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Featured researches published by Takashi Kuchiyama.


Japanese Journal of Applied Physics | 2012

High Efficiency Silver-Free Heterojunction Silicon Solar Cell

Jose Luis Hernandez; Kunta Yoshikawa; Andrea Feltrin; Nicolas Menou; Nick Valckx; Elisabeth Van Assche; Dries Schroos; Kevin Vandersmissen; Harold Philipsen; Jef Poortmans; Daisuke Adachi; Masashi Yoshimi; Toshihiko Uto; Hisashi Uzu; Takashi Kuchiyama; Christophe Allebé; Naoaki Nakanishi; Toru Terashita; Takahisa Fujimoto; Gensuke Koizumi; Kenji Yamamoto

In this work, we present the results of the replacement of silver screen printing on heterojunction crystalline silicon (c-Si) solar cells with a copper metallization scheme that has the potential to reduce the manufacturing cost while improving their performance. We report for the first time silver-free heterojunction c-Si solar cells on 6-in. wafers. The conversion efficiency reached is a record 22.1% for c-Si technology for this wafer size (Voc = 729 mV, Jsc = 38.3 mA/cm2, FF= 79.1%). The total power generated is more than 5 W for 1-sun illumination, which is a world record. Heat-damp reliability tests show comparable performance for mini-modules fabricated with copper metalized as for conventional silver screen printed heterojunction c-Si solar cells.


Archive | 2008

Thin-film photoelectric conversion device

Tomomi Meguro; Mitsuru Ichikawa; Fumiyasu Sezaki; Kunta Yoshikawa; Takashi Kuchiyama; Kenji Yamamoto


Solar Energy Materials and Solar Cells | 2013

Advanced light trapping designs for high efficiency thin film silicon solar cells

Andrea Feltrin; Tomomi Meguro; Elisabeth Van Assche; Takashi Suezaki; Mitsuru Ichikawa; Takashi Kuchiyama; Daisuke Adachi; Osamu Inaki; Kunta Yoshikawa; Gensuke Koizumi; Hisashi Uzu; Hiroaki Ueda; Toshihiko Uto; Takahisa Fujimoto; Toru Irie; Hironori Hayakawa; Naoaki Nakanishi; Masashi Yoshimi; Kenji Yamamoto


world conference on photovoltaic energy conversion | 2013

High Efficiency Copper Electroplated Heterojunction Solar Cells and Modules – The Path towards 25% Cell Efficiency

Kenji Yamamoto; Masashi Yoshimi; Naoaki Nakanishi; M. Hiraishi; Takashi Kuchiyama; Kunta Yoshikawa; Toru Terashita; Hisashi Uzu; K. Nakano; R. Mishima; H. Kawasaki; M. Kanematsu; M. Hino; Toshihiko Uto; Nicolas Menou; Nick Valckx; D. Schroos; Daisuke Adachi; Jose Luis Hernandez


Archive | 2013

SUBSTRATE WITH TRANSPARENT ELECTRODE AND METHOD FOR MANUFACTURING SAME

Takashi Kuchiyama; Hironori Hayakawa; Hiroaki Ueda; Takahisa Fujimoto; Kenji Yamamoto


Archive | 2008

TRANSPARENT ELECTROCONDUCTIVE FILM AND PROCESS FOR PRODUCING THE SAME

Takashi Kuchiyama; Kenji Yamamoto


world conference on photovoltaic energy conversion | 2012

High Efficiency Copper Electroplated Heterojunction Solar Cells

Kenji Yamamoto; Naoaki Nakanishi; M. Hiraishi; Toru Terashita; C. Allebé; Gensuke Koizumi; Takashi Kuchiyama; R. Mishima; K. Nakano; M. Kanematsu; H. Kawasaki; M. Hino; Hisashi Uzu; Toshihiko Uto; Masashi Yoshimi; Jef Poortmans; Nicolas Menou; Nick Valckx; Andrea Feltrin; E. Van Assche; D. Schroos; Kunta Yoshikawa; Daisuke Adachi; Jose Luis Hernandez


Archive | 2008

Transparent electroconductive film and process for producing the transparent electroconductive film

Takashi Kuchiyama; Kenji Yamamoto; Mitsuru Ichikawa; Kozo Kondo


Archive | 2015

SUBSTRATE WITH TRANSPARENT ELECTRODE AND METHOD FOR PRODUCING SAME

Takashi Kuchiyama; 崇 口山; Hironori Hayakawa; 弘毅 早川; Hiroaki Ueda; 拓明 上田; Takahisa Fujimoto; 貴久 藤本; Kenji Yamamoto; 山本 憲治


Archive | 2005

Elastic Roller For Electrophotography

Takashi Kuchiyama; Jun Kamite; Nagahiro Masuda; Keizo Asaoka

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