ITOH Takashi

J-GLOBAL         Last updated: Dec 12, 2018 at 03:49
ITOH Takashi
Gifu University
Faculty of Engineering
(BLANK)(Gifu University), (BLANK)(Osaka University)

Research Areas


Academic & Professional Experience

Gifu University Faculty of Engineering, Department of Electrical and Electronic Engineering

Published Papers

Optical absorption spectra of Cu2ZnSn(S,Se)4 thin-film solar cells by Fourier transform photocurrent spectroscopy
Syazwana A.R.N. (Gifu Univ.), Tanabe K. (Gifu Univ.), Yamada S. (Gifu Univ.), Itoh T. (Gifu Univ.),Nonomura S. (Gifu Univ.), Sugimoto K. (Tokyo Tech.), Yamada A. (Tokyo Tech.)
Jpn. J. Appl. Phys.   57 08RC16-1-08RC16-5   2018   [Refereed]
Shigeki Takeuchi, Shigeki Takeuchi, Hideki Hirose, Shoji Nitta, Takashi Itoh, Shuichi Nonomura
Solar Energy Materials and Solar Cells   34 439-447   Mar 2016   [Refereed]
Anomalous reflection peaks and dips have been observed in optical reflectance spectra of random amorphous multilayers made of a-Si:H/a-Si3N4+xg :H. A model using the idea of localization of light propagation has been used to explain these anomalie...
Itoh T. (Gifu Univ.), Sakai T. (Gifu Univ.), Ito T. (Gifu Univ.), Kuriyama H. (Gifu Univ.), Nonomura S. (Gifu Univ.)
Jpn. J. Appl. Phys.   55 01AH10-1-01AH10-5   Jan 2016   [Refereed]
© 2016 The Japan Society of Applied Physics. The local surface potential on hydrogenated microcrystalline silicon films was investigated using a Kelvin force microscope. In the surface morphology image of the films deposited on Asahi U-type substr...
Itoh T. (Gifu Univ.), Ito T. (Gifu Univ.), Kuriyama H. (Gifu Univ.), Nonomura S. (Gifu Univ.)
Jpn. J. Appl. Phys.   55 04ES13-1-04ES13-6   2016   [Refereed]
Takashi Itoh, Ryuichi Katayama, Koki Yamakawa, Kento Matsui, Masaru Saito, Shuhichiroh Sugiyama, Porponth Sichanugrist, Shuichi Nonomura, Makoto Konagai, Makoto Konagai
Japanese Journal of Applied Physics   54 08KB11-1-08KB11-5   2015   [Refereed]
© 2015 The Japan Society of Applied Physics. The electrical characterization of hydrogenated amorphous silicon oxide (a-SiOx:H) films was performed by electron spin resonance (ESR) and electrical conductivity measurements. In the ESR spectra of th...


Shoji Nitta, Hideki Hirose, Shigeki Takeuchi, Takashi Itoh, Shuichi Nonomura
Optoelectronics Tokyo   9 355-366   Mar 2016   [Refereed]
The optical properties of periodic amorphous semiconductor multilayers, i.e. amorphous superlattices, can be explained by the effective medium treatment. Once randomness is introduced to amorphous semiconductor multilayers, two effects of randomne...
K. Shimakawa, K. Shimakawa, T. Itoh, H. Naito, S. O. Kasap
Physica Status Solidi (C) Current Topics in Solid State Physics   9 2602-2605   2012   [Refereed]
It is shown that a series sequence of transport involving grains and grain boundaries produces non-Drude THz conductivity in nanomaterials. The present model represents a different point of view than the well accepted Drude-Smith model. In this pa...
T. Itoh, T. Itoh, K. Matsuyama, K. Shimakawa, J. Orava, T. Wagner, M. Frumar
Physica Status Solidi (C) Current Topics in Solid State Physics   6    May 2011
To know the optical constants, n and k, in transparent conductive zinc oxide (ZnO) films, both spectroscopic ellipsometry (SE) and reflectance-transmittance (RT) method have been adopted. The optical constants, n and k deduced from the SE are diff...
Takashi Itoh, Takashi Itoh
Physica Status Solidi (C) Current Topics in Solid State Physics   8 193-197   Jan 2011
Behaviors of photogenerated carriers in Si-related random composites, hydrogenated microcrystalline silicon (μc-Si:H) and hydrogenated amorphous silicon (a-Si:H) have been discussed. In μc-Si:H film, the γ -value changes from 0.82 to around 1 with...
N. Nakagawa, K. Shimakawa, T. Itoh, Y. Ikeda
Physica Status Solidi (C) Current Topics in Solid State Physics   7 857-860   2010   [Refereed]
To understand the direct relation among photodarkening (PD), photoinduced volume change (PVC), and photoinduced defect creation (PDC), we perform in-situ simultaneous measurements of all three phenomena, i.e. optical absorption coefficient (for PD...

Books etc

Oct 2008   

Research Grants & Projects

Application to Solar Cell of a-SiCx : H films including μc-Si phase