Search Results - "Yoshitake, Tsuyoshi"

Diamond/β-Ga2O3 pn heterojunction diodes fabricated by low-temperature direct-bonding by Sittimart, Phongsaphak, Ohmagari, Shinya, Matsumae, Takashi, Umezawa, Hitoshi, Yoshitake, Tsuyoshi

“…Heterojunctions consisting of p-type diamond substrates and thin exfoliated n-type β-Ga2O3 layers were fabricated at a low temperature using a direct-bonding…”
Get full text

Near- and far-field Raman spectroscopic studies of nanodiamond composite films deposited by coaxial arc plasma by M. Ali, Ali, Deckert-Gaudig, Tanja, Egiza, Mohamed, Deckert, Volker, Yoshitake, Tsuyoshi

“…Raman spectroscopic studies on nanodiamond composite (NDC) films, comprising nano-sized diamond grains and an amorphous carbon (a-C) matrix, deposited by…”
Get full text

Enhanced in-plane uniformity and breakdown strength of diamond Schottky barrier diodes fabricated on heteroepitaxial substrates by Sittimart, Phongsaphak, Ohmagari, Shinya, Yoshitake, Tsuyoshi

“…In this study, pseudo-vertical diamond Schottky barrier diodes (SBDs) were fabricated on heteroepitaxial substrates and a metal impurity-incorporated buffer…”
Get full text

Application of nitrogen-doped ultrananocrystalline diamond/hydrogenated amorphous carbon composite films for ultraviolet detection by Zkria, Abdelrahman, Gima, Hiroki, Yoshitake, Tsuyoshi

“…Nitrogen-doped ultrananocrystalline diamond/hydrogenated amorphous carbon (UNCD/a-C:H) films were grown by coaxial arc plasma deposition in the ambient of…”
Get full text

Monothetic Analysis and Response Surface Methodology Optimization of Calcium Alginate Microcapsules Characteristics by Anani, Joshua, Noby, Hussien, Zkria, Abdelrahman, Yoshitake, Tsuyoshi, ElKady, Marwa

“…Owing to bio-polymer's low-cost, environmental friendliness and mechanically stable nature, calcium alginate microcapsules have attracted much interest for…”
Get full text

Impedance spectroscopy analysis of n-type (nitrogen-doped) ultrananocrystalline diamond/p-type Si heterojunction diodes by Zkria, Abdelrahman, Shaban, Mahmoud, Abubakr, Eslam, Yoshitake, Tsuyoshi

“…Heterojunction diodes are constructed by growing n-type (nitrogen-doped) ultrananocrystalline diamond (UNCD)/hydrogenated amorphous carbon (a-C:H) composite…”
Get full text

Impact of Laser‐Induced Graphitization on Diamond Schottky Barrier Diodes by Iwao, Tomoki, Sittimart, Phongsaphak, Yoshitake, Tsuyoshi, Umezawa, Hitoshi, Ohmagari, Shinya

“…Pseudovertical Schottky barrier diodes (SBDs) are fabricated on a single‐crystal diamond substrate. Herein, the structural and electrical influence of…”
Get full text

Temperature-dependent current-voltage characteristics and ultraviolet light detection of heterojunction diodes comprising n-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite films and p-type silicon substrates by Zkria, Abdelrahman, Yoshitake, Tsuyoshi

“…Heterojunction diodes comprising poorly (1 at. %) nitrogen-doped n-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite (UNCD/a-C:H) films…”
Get full text

Corrosion‐Resistive and Low Specific Contact Resistance Ohmic Contacts to Semiconducting Diamonds Using Nanocarbon Electrodes by Mylo Valappil, Sreenath, Zkria, Abdelrahman, Ohmagari, Shinya, Naragino, Hiroshi, Kato, Hiromitsu, Yoshitake, Tsuyoshi

“…The realization of diamond‐based advanced devices is interrelated with the fabrication of practical ohmic contacts. Contrary to boron‐doped, the…”
Get full text

Effects of substrate temperature and intermediate layer on adhesion, structural and mechanical properties of coaxial arc plasma deposition grown nanodiamond composite films on Si substrates by Ali, Ali M., Egiza, Mohamed, Murasawa, Koki, Sugita, Hiroaki, Deckert-Gaudig, Tanja, Deckert, Volker, Yoshitake, Tsuyoshi

“…Low-temperature fabrication of nanodiamond films on untreated silicon substrates, which are preferred substrates and widely employed in industry, can extend…”
Get full text

Photovoltaic, capacitance-voltage, conductance-voltage, and electrical impedance characteristics of p-type silicon/intrinsic-silicon/n-type semiconducting iron disilicide heterostructures built via facing target direct-current sputtering by Chaleawpong, Rawiwan, Promros, Nathaporn, Charoenyuenyao, Peerasil, Borwornpornmetee, Nattakorn, Sittisart, Pattarapol, Sittimart, Phongsaphak, Tanaka, Yūki, Yoshitake, Tsuyoshi

“…•p-Si/i-Si/n-type β-FeSi2 junctions built by facing target direct-current sputtering.•Dark current density-voltage (J-V) reveals a rectifying action and…”
Get full text

Nanocarbon ohmic electrodes fabricated by coaxial arc plasma deposition for phosphorus-doped diamond electronics application by Valappil, Sreenath Mylo, Ohmagari, Shinya, Zkria, Abdelrahman, Sittimart, Phongsaphak, Abubakr, Eslam, Kato, Hiromitsu, Yoshitake, Tsuyoshi

“…n-Type (phosphorus-doped) diamond is a promising material for diamond-based electronic devices. However, realizing good ohmic contacts for phosphorus-doped…”
Get full text

Optical and structural characterization of ultrananocrystalline diamond/hydrogenated amorphous carbon composite films deposited via coaxial arc plasma by Zkria, Abdelrahman, Abdel-Wahab, Fouad, Katamune, Yuki, Yoshitake, Tsuyoshi

“…Ultrananocrystalline diamond/hydrogenated amorphous carbon composite films were deposited in the ambient of hydrogen by coaxial arc plasma deposition. The film…”
Get full text

Characterization and design optimization of heterojunction photodiodes comprising n-type ultrananocrystalline diamond/hydrogenated amorphous carbon composite and p-type Si by Shaban, Mahmoud, Zkria, Abdelrahman, Yoshitake, Tsuyoshi

“…In this paper, we characterize and optimize design of a candidate ultraviolet photodiode based on nitrogen-doped ultrananocrystalline diamond hydrogenated…”
Get full text

Temperature-Dependent Impedance Spectra of Nitrogen-Doped Ultrananocrystalline Diamond Films Grown on Si Substrates by Shaban, Mahmoud, Zkria, Abdelrahman, Yoshitake, Tsuyoshi

“…Nitrogen-doped ultrananocrystalline diamond/hydrogenated amorphous-carbon (UNCD/a-C:H) composite films, grown on Si substrates by the coaxial arc plasma gun,…”
Get full text

Negative bias effects on deposition and mechanical properties of ultrananocrystalline diamond/amorphous carbon composite films deposited on cemented carbide substrates by coaxial arc plasma by Ali, Ali M., Egiza, Mohamed, Murasawa, Koki, Fukui, Yasuo, Gonda, Hidenobu, Sakurai, Masatoshi, Yoshitake, Tsuyoshi

“…Ultrananocrystalline diamond/amorphous carbon composite (UNCD/a-C) films were deposited on negatively biased cemented carbide (WC-Co) substrates by coaxial arc…”
Get full text

Laser-Induced Phosphorus-Doped Conductive Layer Formation on Single-Crystal Diamond Surfaces by Abubakr, Eslam, Zkria, Abdelrahman, Ohmagari, Shinya, Katamune, Yu̅ki, Ikenoue, Hiroshi, Yoshitake, Tsuyoshi

“…A laser-induced doping method was employed to incorporate phosphorus into an insulating monocrystalline diamond at ambient temperature and pressure conditions…”
Get full text

Electrical properties of boron-incorporated ultrananocrystalline diamond/hydrogenated amorphous carbon composite films by Katamune, Yūki, Takeichi, Satoshi, Ohtani, Ryota, Koizumi, Satoshi, Ikenaga, Eiji, Kamitani, Kazutaka, Sugiyama, Takeharu, Yoshitake, Tsuyoshi

“…Boron-incorporated ultrananocrystalline diamond/hydrogenated amorphous carbon composite (UNCD/a-C:H) films were deposited by coaxial arc plasma deposition with…”
Get full text

Defect and field-enhancement characterization through electron-beam-induced current analysis by Umezawa, Hitoshi, Gima, Hiroki, Driche, Khaled, Kato, Yukako, Yoshitake, Tsuyoshi, Mokuno, Yoshiaki, Gheeraert, Etienne

“…To investigate the effects of defects and field enhancement in diamond power devices, a biased Schottky barrier diode was characterized by…”
Get full text

Hard coating of ultrananocrystalline diamond/nonhydrogenated amorphous carbon composite films on cemented tungsten carbide by coaxial arc plasma deposition by Naragino, Hiroshi, Egiza, Mohamed, Tominaga, Aki, Murasawa, Koki, Gonda, Hidenobu, Sakurai, Masatoshi, Yoshitake, Tsuyoshi

“…Ultrananocrystalline diamond (UNCD)/nonhydrogenated amorphous carbon (a-C) composite (UNCD/a-C) films were deposited on cemented carbide containing Co by…”
Get full text