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ISHIKAWA Ryo

Faculty: Graduate School of Science and Engineering TEL:
Position: Assistant Professor ■FAX:
Address: 255 Shimo-Okubo, Sakura-ku, Saitama City, Saitama 338-8570, JAPAN ■Mail Address:
■Web site:

Profile

Assigned Class

Faculty of Engineering

Academic Societies

Academic Societies
The Japan Society of Applied Physics

Academic Background

Degree
Doctor of Science , Saitama University

Research

Books, Articles, etc.

Articles
Improved efficiency of methylammonium-free perovskite thin film solar cells by fluorinated ammonium iodide treatment
,Organic Electronics,78:105596 2020
Ryo Ishikawa, Keiji Ueno, Hajime Shirai

Self-assembled Fluorinated Polymer Passivation Layer for Efficient Perovskite Thin-film Solar Cells
,Chemistry Letters,49(1):87-90 2020
Yuma Moriya, Ryo Ishikawa, Shuhei Akiyama, Keiji Ueno, Hajime Shirai

Role of the solvent in large crystal grain growth of inorganic-organic halide FA0.8Cs0.2PbIxBr3 − x perovskite thin films monitored by ellipsometry
,Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena,37(6):062401 2019
Koki Kawamura, Ryo Ishikawa, Yoko Wasai, Nataliya Nabatova-Gabain, Shun-ji Kurosu, Tomofumi Ukai, Masahide Tokuda, Yasuhiko Fujii, Tatsuo Hanajiri, Keiji Ueno, Hajime Shirai

Highly crystalline large-grained perovskite films using two additives without an antisolvent for high-efficiency solar cells
,Thin Solid Films,679:27-34 2019
Ryo Ishikawa, Keiji Ueno, Hajime Shirai

Barium hydroxide hole blocking layer for front- and back-organic/crystalline Si heterojunction solar cells
,Journal of Applied Physics,122:055101 2017
Jaker Hossain, Koji Kasahara, Daisuke Harada, A. T. M. Saiful Islam, Ryo Ishikawa, Keiji Ueno, Tatsuro Hanajiri, Yoshikata Nakajima, Yasuhiko Fujii, Masahide Tokuda, and Hajime Shirai

Fabrication of {CH(NH2)2}1−xCsxPbI3 Perovskite Thin Films by Two-step Method and Its Application to Thin Film Solar Cells
, Chemistry Letters,46(4):612-615 2017
Ryo Ishikawa ,Keiji Ueno and Hajime Shirai

sciencedirect.com の [HTML] Crystalline-Si heterojunction with organic thin-layer (HOT) solar cell module using poly (3, 4-ethylenedioxythiophene): poly (styrene sulfonate)(PEDOT: PSS)
,Solar Energy Materials and Solar Cells 2017
Koji Kasahara, Jaker Hossain, Daisuke Harada, Koki Ichikawa, Ryo Ishikawa, Hajime Shirai

Fabrication of {CH(NH2)2}1-xCsxPbI3 perovskite thin films by two-step method and its application to thin film solar cells
,Chemistry Letters ,46(4):612-615 2016
Ryo Ishikawa, Keiji Ueno,and Hajime Shirai

Nafion-Modified PEDOT:PSS as a Transparent Hole-Transporting Layer for High-Performance Crystalline-Si/Organic Heterojunction Solar Cells with Improved Light Soaking Stability
,ACS Applied Materials & Interfaces ,8(46):31926–31934 2016
Jaker Hossain, Qiming Liu, Takuya Miura, Koji Kasahara, Daisuke Harada, Ryo Ishikawa, Keiji Ueno, and Hajime Shirai

Role of Isopropyl Alcohol Solvent in the Synthesis of Organic–Inorganic Halide CH(NH2)2PbIxBr3–x Perovskite Thin Films by a Two-Step Method
,J. Phys. Chem. C 120 (2016) 25371–25377,120(44):25371–25377 2016
Takanori Yamanaka, Kenta Masumori, Ryo Ishikawa, Keiji Ueno, and Hajime Shirai

Effect of substrate bias on mist deposition of conjugated polymer on textured crystalline-Si for efficient c-Si/organic heterojunction solar cells
,physica status solidi (a),213(7):1922–1925 2016
Tatsuya Ohki, Koki Ichikawa, Jaker Hossain, Yasuhiko Fujii, Tatsuro Hanajiri, Ryo Ishikawa, Keiji Ueno, Hajime Shirai

Highly Efficient Solution-Processed Poly(3,4-ethylenedio-xythiophene):Poly(styrenesulfonate)/Crystalline?Silicon Heterojunction Solar Cells with Improved Light-Induced Stability
,Advanced Energy Materials,5:DOI: 10.1002/aenm.201500744 2015
Qiming Liu, Ryo Ishikawa, Shuji Funada, Tatsuya Ohki, Keiji Ueno, Hajime Shirai

Double resonance Raman modes in monolayer and few-layer MoTe2
,PHYSICAL REVIEW B,91:205415 2015
Huaihong Guo, Teng Yang, Mahito Yamamoto, Lin Zhou, Ryo Ishikawa, Keiji Ueno, Kazuhito Tsukagoshi, Zhidong Zhang, Mildred S. Dresselhaus, and Riichiro Saito

Efficient organic/polycrystalline silicon hybrid solar cells
,Nano Energy,11:260-266 2015
Qiming Liu, Tatsuya Ohki, Dequan Liu, Hiromitsu Sugawara, Ryo Ishikawa, Keiji Ueno, Hajime Shirai

Real-time measurement of optical anisotropy during film growth using a chemical mist deposition of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
,Journal of Applied Physics,115:123514 2014
Taiga Hiate, Naoto Miyauchi, Qiming Liu, Ryo Ishikawa, Keiji Ueno and Hajime Shirai

Self-assembled silver nanowires as top electrode for poly(3,4-ethylenedioxythiophene):poly(stylenesulfonate)/n-silicon solar cell
,Thin Solid Films,558:306-310 2014
Ishwor Khatri, Ayo Hoshino, Fumiya Watanabe, Qiming Liu, Ryo Ishikawa, Keiji Ueno, Hajime Shirai

Self assembled silver nanowire mesh as top electrode for organic–inorganic hybrid solar cell
,Canadian Journal of Physics,925(7/8):867-870 2014
Ishwor Khatri, Qiming Liu, Ryo Ishikawa, Keiji Ueno, Hajime Shirai

Improved photovoltaic performance of crystalline-Si/organic Schottky junction solar cells using ferroelectric polymers
,Applied Physics Letters,106:163503 2013
Q. Liu, . Khatri, R. Ishikawa, A. Fujimori, K. Ueno, K. Manabe, H. Nishino, and H. Shirai Citation:

Effects of molybdenum oxide molecular doping on the chemical structure of poly(3,4-ethylenedioxythiophene):poly(stylenesulfonate) and on carrier collection efficiency of silicon/poly(3,4-ethylenedioxythiophene):poly(stylenesulfonate) heterojunction solar
,Applied Physics Letters,102:183503 2013
Liu, Qiming Khatri, Ishwor Ishikawa, Ryo Ueno, Keiji Shirai, Hajime

Increased Organic Photovoltaic Cell Efficiency by Incorporating a Nonionic Fluorinated Surfactant Cathode Interlayer
,Applied Physics Express,5(12):121601 2012
Ryo Ishikawa, Hajime Shirai, and Keiji Ueno

Presentation
Nafion-Modified PEDOT:PSS/c-Si Solar Cells
第77回応用物理学会秋季学術講演会:15p-P13-2 201609
Qiming Liu、Jaker Hossain、Takuya Miura、Daisuke Harada、Ryo Ishikawa、Keiji Ueno、Hajime Shirai