PUBLICATIONS
業績

国際会議

  • 2016年 〜

    T. Sogabe, C.-Y. Hung, R. Tamaki, S. Tomic, N. Ekins-Daukes, Y. Okada :“1AO.2.3 Demonstration of GaAs-Based Energy-Transfer Ratchet Intermediate-Band Solar Cell”, EU PVSEC 2020 (2020.9.7-11)

  • Tomah Sogabe “Hybrid Quantum Dynamic Programming and Beyond”, IBM Quantum Summit 2020(2020.9.17)

  • (Invited) Tomah Sogabe :“Implementing Classical-Quantum Hybrid Machine Learning Algorithms”, The International Workshop on Quantum Computing, Information Processing and Machine Learning (IWQCIPML) December 2-4, 2019. Taipei, Taiwan

  • K. Terada, T. Togawa, F. Ozeki, K. Sakamoto, T. Sogabe and K. Yamaguchi : “Sunlight Concentration Properties of InAs/InAsSb Ultrahigh-Density Quantum -Dot Solar Cells”, The 46th IEEE Photovoltaic Specialists Conference, (June 17-21, 2019), Chicago, B8-776.

  • H. Ichikawa, S. Yokogawa, Y. Kawakita, K. Sawada, T. Sogabe, A. Minegishi, H. Uehara : “An Approach to Renewable-Energy Dominant Grids via Distributed Electrical Energy   Platform for IoT Systems”, IEEE Smart Grid Comm (2019).
    DOI: 10.1109/SmartGridComm.2019.8909762

  • Kei Takahashi, Tomah Sogabe : “Online optimization of AGV transport systems using deep reinforcement learning”, p53-57, NCSS: International Workshop on Networking, Computing, Systems, and Software, p63-68 (November 26-29, 2019),Nagasaki, Japan

  • Dinesh Bahadur Malla, Katsuyoshi Sakamoto, Tomah Sogabe : “Multi-agent Based Energy Balancing Management Algorithm for Smart Grid System”, p58-62, NCSS: International Workshop on Networking, Computing, Systems, and Software, p63-68 (November 26-29, 2019),Nagasaki, Japan

  • Koudai Shiba, Katsuyoshi Sakamoto, Tomah Sogabe : “Variational Quantum Support Vector Machine based on Deutsch-Jozsa Ranking”, NCSS: International Workshop on Networking, Computing, Systems, and Software, p63-68 (November 26-29, 2019),Nagasaki, Japan

  • Tomoaki Kimura, Katsuyoshi Sakamoto, Tomah Sogabe : “Development of Alpha Zero-based Reinforcement Learning Algorithm for Solving Partially Observable Markov Decision Process (POMDP) Problem”, p69-73, NCSS: International Workshop on Networking, Computing, Systems, and Software, p63-68 (November 26-29, 2019),Nagasaki, Japan

  • Masaya Watabe, Koudai Shiba, Katsuyoshi Sakamoto, Tomah Sogabe : “Quantum Circuit Learning Using Error Backpropagation”, p74-82, NCSS: International Workshop on Networking, Computing, Systems, and Software, p63-68 (November 26-29, 2019),Nagasaki, Japan

  • S.Tatsugi, R.Sugiyama, T.Kato, T.Sogabe and K.Yamaguchi, “Photoluminescence Mapping of In-Plane Ultrahigh-Density InAs Quantum Dots for Solar Cell Applications”, The 7th World Conference on Photovoltaic Energy Conversion (WCPEC-7), 2018.

  • K.Yamaguchi, A.Makaino, K.Sakamoto and T.Sogabe, “Self-Formation of InAs Quantum Dots on Oxide/Semiconductor Substrates by Molecular Beam Deposition”, Compound Semiconductor Week 2018 (CSW-2018), 2018.

  • T.Sogabe, D.B.Malla, S.Takayama, S.Shin, K.Sakamoto, K.Yamaguchi, M.Sogabe, Y.Okada and T.Hirata, “Smart Grid Optimization By Deep Reinforcement Learning Over Discrete And Continuous Action Space”, The 7th World Conference on Photovoltaic Energy Conversion (WCPEC-7), 2018.

  • D.Malla, K.Sakamoto, K.Yamaguchi, S.Yokogawa and T.Sogabe, “Hybrid Policy Gradient for Deep Reinforcement Learning”, NCSS: International Workshop on Networking, Computing, Systems, and Software, 2018.

  • T.Hirata, D.Malla, K.Sakamoto, K. Yamaguch, Y. Okada and T.Sogabe, “Smart Grid Optimization by Deep Reinforcement Learning over Discrete and Continuous Action Space”, NCSS: International Workshop on Networking, Computing, Systems, and Software, 2018.

  • K.Takahashi, T.Numajiri, K.Sakamoto, K.Yamaguchi and T.Sogabe, “Development of generic CNN deep learning method using feature graph”, CANDAR2018, 2018

  • R.Sugiyama, N. Akimoto, T. Sogabe and Koichi Yamaguchi, “Evaluation of In-Plane Ultrahigh-Density InAs Quantum Dots on GaAsSb/GaAs(001) for Solar Cell Applications”, 44th IEEE Photovoltaic Specialists Conference(PVSC44) (2017).

  • T.Sogabe, K. Nii, K. Sakamoto, K. Yamaguchi, Y. Okada, “Hot Carrier Transportation Dynamics in InAs/GaAs Quantum Dot Solar Cell”, 44th IEEE Photovoltaic Specialists Conference(PVSC44) (2017).

  • Y.Okada , Y.Shoji, C-Y, Hung , D.J. Farrell, T. Sogabe, “High density quantum dot solar cells for concentrating photovoltaics (CPV)”, IEEE International Conference on Environment and Electrical Engineering and IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe) (2017)

  • Makaino, K.Sakamoto, T.Sogabe and K.; Yamaguchi, “Self-formation of in-plane ultrahigh-density InAs quantum dots and their photoluminescence properties”, Compound Semiconductor Week (2017)

  • T. Sogabe, H. Ichikawa, S. Katsuyoshi, Y. Koichi, M. Sogabe, T. Sato, Y. Suwa, Optimization of Decentralized Renewable Energy System by Weather Forecasting and Deep Machine Learning Techniques, IEEE PES-ISGT-2016 Asian Conference, 2016.12.1,

  • K. Nii, Y. Minami, K. Sakamoto, T. Sogabe, K. Yamaguchi, “Photoluminescence and Photovoltaic Properties of Ultrahigh Density InAs Quantum Dots on InAsSb/GaAs(001)”, The 26th Photovotaic Sicnece and Engineering Conference (PVSEC-26), 2016.10.24-28, Singapore, 1_1-0017.

  • Bernice Mae Yu Jeco, T. Sogabe, Y.Okada, Spatial Distribution of Temperature Dependent luminescence coupling Current in InGaP/GaAs/Ge Triple Junction Solar Cells, PVSEC-26 Singapore, 2016.10.24,

  • T. Sogabe, K. Nii, K. Sakamoto, K. Yamaguchi, Y. Okada, Investigation of Hot Carrier Transportation Dynamics in InAs/GaAs Quantum Dot Solar Cell, PVSEC-26 Singapore, 2016.10.24

  • Tomah Sogabe, (Invited)Investigation of Hot Carrier Transportation Dynamics in InAs/GaAs Quantum Dot Solar Cell, High Efficiency Materials for Photovoltaics workshop,  2016.9.15,

  • Tomah Sogabe, (Invited)”Epitaxial lift off (ELO) thin film InAs/GaAs quantum dot solar cell: current status and strategies toward 30% efficiency”, 2016 EMN Prague Meeting , 2016.6.21.

  • Mae. Yu Jeco , T. Sogabe , A.Ogura , N. Miyashita, R.Tamaki, Y. Okada, Laser beam induced current (LBIC) mapping of InGaP/GaAs/Ge triple junction solar cells with luminescence coupling, 43rd IEEE Photovoltaics Specialists Conference, 2016.6,

  • Ogura, M. Mori, K.Yoshida, T. Sogabe, and Y. Okada, “Device simulation of thin-film intermediate-band solar cell using drift-diffusion model and FDTD method (oral)”, SPIE Photonics West OPTO 2016, 2016.2.

     

  • 2011年〜2016年

    Sogabe, A.Ogura, Y. Okada,Q.Shen, Y.Kuga, T. Toyoda,S.Tomić, P. D. McNaughter, P. O’Brien Experimental analysis of hot state multiple exciton generation in PbSe quantum dots and its transportation modelling, 5th International Workshop on Epitaxial Growth and Fundamental Properties of Semiconductor Nanostructures, Hsinchu, Taiwan (Sep,2015)

  • C-Y.Hung, Sogabe, R.Tamaki, N.Miyashita,Y.Okada Light absorption via discrete states in GaAs solar cell embedded with Er complex, 5th International Workshop on Epitaxial Growth and Fundamental Properties of Semiconductor Nanostructures, Hsinchu, Taiwan (Sep,2015)

  • Mori, A. Ogura, T. Sogabe and Y. Okada, Device Simulation of Thin Film Solar Cell Characteristics considering Fabry-Perot Cavity Effect, International Nano-Optoelectronics Workshop 2015, Tokyo, Japan (August,2015)

  • Tomić,T.Sogabe, Y.Okada. Quantum dot array based intermediate band solar cell: effect of light concentration, The 42th IEEE Photovoltaic Specialists Conference, New Orleans, USA (June 2015)

  • Sogabe, Y. Shoji, C-Y. Hung, D. J. Farrell, and Y. Okada, “InAs/GaAs Quantum Dot Solar Cell with 26.8% Efficiency Achieved Through Current Constraint Engineering”, The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto (Nov. 2014)

  • Ogura,T. Sogabe, and Y. Okada, “Evaluation of Conversion Efficiency for Multijunction Solar Cell with Luminescent Coupling Considering Series and Shunt Resistance Effects”, The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto (Nov. 2014).

  • C-Y. Hung, Sogabe, N. Miyashita, S. Naitoh, and Y. Okada, “Fabrication of Hybrid ErAs:InAs Quantum Dots for Solar Cell Application”, The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto (Nov. 2014)

  • Tomić, T. Sogabe, and Y. Okada, “Theory of Quantum Coupling and Efficiency in QD Array Based Intermediate Band Solar Cells”, The 6th World Conference on Photovoltaic Energy Conversion (WCPEC-6), Kyoto (Nov. 2014)

  • Sogabe, Y.Shoji, P.Mulder, J.Schermer, E.Tamayo,Y.Okada, “Enhancement of current collection in epitaxial lift-off InAs/GaAs quantum dot thin film solar cell and concentrated photovoltaic study”, The 40th IEEE Photovoltaic Specialists Conference, Denver, USA(June 2014)

  • Ogura, T. Sogabe, D. J. Farrell, Y. Okada, “Analysis of GaAs/AlGaAs quantum nanodisk solar cell with intermediate band carrier transportation”, The 40th IEEE Photovoltaic Specialists Conference, Denver, USA (June 2014)

  • C-Y.Hung, Sogabe, N.Miyashita, Y.Shoji, S.Naito, Y.Okada, “Local conductivity characteristics of individual ErAs nanoparticle for solar cell tunnel junction application”, The 40th IEEE Photovoltaic Specialists Conference, Denver, USA (June 2014)

  • Sogabe, A. Ogura, C-Y Hung, V. Evstropov, M.Mintairov, M. Shvarts Y.Okada,  Self-consistent modeling and bias dependent spectral response measurement of luminescence coupling effect in concentrator III-V multijunction solar cells (MJSC), 10th Conference on Concentrator Photovoltaics (CPV-10), Albuquerque, New Mexico, USA ( April, 2014,)

  • Ogura,T. Sogabe, C-Y. Hung, Y. Okada, Extraction of electrical parameters in triple-junction solar cell from voltage dependent spectral response without light bias, 10th Conference on Concentrator Photovoltaics (CPV-10) , Albuquerque, New Mexico, USA (April, 2014)

  • Tomić , T.Sogabe, Y. Okada, “In-plane coupling effect on efficiency of InAs/GaAs quantum dots arrays for intermediate band solar cell”, MRS Spring meeting, Boston, USA (March 2014)

  • Sogabe, T. Kaizu, S. Tomic and Y. Okada, GaAs/AlGaAs quantum nanodisks in quantum wire array for intermediate band solar cell, The 6th International Symposium on Innovative Solar Cells, Tokyo Tech Front (January 20, 2014)

  • Sogabe, Y .Shoji, M. Ohba, N. Shunya, N. Miyashita, C-Y. Hung, A. Ogura, and Y. Okada, “Fabrication and Characterization of GaAs Tunnel Diode and ErAs Nanoparticles Enhanced GaAs Tunnel Diode for Multijunction Solar Cell”, Materials Research Society Symposium Proceedings DOI: 10.1557/opl.2014.4. 1602 (2014)

  • Okada, Y. Shoji, R. Tamaki, and T. Sogabe, “Operation Characteristics of InAs Quantum Dot Intermediate-Band Solar Cells”, MRS Fall Meeting, , Boston, USA (Nov. 2013 )

  • Sogabe, A. Ogura, C-Y. Hung, Y.Okada “Self-consistent Approach for Modeling the Luminescent Coupling in Concentrator III-V Multijunction Solar Cells”, The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23), Taipei, Taiwan (Oct 30, 2013)

  • Ogura, T. Sogabe,Y. Saito, A. Kotagiri, and Y. Okada, “Electrical Parameters Extraction from Voltage Dependent Spectral Response in Multi-junction Solar Cells without Bias Light”, The 23rd Photovoltaic Science and Engineering Conference (PVSEC-23) ,Taipei, Taiwan (Oct 30, 2013)

  • Sogabe, Y. Shoji, M. Ohba, Y. Okada, “Fabrication and numerical simulation of GaAs and ErAs enhanced GaAs tunnel diodes for multijunction solar cells, 2013 JSAP-MRS Joint Symposia, , Kyoto, Japan (Sept 18. 2013)

  • Okada, K.Yoshida, Y. Shoji and T. Sogabe, “Operation Characteristics of Quantum Dot Intermediate-Band Solar Cells under Sunlight Concentration”, The 55th Electronic Materials Conference (EMC), Univ. Notre Dame, USA (June 2013)

  • Tomic, T. Sogabe, Y.Okada, “In-Plane Coupling Effect In Inas/Gaas Quantum Dots Arrays For Intermediate Band Solar Cell”, The 39th IEEE Photovoltaic Specialists Conference (PVSC) , Tampa, USA (June , 2013)

  • Ogura, T. Sogabe, M. Ohba, and Y. Okada, “Self-consistent Fitting of Electrical Parameters for InGaAs/Ge Dual Junction Solar Cells from Bias-dependent Spectral Response”, 9th Conference on Concentrator Photovoltaics (CPV-9) , Miyazaki, Japan (April, 2013)

  • Sogabe, Y. Shoji, M. Ohba , H-F. Hong, C-H. Wu, C-T. Kuo, and Y. Okada, “First Demonstration of InAs/GaAs Quantum Dot CPV Module”, 9th Conference on Concentrator Photovoltaics (CPV-9) , Miyazaki, Japan (April, 2013)

  • Tomic, T.Sogabe,Y.Okada, “Modelling of Vertical and In-plane Quantum Dots Arrays for High Efficiency Solar Cells”, 2012 MRS Fall Meeting, Boston, USA (Nov. 2012)

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