文章基本信息

标题：Photoelectrochemical CO₂ Conversion to Hydrocarbons Using an AlGaN/GaN-Si Tandem Photoelectrode
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作者：Masahiro Deguchi ; Satoshi Yotsuhashi ; Yuka Yamada 等
期刊名称：Advances in Condensed Matter Physics
印刷版ISSN：1687-8108
电子版ISSN：1687-8124
出版年度：2015
卷号：2015
DOI：10.1155/2015/537860
出版社：Hindawi Publishing Corporation
摘要：We report on a qualitatively improved photoelectrochemical CO2 reduction 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 CH4 and C2H4. The energy conversion efficiency to hydrocarbons from CO2 is estimated to be 0.046% under irradiation with concentrated solar light.