Enhanced capability of photoelectrochemical CO2 conversion system using an AlGaN/GaN photoelectrode

Masahiro Deguchi, Satoshi Yotsuhashi, Hiroshi Hashiba, Yuka Yamada, Kazuhiro Ohkawa

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


We report significantly improved photosynthesis system based on AlGaN/GaN photochemical process. The resultant energy conversion efficiency is 0.13% which is the same level as that of real plants. The capability of this system is enhanced by high cathode potential due to the reduction of energy loss while utilizing the piezoelectric effect in the AlGaN/GaN heterostructure. The Faradaic efficiency of the CO2 conversion to organic materials is enhanced, accompanied by an increment in photocurrent by modification of the AlGaN/GaN photoelectrode structure and electrolytes. Furthermore, reaction products such as C2H4 and C2H5OH are generated by light illumination alone.

Original languageEnglish (US)
Article number08JF07
JournalJapanese Journal of Applied Physics
Issue number8 PART 2
StatePublished - Aug 1 2013

ASJC Scopus subject areas

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


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