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Takuto Kojima
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Journal Articles

3D CNN and grad-CAM based visualization for predicting generation of dislocation clusters in multicrystalline silicon

Kyoka Hara, Takuto Kojima, Kentaro Kutsukake, Hiroaki Kudo, Noritaka Usami
Journal: APL Machine Learning
APL Mach. Learn. 1, 036106 (2023)
https://doi.org/10.1063/5.0156044
Published: July 2023
View article titled, 3D CNN and grad-CAM based visualization for predicting generation of dislocation clusters in multicrystalline silicon
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Journal Articles

A machine learning-based prediction of crystal orientations for multicrystalline materials

Kyoka Hara, Takuto Kojima, Kentaro Kutsukake, Hiroaki Kudo, Noritaka Usami
Journal: APL Machine Learning
APL Mach. Learn. 1, 026113 (2023)
https://doi.org/10.1063/5.0138099
Published: May 2023
View article titled, A machine learning-based prediction of crystal orientations for multicrystalline materials
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Includes: Supplementary data
Journal Articles

Study on electrical activity of grain boundaries in silicon through systematic control of structural parameters and characterization using a pretrained machine learning model

Yusuke Fukuda, Kentaro Kutsukake, Takuto Kojima, Yutaka Ohno, Noritaka Usami
Journal: Journal of Applied Physics
J. Appl. Phys. 132, 025102 (2022)
https://doi.org/10.1063/5.0086193
Published: July 2022
View article titled, Study on electrical activity of grain boundaries in silicon through systematic control of structural parameters and characterization using a pretrained machine learning model
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Includes: Supplementary data
Journal Articles

Direct prediction of electrical properties of grain boundaries from photoluminescence profiles using machine learning

Kentaro Kutsukake, Kazuki Mitamura, Noritaka Usami, Takuto Kojima
Journal: Applied Physics Letters
Appl. Phys. Lett. 119, 032105 (2021)
https://doi.org/10.1063/5.0049847
Published: July 2021
View article titled, Direct prediction of electrical properties of grain boundaries from photoluminescence profiles using machine learning
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Includes: Supplementary data
Journal Articles

Determination of carrier recombination velocity at inclined grain boundaries in multicrystalline silicon through photoluminescence imaging and carrier simulation

Kazuki Mitamura, Kentaro Kutsukake, Takuto Kojima, Noritaka Usami
Journal: Journal of Applied Physics
J. Appl. Phys. 128, 125103 (2020)
https://doi.org/10.1063/5.0017823
Published: September 2020
View article titled, Determination of carrier recombination velocity at inclined grain boundaries in multicrystalline silicon through photoluminescence imaging and carrier simulation
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Journal Articles

Temperature-dependent recombination velocity analysis on artificial small angle grain boundaries using electron beam induced current method

Takuto Kojima, Tomihisa Tachibana, Yoshio Ohshita, Ronit R. Prakash, Takashi Sekiguchi, Masafumi Yamaguchi
Journal: Journal of Applied Physics
J. Appl. Phys. 119, 065302 (2016)
https://doi.org/10.1063/1.4940709
Published: February 2016
View article titled, Temperature-dependent recombination velocity analysis on artificial small angle grain boundaries using electron beam induced current method
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Journal Articles

Annealing effects on recombinative activity of nickel at direct silicon bonded interface

Takuto Kojima, Yoshio Ohshita, Masafumi Yamaguchi
Journal: AIP Advances
AIP Advances 5, 097140 (2015)
https://doi.org/10.1063/1.4931083
Published: September 2015
View article titled, Annealing effects on recombinative activity of nickel at direct silicon bonded interface
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Journal Articles

Optical DLTS for the study of recombination centers in GaAsN grown by chemical beam epitaxy

Hiroyuki Kowaki, Kan-Hua Lee, Takuto Kojima, Makoto Inagaki, Kazuma Ikeda, Boussairi Bouzazi, Nobuaki Kojima, Yoshio Ohshita, Masafumi Yamaguchi, N. J. Ekins-Daukes
Journal: AIP Conference Proceedings
AIP Conf. Proc. 1556, 41–44 (2013)
https://doi.org/10.1063/1.4822195
Published: September 2013
View article titled, Optical DLTS for the study of recombination centers in GaAsN grown by chemical beam epitaxy
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Journal Articles

Evaluation of defects generation in crystalline silicon ingot grown by cast technique with seed crystal for solar cells

Tomihisa Tachibana, Takashi Sameshima, Takuto Kojima, Koji Arafune, Koichi Kakimoto, Yoshiji Miyamura, Hirofumi Harada, Takashi Sekiguchi, Yoshio Ohshita, Atsushi Ogura
Journal: Journal of Applied Physics
J. Appl. Phys. 111, 074505 (2012)
https://doi.org/10.1063/1.3700250
Published: April 2012
View article titled, Evaluation of defects generation in crystalline silicon ingot grown by cast technique with seed crystal for solar cells
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