Search Results - "Kurokawa, Yasuyoshi"

Tuning the Electrical Properties of Titanium Oxide Bilayers Prepared by Atomic Layer Deposition at Different Temperatures by Gotoh, Kazuhiro, Mochizuki, Takeya, Kurokawa, Yasuyoshi, Usami, Noritaka

“…Carrier‐selective contacts prepared by atomic layer deposition (ALD) have received significant attention for developing high‐efficiency solar cells. Herein,…”
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Improved conversion efficiency of p-type BaSi2/n-type crystalline Si heterojunction solar cells by a low growth rate deposition of BaSi2 by Fujiwara, Michinobu, Takahashi, Kazuma, Nakagawa, Yoshihiko, Gotoh, Kazuhiro, Itoh, Takashi, Kurokawa, Yasuyoshi, Usami, Noritaka

“…The effect of low growth rate deposition (LGD) of BaSi2 on the film quality and performance of silicon heterojunction solar cells was investigated. The total…”
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Silicon Nanowire Heterojunction Solar Cells with an Al2O3 Passivation Film Fabricated by Atomic Layer Deposition by Kato, Shinya, Kurokawa, Yasuyoshi, Gotoh, Kazuhiro, Soga, Tetsuo

“…Silicon nanowires (SiNWs) show a great potential for energy applications because of the optical confinement effect, which enables the fabrication of highly…”
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Bayesian optimization of hydrogen plasma treatment in silicon quantum dot multilayer and application to solar cells by Kumagai, Fuga, Gotoh, Kazuhiro, Miyamoto, Satoru, Kato, Shinya, Kutsukake, Kentaro, Usami, Noritaka, Kurokawa, Yasuyoshi

“…Silicon quantum dot multilayer (Si-QDML) is a promising material for a light absorber of all silicon tandem solar cells due to tunable bandgap energy in a wide…”
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Performance enhancement of droplet-based electricity generator using a CYTOP intermediate layer by Wang, Haitao, Kurokawa, Yasuyoshi, Gotoh, Kazuhiro, Kato, Shinya, Yamada, Shigeru, Itoh, Takashi, Usami, Noritaka

“…Abstract Effective strategies for improving the performance of a droplet-based electricity generator (DEG) remain a challenge. Herein, we propose to introduce…”
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Influence of post-oxidizing treatment on passivation performance on the spin-coated titanium oxide films on crystalline silicon by Luo, Hao, Nguyen, Van Hoang, Gotoh, Kazuhiro, Ajito, Saya, Hojo, Tomohiko, Kurokawa, Yasuyoshi, Akiyama, Eiji, Usami, Noritaka

“…•Post oxidizing treatment improves passivation level ofTiOx/Si heterostructures.•TiOx bulk and Si surface are oxidized after post oxidizing…”
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Fabrication of BaSi2 homojunction diodes on Nb-doped TiO2 coated glass substrates by aluminum-induced crystallization and two-step evaporation method by Kurokawa, Yasuyoshi, Yoshino, Takamasa, Gotoh, Kazuhiro, Miyamoto, Satoru, Usami, Noritaka

“…BaSi2 homojunction diodes on Nb-doped TiO2 (TiO2:Nb) coated glass substrates were fabricated using aluminum-induced crystallization (AIC) and a two-step…”
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Effect of hydrogen plasma treatment on the passivation performance of TiOx on crystalline silicon prepared by atomic layer deposition by Miyagawa, Shinsuke, Gotoh, Kazuhiro, Ogura, Shohei, Wilde, Markus, Kurokawa, Yasuyoshi, Fukutani, Katsuyuki, Usami, Noritaka

“…The authors report on the effect of hydrogen plasma treatment (HPT) on the passivation performance of titanium oxide (TiOx) on crystalline silicon (c-Si)…”
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Hydrogen concentration at a-Si:H/c-Si heterointerfaces—The impact of deposition temperature on passivation performance by Gotoh, Kazuhiro, Wilde, Markus, Kato, Shinya, Ogura, Shohei, Kurokawa, Yasuyoshi, Fukutani, Katsuyuki, Usami, Noritaka

“…We studied the effect of deposition temperature on the hydrogen distribution and the passivation performance of hydrogenated amorphous silicon (a-Si:H) coated…”
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Activation energy of hydrogen desorption from high-performance titanium oxide carrier-selective contacts with silicon oxide interlayers by Gotoh, Kazuhiro, Mochizuki, Takeya, Hojo, Tomohiko, Shibayama, Yuki, Kurokawa, Yasuyoshi, Akiyama, Eiji, Usami, Noritaka

“…The impact of hydrogen desorption on the electrical properties of TiOx on crystalline silicon (c-Si) with SiOy interlayers is studied for the development of…”
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Numerical study of Cu(In,Ga)Se2 solar cell performance toward 23% conversion efficiency by Hirai, Yoshiaki, Kurokawa, Yasuyoshi, Yamada, Akira

“…The effects of conduction band grading in a Cu(In,Ga)Se2 (CIGS) thin film with an average bandgap of 1.4 eV on solar cell performance were investigated by…”
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Effect of the Niobium-Doped Titanium Oxide Thickness and Thermal Oxide Layer for Silicon Quantum Dot Solar Cells as a Dopant-Blocking Layer by Akaishi, Ryushiro, Kitazawa, Kohei, Gotoh, Kazuhiro, Kato, Shinya, Usami, Noritaka, Kurokawa, Yasuyoshi

“…Silicon quantum dot (Si-QD) embedded in amorphous silicon oxide is used for p-i-n solar cell on quartz substrate as a photogeneration layer. To suppress…”
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Study on the Etching Characteristics and Thermal Conductivity of Porous Silicon Nanowire Arrays Using Highly Doped Silicon by Li, Haibin, Kato, Shinya, Kurokawa, Yasuyoshi, Soga, Tetsuo

“…Silicon nanowires (SiNWs) fabricated by metal-assisted chemical etching (MACE) of highly doped silicon are promising thermoelectric materials because of their…”
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Preparation and thermoelectric characterization of boron-doped Si nanocrystals/silicon oxide multilayers by Shibata, Keisuke, Kato, Shinya, Kurosawa, Masashi, Gotoh, Kazuhiro, Miyamoto, Satoru, Usami, Noritaka, Kurokawa, Yasuyoshi

“…Abstract Boron-doped silicon nanocrystals (Si-NCs)/amorphous silicon oxide (a-SiO y ) multilayers were prepared by plasma-enhanced chemical vapor deposition…”
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Effect of forming gas annealing on hydrogen content and surface morphology of titanium oxide coated crystalline silicon heterocontacts by Nakagawa, Yuta, Gotoh, Kazuhiro, Wilde, Markus, Ogura, Shohei, Kurokawa, Yasuyoshi, Fukutani, Katsuyuki, Usami, Noritaka

“…Crystalline silicon (c-Si) heterojunction solar cells using carrier-selective contacts have drawn considerable attention due to their high power conversion…”
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Nanoscale Size Control of Si Pyramid Texture for Perovskite/Si Tandem Solar Cells Enabling Solution‐Based Perovskite Top‐Cell Fabrication and Improved Si Bottom‐Cell Response by Li, Yuqing, Sai, Hitoshi, McDonald, Calum, Xu, Zhihao, Kurokawa, Yasuyoshi, Usami, Noritaka, Matsui, Takuya

“…A monolithic perovskite/silicon tandem solar cell architecture is employed to surpass the single‐junction efficiency limit. Recently, there is an increasing…”
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Core–shell yarn-structured triboelectric nanogenerator for harvesting both waterdrop and biomechanics energies by Wang, Haitao, Kurokawa, Yasuyoshi, Zhang, Jia-Han, Gotoh, Kazuhiro, Liu, Xin, Miyamoto, Satoru, Usami, Noritaka

“…Abstract Wearable energy harvesters (WEHs) have garnered significant attention recently due to their promising capabilities in powering wearable devices. In…”
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Enhancement of reflectance reduction of solar cells by a silicon nanoparticle layer on a textured silicon substrate by Kato, Shinya, Kurokawa, Yasuyoshi, Soga, Tetsuo

“…•The SiNP layer fabricated by spincoating techniques without vacuum process and annealing process.•The reflectance with SiNP layer reduces drastically to below…”
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Fabrication of Silicon Nanowire Metal-Oxide-Semiconductor Capacitors with Al2O3/TiO2/Al2O3 Stacked Dielectric Films for the Application to Energy Storage Devices by Nezasa, Ryota, Gotoh, Kazuhiro, Kato, Shinya, Miyamoto, Satoru, Usami, Noritaka, Kurokawa, Yasuyoshi

“…Silicon nanowire (SiNW) metal-oxide-semiconductor (MOS) capacitors with Al2O3/TiO2/Al2O3 (ATA) stacked dielectric films were fabricated by metal-assisted…”
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Influence of the time-dependent vapor composition on structural properties of the BaSi2 thin films fabricated by vacuum evaporation by Yoshino, Takamasa, Nakagawa, Yoshihiko, Kimura, Yuki, Fujiwara, Michinobu, Kurokawa, Yasuyoshi, Usami, Noritaka

“…We developed an original method to measure the time-dependent vapor composition, and applied this method to vacuum evaporation of BaSi2 thin films at three…”
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