期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1977
卷号：74
期号：10
页码：4116-4120
DOI：10.1073/pnas.74.10.4116
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：n-Type Si has been shown to serve as a stable photoanode in a cell for the conversion of light to electricity. The other components of the cell are a Pt cathode and an electrolyte consisting of an ethanol solution of [n-Bu4N]ClO4 with a redox couple of ferricenium/ferrocene. Data from a two-compartment cell show that ferrocene is oxidized to ferricenium with 100 {+/-} 2% current efficiency at the Si photoanode. Furthermore, prolonged irradiation of the Si in a one-compartment cell yields constant photocurrent and output characteristics. The maximum open-circuit photopotential is [~]700 mV, and the short-circuit quantum yield for electron flow at low light intensity exceeds 0.5. Conversion of monochromatic 632.8-nm light to electricity with [~]2% power efficiency at an output voltage of [~]200 mV has been sustained. These results represent a stable n-type Si-based photoelectrochemical cell.
关键词：optical energy conversion ; solar energy ; photoelectrochemistry ; Si photoelectrodes
