首页> 美国卫生研究院文献>Proceedings of the National Academy of Sciences of the United States of America >n-Type Si-based photoelectrochemical cell: New liquid junction photocell using a nonaqueous ferricenium/ferrocene electrolyte
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n-Type Si-based photoelectrochemical cell: New liquid junction photocell using a nonaqueous ferricenium/ferrocene electrolyte

机译:n型硅基光电化学电池:使用非水二茂铁/二茂铁电解质的新型液结光电池

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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.
机译:n型Si已被证明可以在电池中用作将光转换为电的稳定光电阳极。电池的其他组件是Pt阴极和电解质,电解质由[n-Bu4N] ClO4的乙醇溶液与三氧化二铁/二茂铁组成。来自两室电池的数据表明,在Si光电阳极上,二茂铁以100±2%的电流效率被氧化为三价铁。此外,在单室电池中长时间照射Si会产生恒定的光电流和输出特性。最大开路光电势为〜700 mV,在低光强度下电子流的短路量子产率超过0.5。在输出电压为〜200 mV的情况下,已将功率约2%的632.8 nm单色光转换为电能。这些结果代表了稳定的基于n型Si的光电化学电池。

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