@article{CTT100760745,
  author = {Keisuke Ide and * Kyohei Ishikawa and Haochun Tang and Takayoshi Katase and Hidenori Hiramatsu and Hideya Kumomi and Hideo Hosono and Toshio Kamiya},
  title = {Effects of Base Pressure on Growth and Optoelectronic Properties of Amorphous In‐Ga‐Zn‐O: Ultralow Optimum Oxygen Supply and Bandgap Widening},
  journal = {physica status solidi (a)},
  year = 2018,
}

@article{CTT100700427,
  author = {Haochun Tang and Kyohei Ishikawa and Keisuke Ide and Hidenori Hiramatsu and Shigenori Ueda and Naoki Ohashi and Hideya Kumomi and Hideo Hosono and Toshio Kamiya},
  title = {Effects of residual hydrogen in sputtering atmosphere on structures and properties of amorphous In-Ga-Zn-O thin films},
  journal = {J. Appl. Phys.},
  year = 2015,
}