Yoshihiro Hamakawa

Overview

Best Publications

• Theoretical analysis of the effect of conduction band offset of window/CIS layers on performance of CIS solar cells using device simulation

  Takashi Minemoto;Takuya Matsui;Hideyuki Takakura;Yoshihiro Hamakawa

  736
  Citations

• Properties and structure of a‐SiC:H for high‐efficiency a‐Si solar cell

  Y. Tawada;K. Tsuge;M. Kondo;H. Okamoto

  677
  Citations

• Preparation of Zn1−xMgxO films by radio frequency magnetron sputtering

  Takashi Minemoto;Takayuki Negami;Shiro Nishiwaki;Hideyuki Takakura

  479
  Citations

• Hydrogenated amorphous silicon carbide as a window material for high efficiency a-Si solar cells

  Yoshihisa Tawada;Masataka Kondo;Hiroaki Okamoto;Yoshihiro Hamakawa

  254
  Citations

• a‐SiC:H/a‐Si:H heterojunction solar cell having more than 7.1% conversion efficiency

  Unknown

  217
  Citations

• Cu(In,Ga)Se2 solar cells with controlled conduction band offset of window/Cu(In,Ga)Se2 layers

  Takashi Minemoto;Yasuhiro Hashimoto;Takuya Satoh;Takayuki Negami

  215
  Citations

• Flexible photovoltaic device

  Yoshihiro Hamakawa;Yoshihisa Tawada;Kazunori Tsuge;Masanobu Izumina

  214
  Citations

• Preparation and basic properties of PbTiO3 ferroelectric thin films and their device applications

  M. Okuyama;Y. Hamakawa

  209
  Citations

• Amorphous Si/Polycrystalline Si Stacked Solar Cell Having More Than 12% Conversion Efficiency

  Koji Okuda;Hiroaki Okamoto;Yoshihiro Hamakawa

  138
  Citations

• Optoelectronics and Photovoltaic Applications of Microcrystalline Sic

  Y. Hamakawa;Y. Matsumoto;G. Hirata;H. Okamoto

  137
  Citations

• Control of conduction band offset in wide-gap Cu(In,Ga)Se solar cells

  Takashi Minemoto;Yasuhiro Hashimoto;Wahid Shams-Kolahi;Takuya Satoh

  134
  Citations

• Epitaxial growth of ferroelectric PLZT thin film and their optical properties

  M. Okuyama;T. Usuki;Y. Hamakawa;T. Nakagawa

  129
  Citations

• Effect of spectral irradiance distribution on the outdoor performance of amorphous Si//thin-film crystalline Si stacked photovoltaic modules

  Takashi Minemoto;Masanori Toda;Shingo Nagae;Masahiro Gotoh

  126
  Citations

• Hydrogen Content in a-SiC:H Films Prepared by Plasma Decomposition of Silane and Methane or Ethylene

  Fuminori Fujimoto;Akio Ootuka;Ken-ichiro Komaki;Yasushi Iwata

  122
  Citations

• Low Temperature Growth of SiO2 Thin Film by Double-Excitation Photo-CVD

  Kohji Inoue;Masanori Michimori;Masanori Okuyama;Yoshihiro Hamakawa

  120
  Citations

• A new type of high efficiency with a low‐cost solar cell having the structure of a μc‐SiC/polycrystalline silicon heterojunction

  Y. Matsumoto;G. Hirata;H. Takakura;H. Okamoto

  117
  Citations

• Influence of growth temperature on crystalline structure in Ga0.5In0.5P grown by organometallic vapor phase epitaxy

  Masahiko Kondow;Hiroshi Kakibayashi;Shigekazu Minagawa;Youji Inoue

  115
  Citations

• Anomalous temperature dependence of the ordered Ga0.5In0.5P photoluminescence spectrum

  Masahiko Kondow;Shigekazu Minagawa;Youji Inoue;Taneo Nishino

  107
  Citations

• Variable minority carrier transport model for amorphous silicon solar cells

  H. Okamoto;H. Kida;S. Nonomura;Y. Hamakawa

  106
  Citations

• Chemical preparation of PLZT powder from aqueous solution

  Michihiro Murata;Kikuo Wakino;Katsuhiko Tanaka;Yoshihiro Hamakawa

  105
  Citations

• Device physics and design of a-Si ITO/p-i-n heteroface solar cells

  H. Okamoto;Y. Nitta;T. Yamaguchi;Y. Hamakawa

  102
  Citations

• Steady-state photoconductivity in amorphous semiconductors containing correlated defects

  H. Okamoto;H. Kida;Y. Hamakawa

  99
  Citations