Fabrication of nonpolar a-plane nitride-based solar cell on r-plane sapphire substrate

Tatsuro Nakao, Takahiro Fujii, Toru Sugiyama, Shota Yamamoto, Daisuke Iida, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama, Isamu Akasaki, Hiroshi Amano

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


We fabricated and characterized a nonpolar a-plane nitride-based solar cell on an r-plane sapphire substrate. The maximum external quantum efficiency of the solar cell reached 62% at a wavelength of approximately 400 nm. The open-circuit voltage, the short-circuit current density, and the fill factor of the solar cell were 0.9 V, 4.8 mA/cm2, and 57%, respectively. A conversion efficiency of 1.6% was obtained from the solar cell under a solar simulator of air mass 1.5G and an irradiation intensity of 155mW/cm2 at room temperature. © 2011 The Japan Society of Applied Physics.
Original languageEnglish (US)
Issue number10
StatePublished - Oct 1 2011
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Engineering(all)


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