Photoelectrochemical CO2 conversion to hydrocarbons using an AlGaN/GaN-Si tandem photoelectrode

Masahiro Deguchi; Satoshi Yotsuhashi; Yuka Yamada; Kazuhiro Ohkawa

doi:10.1155/2015/537860

Photoelectrochemical CO₂ conversion to hydrocarbons using an AlGaN/GaN-Si tandem photoelectrode

Masahiro Deguchi^*, Satoshi Yotsuhashi, Yuka Yamada, Kazuhiro Ohkawa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report on a qualitatively improved photoelectrochemical COreduction system which makes it possible to convert CO₂ into hydrocarbons. The key is the tandem photoelectrode, which consists of AlGaN/GaN and Si device with p-n junction. The Si device is located on the back of AlGaN/GaN structure and acts as activation layer that raises cathode potential. Use of a Cu cathode results in change of the main reaction products from CO and HCOOH to hydrocarbons such as CHand C The energy conversion efficiency to hydrocarbons from COis estimated to be 0.046% under irradiation with concentrated solar light.

Original language	English (US)
Article number	537860
Journal	Advances in Condensed Matter Physics
Volume	2015
DOIs	https://doi.org/10.1155/2015/537860
State	Published - 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Masahiro Deguchi et al.

ASJC Scopus subject areas

Condensed Matter Physics

Access to Document

10.1155/2015/537860

Cite this

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abstract = "We report on a qualitatively improved photoelectrochemical COreduction system which makes it possible to convert CO2 into hydrocarbons. The key is the tandem photoelectrode, which consists of AlGaN/GaN and Si device with p-n junction. The Si device is located on the back of AlGaN/GaN structure and acts as activation layer that raises cathode potential. Use of a Cu cathode results in change of the main reaction products from CO and HCOOH to hydrocarbons such as CHand C The energy conversion efficiency to hydrocarbons from COis estimated to be 0.046% under irradiation with concentrated solar light.",

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AU - Ohkawa, Kazuhiro

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