@misc{masatomo2024a,
  title = {Evaluation of defect density in bulk gallium nitrides by photothermal deflection spectroscopy and steady-state photocapacitance methods},
  author = {Masatomo Sumiya, Hajime Fujikura, Yoshitaka Nakano, Shuhei Yashiro, Yasuo Koide, Tohru Honda},
  publisher = {Elsevier BV},
  year = {2024-04-06},
  keywords = {GaN bulk, defect level, photothermal deflection spectroscopy}
}