Enhanced Capability of Photoelectrochemical CO 2 Conversion System Using an AlGaN/GaN Photoelectrode

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...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 52; no. 8S; p. 8
Main Authors Deguchi, Masahiro, Yotsuhashi, Satoshi, Hashiba, Hiroshi, Yamada, Yuka, Ohkawa, Kazuhiro
Format Journal Article
LanguageEnglish
Published 01.08.2013
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Summary: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 CO 2 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 C 2 H 4 and C 2 H 5 OH are generated by light illumination alone.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.52.08JF07