki, Tomokazu Fukuda, Yoshihiro Takai, Takahiro Kurose, Koichi Tanaka, Yoichi Honma, Eduardo Perez, Maxwell Stock, Jose R. Fernandez, Masanori Tamura, Michael Voronkov, Jeffry B. Stock, Hiroshi Tomita
Summary: SIG-1451 partially protects against light-induced photoreceptor degeneration by inhibiting inflammatory responses.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Engineering, Electrical & Electronic
Yuki Miwa, Hisashi Kino, Takafumi Fukushima, Tetsu Tanaka
Summary: This study explores the use of transparent recording electrodes to enhance the performance of neural probes for optogenetics, using ZnO-based materials with good biocompatibility and transparency for potential application in biomedical devices.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2022)
Review
Biochemistry & Molecular Biology
Daiki Sakai, Hiroshi Tomita, Akiko Maeda
Summary: Optogenetics is a breakthrough in neuroscience with potential applications in treating retinal degenerative diseases. Clinical trials are currently underway to restore vision using optogenetic therapy. Choosing the right optogenetic tools and gene delivery methods is crucial for post-treatment vision improvement.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Multidisciplinary Sciences
Himari Matsusaka, Tao Wu, Kai Furuya, Tomoe Yamada-Kato, Lanlan Bai, Hiroshi Tomita, Eriko Sugano, Taku Ozaki, Tohru Kiyono, Isao Okunishi, Tomokazu Fukuda
Summary: This study identified downstream target genes involved in testosterone signalling in DPCs through RNA-Seq analysis, providing important data for the discovery of molecular targets for prostate cancer and AGA.
Article
Biochemistry & Molecular Biology
Akito Hatakeyama, Eriko Sugano, Tatsuki Sayama, Yoshito Watanabe, Tomoya Suzuki, Kitako Tabata, Yuka Endo, Tetsuya Sakajiri, Tomokazu Fukuda, Taku Ozaki, Hiroshi Tomita
Summary: Channelrhodopsins have been used in gene therapy to restore vision in patients with retinitis pigmentosa. The channel kinetics of ComV1 variants with different amino acid residues at the 172nd position were investigated. The study found that the characteristics of the amino acid at this position affect the radius of the ion gate, thereby altering the photocurrent and channel kinetics.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Yuya Takita, Eriko Sugano, Kazuya Kitabayashi, Kitako Tabata, Akito Saito, Takanori Yokoyama, Reina Onoguchi, Tomokazu Fukuda, Taku Ozaki, Lanlan Bai, Hiroshi Tomita
Summary: This study used multifocal electroretinography to evaluate focal retinal function in rats exposed to continuous light. The results showed a significant decrease in retinal function after 24 hours of light exposure, with a regional dependency in retinal damage.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Genetics & Heredity
Kai Furuya, So Fujibayashi, Tao Wu, Kouhei Takahashi, Shin Takase, Ai Orimoto, Eriko Sugano, Hiroshi Tomita, Sayo Kashiwagi, Tohru Kiyono, Tsuyoshi Ishii, Tomokazu Fukuda
Summary: Testosterone signaling affects the focal adhesion pathway by regulating AR gene expression, with caveolin-1 as a target of AR regulation. This study provides important data resources for the discovery of new therapeutic targets for testosterone-related diseases.
Article
Biochemistry & Molecular Biology
Tetsuya Sakajiri, Masatoshi Nakatsuji, Yoshiaki Teraoka, Kosuke Furuta, Katsuya Ikuta, Kotoe Shibusa, Eriko Sugano, Hiroshi Tomita, Takashi Inui, Takaki Yamamura
Summary: The study investigates the interaction mechanism between ceruloplasmin and transferrin mediated by zinc. The findings suggest that zinc may play a role in the transfer of iron between ceruloplasmin and transferrin.
