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Dive into the research topics where Takeshi Gotanda is active.

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Featured researches published by Takeshi Gotanda.


Japanese Journal of Applied Physics | 2015

Investigation of the organic solar cell characteristics for indoor LED light applications

Shigehiko Mori; Takeshi Gotanda; Yoshihiko Nakano; Mitsunaga Saito; Kenji Todori; Masahiro Hosoya

We report an experimental study on the current–voltage characteristics of organic solar cells (OSCs) under indoor light illumination. A daylight color light-emitting diode (LED) was used as the indoor light source. We investigated the short circuit current density, open circuit voltage, and fill factor of the OSC under LED irradiation and compared them with those for a crystal silicon solar cell (c-Si-SC), which occupy a large part of the solar cell market. We found that compared with the c-Si-SC, the OSC had higher power conversion efficiency (PCE). We also derived the maximum feasible PCE of an OSC for indoor applications and calculated that a PCE value of 21.3% could be obtained under daylight color LED illumination at approximately 200 lx. From the results of the calculation, it became apparent that the open circuit voltage plays an important role in achieving a high PCE from OSCs, indicating they are promising as electrical energy harvesting module for indoor applications.


Archive | 1998

Method and apparatus for pyrolytically decomposing waste plastic

Masahiro Tadauchi; Yukishige Maezawa; Terunobu Hayata; Hideki Shimada; Isao Ito; Kazuo Suzuki; Fuminobu Tezuka; Jiro Kano; Takeshi Gotanda; Masao Koyama; Satoshi Kanazawa


Archive | 2000

Soldering method and soldering apparatus

Masahiro Tadauchi; Makoto Gonda; Yoshiyuki Goto; Tomiaki Furuya; Kouichi Teshima; Izuru Komatsu; Takeshi Gotanda


Archive | 1997

Disposal method for waste

Yuko Baba; Tomiaki Furuya; Takeshi Gotanda; Kazunari Harada; Masaru Hayashi; Satoshi Kanazawa; Hideo Kitamura; Izuru Komatsu; Masataka Konuma; Masaaki Morita; Naohiko Oyasato; Kunihiko Sasaki; Kimihiro Tadauchi; Yoshiki Tomioka; Motoo Yabuki; 武志 五反田; 佐々木 邦彦; 英夫 北村; 一成 原田; 富明 古屋; 由喜 富岡; 出 小松; 雅敬 小沼; 仁弘 忠内; 正明 森田; 元央 矢吹; 直彦 親里; 悟史 金澤; 優子 馬場


Archive | 1997

Valuable material separating method from lithium ion secondary battery

Tomiaki Furuya; Takeshi Gotanda; Masaru Hayashi; Hideo Kitamura; Izuru Komatsu; Masataka Konuma; Masaaki Morita; Naohiko Oyasato; Kimihiro Tadauchi; Yoshiki Tomioka; Motoo Yabuki; 武志 五反田; 英夫 北村; 富明 古屋; 由喜 富岡; 出 小松; 雅敬 小沼; 仁弘 忠内; 正明 森田; 元央 矢吹; 直彦 親里


Chemistry Letters | 2007

Molecular Structures of the Coloring Species of a Leuco Dye with Phenolic Color Developers

Yumiko Sekiguchi; Satoshi Takayama; Takeshi Gotanda; Kenji Sano


MRS Proceedings | 2015

Organic photovoltaic module development with inverted device structure

Shigehiko Mori; Haruhi Oh-oka; Hideyuki Nakao; Takeshi Gotanda; Yoshihiko Nakano; Hyangmi Jung; Atsuko Iida; Rumiko Hayase; Naomi Shida; Mitsunaga Saito; Kenji Todori; Taro Asakura; Akihiro Matsui; Masahiro Hosoya


Archive | 2005

Image decolorizing apparatus

Satoshi Takayama; Kenji Sano; Takeshi Gotanda


Archive | 1997

Method and device for treating mixed waste

Yuko Baba; Tomiaki Furuya; Takeshi Gotanda; Kazunari Harada; Satoshi Kanazawa; Hideo Kitamura; Izuru Komatsu; Naohiko Oyasato; Kunihiko Sasaki; Kimihiro Tadauchi; Koichi Tejima; 武志 五反田; 佐々木 邦彦; 英夫 北村; 一成 原田; 富明 古屋; 出 小松; 仁弘 忠内; 光一 手島; 直彦 親里; 悟史 金澤; 優子 馬場


Archive | 2012

Erasable liquid ink

Yumiko Sekiguchi; Kenji Sano; Satoshi Takayama; Takeshi Gotanda

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