Search Results - "Kojima, Takuto"

Direct prediction of electrical properties of grain boundaries from photoluminescence profiles using machine learning by Kutsukake, Kentaro, Mitamura, Kazuki, Usami, Noritaka, Kojima, Takuto

“…We present a machine learning model to directly predict the carrier recombination velocity, vGB, at the grain boundary (GB) from the measured photoluminescence…”
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Multicrystalline informatics: a methodology to advance materials science by unraveling complex phenomena by Usami, Noritaka, Kutsukake, Kentaro, Kojima, Takuto, Kudo, Hiroaki, Yokoi, Tatsuya, Ohno, Yutaka

“…Multicrystalline materials play a crucial role in our society. However, their microstructure is complicated, and there is no universal approach to achieving…”
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3D CNN and grad-CAM based visualization for predicting generation of dislocation clusters in multicrystalline silicon by Hara, Kyoka, Kojima, Takuto, Kutsukake, Kentaro, Kudo, Hiroaki, Usami, Noritaka

“…We propose a machine learning-based technique to address the crystallographic characteristics responsible for the generation of crystal defects. A…”
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A machine learning-based prediction of crystal orientations for multicrystalline materials by Hara, Kyoka, Kojima, Takuto, Kutsukake, Kentaro, Kudo, Hiroaki, Usami, Noritaka

“…We established a rapid, low-cost, and accurate technique to measure crystallographic orientations in multicrystalline materials by optical images and machine…”
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Effect of oxygen precipitation through annealing process on lifetime degradation by Czochralski-Si crystal growth conditions by Kinoshita, Kosuke, Kojima, Takuto, Onishi, Kohei, Ohshita, Yoshio, Ogura, Atsushi

“…In this study, the effects of oxygen precipitation on the minority carrier lifetime were evaluated in conjunction with crystal growth conditions. It was…”
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Distribution of light-element impurities in Si crystals grown by seed-casting method by Nakayama, Ryohei, Kojima, Takuto, Ogura, Atsushi, Kutsukake, Kentaro

“…We investigated the distributions of interstitial oxygen (Oi) and substitutional carbon (Cs) in high-performance (HP) multicrystalline Si (mc-Si) and…”
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Novel beta-glucocerebrosidase chaperone compounds identified from cell-based screening reduce pathologically accumulated glucosylsphingosine in iPS-derived neuronal cells by Naito, Yusuke, Sakamoto, Sou, Kojima, Takuto, Homma, Misaki, Tanaka, Maiko, Matsui, Hideki

“…The beta-glucocerebrosidase (GBA1) gene encodes the lysosomal beta-glucocerebrosidase (GCase) that metabolizes the lipids glucosylceramide (GlcCer) and…”
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Evaluation of oxygen precipitation behavior in n-type Czochralski-Si for photovoltaic by infrared tomography: Effects of carbon concentration and annealing process conditions by Kinoshita, Kosuke, Kojima, Takuto, Kobayashi, Hiroto, Ohshita, Yoshio, Ogura, Atsushi

“…In this study, we evaluated the effects of carbon and annealing process conditions on the oxygen precipitation in an n-type Czochralski (Cz) wafer for solar…”
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Data-Driven Optimization and Experimental Validation for the Lab-Scale Mono-Like Silicon Ingot Growth by Directional Solidification by Liu, Xin, Dang, Yifan, Tanaka, Hiroyuki, Fukuda, Yusuke, Kutsukake, Kentaro, Kojima, Takuto, Ujihara, Toru, Usami, Noritaka

“…The casting mono-like silicon (Si) grown by directional solidification (DS) is promising for high-efficiency solar cells. However, high dislocation clusters…”
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Evaluation of saw damage using diamond-coated wire in crystalline silicon solar cells by photoluminescence imaging by Kinoshita, Kosuke, Kojima, Takuto, Suzuki, Ryota, Kawatsu, Tomoyuki, Nakamura, Kyotaro, Ohshita, Yoshio, Ogura, Atsushi

“…Si ingots were sliced using a diamond-coated wire, and saw damage was observed even after damage removal etching and texturization. Since invisible microscopic…”
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Annealing effects on recombinative activity of nickel at direct silicon bonded interface by Kojima, Takuto, Ohshita, Yoshio, Yamaguchi, Masafumi

“…By performing capacitance transient analyses, the recombination activity at a (110)/(100) direct silicon bonded (DSB) interface contaminated with nickel…”
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Origin of recombination activity at small angle grain boundaries in multicrystalline silicon using multi-seed casting growth method by Kojima, Takuto, Tachibana, Tomihisa, Ohshita, Yoshio, Prakash, Ronit R., Sekiguchi, Takashi, Yamaguchi, Masafumi

“…The effect of misorientation on the recombination activity of tilt small angle grain boundaries was studied by temperature-dependent electron beam induced…”
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Nickel distribution and recombination activity in as-grown and annealed multicrystalline silicon by Kojima, Takuto, Tachibana, Tomihisa, Kojima, Nobuaki, Ohshita, Yoshio, Arafune, Koji, Ogura, Atsushi, Yamaguchi, Masafumi

“…To study the impact of annealing on the nickel distribution and recombination activity at Σ3n coincident site lattice grain boundaries (CSL-GBs) in…”
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Impact of Light-Element Impurities on Crystalline Defect Generation in Silicon Wafer by Tachibana, Tomihisa, Sameshima, Takashi, Kojima, Takuto, Arafune, Koji, Kakimoto, Koichi, Miyamura, Yoshiji, Harada, Hirofumi, Sekiguchi, Takashi, Ohshita, Yoshio, Ogura, Atsushi

“…In multi-crystalline silicon grown by unidirectional solidification, there are many origins of crystalline defects. In this study, we investigated the effect…”
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Ion Shower Doping Technique for Selective Emitter Structure in Crystalline Silicon Solar Cells by Hashiguchi, Hiroki, Tachibana, Tomihisa, Aoki, Mari, Kojima, Takuto, Ohshita, Yoshio, Ogura, Atsushi

“…For realizing low-cost and high-conversion-efficiency silicon solar cells, we propose an ion shower doping technique for fabricating conventional and selective…”
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Capsule-endoscopic findings of ulcerative colitis patients by Higurashi, Takuma, Endo, Hiroki, Yoneda, Masato, Hosono, Kunihiro, Sakai, Eiji, Takahashi, Hirokazu, Inamori, Masahiko, Uchiyama, Shiori, Kojima, Takuto, Kawana, Kenichi, Natsumeda, Yutaka, Nagase, Hajime, Nakajima, Atsushi

“…Ulcerative colitis (UC) is a chronic inflammatory bowel disease characterized by diffuse mucosal inflammation, traditionally regarded as being limited to the…”
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Using pretrained machine learning models to predict luminous and solar transmittance controllability of liquid crystal/polymer composites from microstructural images by Kakiuchida, Hiroshi, Suzuki, Kensuke, Kojima, Takuto

“…Polarized optical microscopy (POM) images of polymer network liquid crystals (PNLCs) were first analyzed using a pretrained machine learning model for feature…”
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Hepatic Portal Venous Gas Development Following Percutaneous Endoscopic Gastrostomy by Kadomatsu, Yuichiro, Kojima, Takuto, Kohara, Mana, Inamori, Masahiko

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Impact of Light-Element Impurities on Crystalline Defect Generation in Silicon Wafer by Tachibana, Tomihisa, Sameshima, Takashi, Kojima, Takuto, Arafune, Koji, Kakimoto, Koichi, Miyamura, Yoshiji, Harada, Hirofumi, Sekiguchi, Takashi, Ohshita, Yoshio, Ogura, Atsushi

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Multicrystalline Informatics Applied to Multicrystalline Silicon for Unraveling the Microscopic Root Cause of Dislocation Generation by Yamakoshi, Kenta, Ohno, Yutaka, Kutsukake, Kentaro, Kojima, Takuto, Yokoi, Tatsuya, Yoshida, Hideto, Tanaka, Hiroyuki, Liu, Xin, Kudo, Hiroaki, Usami, Noritaka

“…A comprehensive analysis of optical and photoluminescence images obtained from practical multicrystalline silicon wafers is conducted, utilizing various…”
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