Faculty Profiles - SUZUKI Atsushi

Papers - SUZUKI Atsushi

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Fabrication and Characterization of CH3NH3PbI3-x-yBrxCly Perovskite Solar Cells Reviewed

Atsushi Suzuki, Hiroshi Okada, Takeo Oku

Energies 9 ( 5 ) 376-1 - 376-11 2016.5

Fabrication and characterization of bismuth ferrite as an electron transport layer in perovskite photovoltaic devices Reviewed

Yasuhiro Shirahata, Atsushi Suzuki, Takeo Oku

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 124 ( 5 ) 602 - 605 2016.5

Language：English Publishing type：Research paper (scientific journal) Publisher：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

BiFeO3 thin films were fabricated by a simple spin-coating method as an electron transport layer in CH3NH3PbI3-based photovoltaic devices. Single-phase BiFeO3 was obtained, which was confirmed by X-ray diffraction. To characterize photovoltaic properties, BiFeO3/CH3NH3PbI3-based photovoltaic devices were fabricated by different preparation steps for CH3NH3PbI3 layer, and current density-voltage characteristics of the photovoltaic devices showed rectifying behaviors. Comparing with the BiFeO3/CH3NH3PbI3 photovoltaic device fabricated by a 1-step method, the conversion efficiency of the device fabricated by a 2-step method was improved. Bandgaps of the BiFeO3 and CH3NH3PbI3 layers were also determined from optical absorption measurements. (C) 2016 The Ceramic Society of Japan. All rights reserved.

DOI： 10.2109/jcersj2.15322

Web of Science

Electronic structures and magnetic/optical properties of metal phthalocyanine complexes Reviewed International journal

Shintaro Baba、Atsushi Suzuki、Takeo Oku

AIP Conference Proceedings 1709 020012-1 - 020012-8 2016.4

Microstructures and properties of hybrid solar cells Reviewed International journal

Kohei Suzuki、Atsushi Suzuki、Masahito Zushi、Takeo Oku

AIP Conference Proceedings 1649 96 - 101 2016.4

Fabrication and characterization of photovoltaic devices based on perovskite compounds with TiO2 nanoparticles Reviewed International journal

Masato Kanayama、Takeo Oku、Atsushi Suzuki、Masahiro Yamada、Sakiko Fukunishi、Kazufumi Kohno、Hiroki Sakamoto　

AIP Conference Proceedings 1649 84 - 88 2016.4

Fabrication and characterization of P3HT:PCBM-based thin film organic solar cells with zinc phthalocyanine Reviewed International journal

Haruto Maruhashi、Takeo Oku、Atsushi Suzuki、Tsuyoshi Akiyama、Yasuhiro Yamasaki

AIP Conference Proceedings 1649 89 - 95 2016.4

Fabrication and characterization of perovskite-type solar cells with Nb-doped TiO2 layers Reviewed International journal

Jo Saito、Takeo Oku、Atsushi Suzuki、Tsuyoshi Akiyama

AIP Conference Proceedings 1709 020027-1 - 020027-7 2016.4

Fabrication and characterization of perovskite-based CH3NH3Pb1-xGexI3, CH3NH3Pb1-xTlxI3 and CH3NH3Pb1-xInxI3 photovoltaic devices Reviewed International journal

Yuya Ohishi、Takeo Oku、Atsushi Suzuki

AIP Conference Proceedings 1709 020020-1 - 020020-8 2016.4

Low temperature fabrication of perovskite solar cells with TiO2 nanoparticle layers Reviewed International journal

Masato Kanayama、Takeo Oku、Atsushi Suzuki、Masahiro Yamada、Hiroki Sakamoto、Satoshi Minami、Kazufumi Kohno

AIP Conference Proceedings 1709 020019-1 - 020019-7 2016.4

Fabrication and photovoltaic properties of ZnO nanorods/perovskite solar cells Reviewed International journal

Yasuhiro Shirahata、Kohei Tanaike、Tsuyoshi Akiyama、Kazuya Fujimoto、Atsushi Suzuki、Jeyadevan Balachandran、Takeo Oku　

AIP Conference Proceedings 1709 020018-1 - 020018-9 2016.4

Role of bromine doping on the photovoltaic properties and microstructures of CH3NH3PbI3 perovskite solar cells Reviewed International journal

Atsushi Suzuki、Hiroshi Okada、Takeo Oku

AIP Conference Proceedings 1709 020022-1 - 020022-8 2016.4

Fabrication and photovoltaic properties of ZnO nanorods/perovskite solar cells Reviewed

Yasuhiro Shirahata, Kohei Tanaike, Tsuyoshi Akiyama, Kazuya Fujimoto, Atsushi Suzuki, Jeyadevan Balachandran, Takeo Oku

AIP Conference Proceedings 1709 020018-1 - 020018-9 2016.4

Electronic structures and magnetic/optical properties of metal phthalocyanine complexes Reviewed

Shintaro Baba, Atsushi Suzuki, Takeo Oku

AIP Conference Proceedings 1709 020012-1 - 020012-8 2016.4

Effects of chlorine addition to perovskite-type CH3NH3PbI3 photovoltaic devices Reviewed International journal

Takeo Oku、Kohei Suzuki、Atsushi Suzuki

Journal of the Ceramic Society of Japan 124 ( 3 ) 234 - 238 2016.3

Effects of chlorine addition to perovskite-type CH3NH3PbI3 photovoltaic devices Reviewed

Takeo Oku, Kohei Suzuki, Atsushi Suzuki

JOURNAL OF THE CERAMIC SOCIETY OF JAPAN 124 ( 3 ) 234 - 238 2016.3

Language：English Publishing type：Research paper (scientific journal) Publisher：CERAMIC SOC JAPAN-NIPPON SERAMIKKUSU KYOKAI

Effects of PbCl2 addition to perovskite CH3NH3PbI3 precursor solutions on the photovoltaic properties were investigated. TiO2/CH3NH3PbI3-xClx-based photovoltaic devices were fabricated, and the microstructures of the devices were investigated by X- ray diffraction. The structure analysis indicated phase transformation of the perovskite structure from cubic to tetragonal system by chlorine (Cl)-doping. External and internal quantum efficiencies were improved by a small amount of Cl- doping, which resulted in improvement of the efficiencies of the devices. This would be due to preservation of the cubic CH3NH3PbI3-xClx structure, and to expansion of energy gap and diffusion length of exitons by Cl-doping at the iodine sites. (C) 2016 The Ceramic Society of Japan. All rights reserved.

DOI： 10.2109/jcersj2.15250

Web of Science

Effects of Antimony Addition to Perovskite-type CH3NH3PbI3 Photovoltaic Devices Reviewed International journal

Takeo Oku、Yuya Ohishi、Atsushi Suzuki

Chemistry Letters 45 ( 2 ) 134 - 136 2016.2

Effects of Antimony Addition to Perovskite-type CH3NH3PbI3 Photovoltaic Devices Reviewed

Takeo Oku, Yuya Ohishi, Atsushi Suzuki

CHEMISTRY LETTERS 45 ( 2 ) 134 - 136 2016.2

Language：English Publishing type：Research paper (scientific journal) Publisher：CHEMICAL SOC JAPAN

Effects of SbI3 addition to CH3NH3PbI3 precursor solutions on the photovoltaic properties were investigated. TiO2/CH3NH3Pb1-xSbxI3-based photovoltaic devices were fabricated in air, and formation of a perovskite-type structure was confirmed by X-ray diffraction. The conversion efficiencies were improved by adding a small amount of Sb, and formation of PbI2 was suppressed by the Sb addition.

DOI： 10.1246/cl.150984

Web of Science

Fabrication and characterization of perovskite-based CH3NH3Pb1-xGexI3, CH(3)NH(3)Pb(1-x)TlxI(3) and CH3NH3Pb1-xInxI3 photovoltaic devices Reviewed

Yuya Ohishi, Takeo Oku, Atsushi Suzuki

IRAGO CONFERENCE 2015: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY 1709 020020-1 - 020020-8 2016

Language：English Publishing type：Research paper (international conference proceedings) Publisher：AMER INST PHYSICS

Perovskite-type CH3NH3PbI3-based photovoltaic devices were fabricated and characterized. Doping effects of thallium (Tl), indium (In), or germanium (Ge) element on the photovoltaic properties and surface structures of the perovskite phase were investigated. The open circuit voltage increased by Ge addition, and fill factors were improved by adding a small amount of Ge, Tl or In. In addition, the wavelength range of incident photon conversion efficiencies was expanded by the Tl addition.

DOI： 10.1063/1.4941219

Web of Science

Role of bromine doping on the photovoltaic properties and microstructures of CH3NH3PbI3 perovskite solar cells Reviewed

Atsushi Suzuki, Hiroshi Okada, Takeo Oku

IRAGO CONFERENCE 2015: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY 1709 020022-1 - 020022-8 2016

Language：English Publishing type：Research paper (international conference proceedings) Publisher：AMER INST PHYSICS

Organic-inorganic hybrid heterojunction solar cells containing CH3NH3PbI3 perovskite compound were fabricated using mesoporous TiO2 as the electronic transporting layer and spirobifluorence as the hole-transporting layer. The purpose of the present study is to investigate role of bromine (Br) doping on the photovoltaic properties and microstructure of CH3NH3PbI3 perovskite solar cells. Photovoltaic, optical properties and microstructures of perovskite-based solar cells were investigated. The X-ray diffraction identified crystal structure of the perovskite layer doped with Br in the solar cell. Scanning electron microscopy observation showed a different behavior of surface morphology and the perovskite crystal structure on the TiO2 mesoporous structure depending on extent amount of hydrogen doping of Br. The role of bromide halogen doping on the perovskite crystal structure and photovoltaic properties was due to improvement of carrier mobility, optimization of electron structure, band gap related with the photovoltaic parameters of V-oc, J(sc) and eta. Energy diagram and photovoltaic mechanism of the perovskite solar cells varied with halogen doping was discussed by experimental results.

DOI： 10.1063/1.4941221

Web of Science

Low Temperature Fabrication of Perovskite Solar Cells with TiO2 Nanoparticle Layers Reviewed

Masato Kanayama, Takeo Oku, Atsushi Suzuki, Masahiro Yamada, Hiroki Sakamoto, Satoshi Minami, Kazufumi Kohno

IRAGO CONFERENCE 2015: 360 DEGREE OUTLOOK ON CRITICAL SCIENTIFIC AND TECHNOLOGICAL CHALLENGES FOR A SUSTAINABLE SOCIETY 1709 020019-1 - 020019-7 2016

Language：English Publishing type：Research paper (international conference proceedings) Publisher：AMER INST PHYSICS

TiO2/CH3NH3PbI3-based photovoltaic devices were fabricated by a spin-coating method using a mixture solution. TiO2 require high-temperature processing to achieve suitably high carrier mobility. TiO2 electron transport layers and TiO2 scaffold layers for the perovskite were fabricated from TiO2 nanoparticles with different grain sizes. The photovoltaic properties and microstructures of solar cells were characterized. Nanoparticle sizes of these TiO2 were 23 nm and 3 nm and the performance of solar cells was improved by combination of two TiO2 nanoparticles

DOI： 10.1063/1.4941218

Web of Science

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