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首页> 外文期刊>Advanced Functional Materials >Reducible-Shell-Derived Pure-Copper-Nanowire Network and Its Application to Transparent Conducting Electrodes
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Reducible-Shell-Derived Pure-Copper-Nanowire Network and Its Application to Transparent Conducting Electrodes

机译：可还原壳衍生的纯铜纳米线网络及其在透明导电电极中的应用

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摘要

The concept of using core Cu nanowires (CuNWs) that are conformally encapsulated by a reducible fugitive material for transparent conducting electrodes (TCEs) with high oxidation stability is presented. By the chemical reaction of an acid with surface oxide and hydroxide, a uniform surface shell layer is readily obtained on each CuNW upon adding lactic acid to the CuNW dispersion. The Cu lactate shell prevents the core CuNW from oxidizing during storage and film formation, enabling the core Cu nanowires to maintain their characteristic optoelectronic properties. Through simple thermal annealing under a nitrogen atmosphere, the Cu lactate shell is easily decomposed to expose the underlying pure Cu, providing an effective way to produce a pure-CuNW-network TCE with a sheet resistance of 19.8 Omega sq(-1) and an optical transmittance of 85.5% at 550 nm. The application of the CuNW-based TCE to the transparent top electrode in organometallic halide perovskite solar cells is further demonstrated for the first time, yielding a power-conversion efficiency 9.88% as compared to that of 13.39% for conventional perovskite solar cells with an indium-tin-oxide electrode. This study proposes the high feasibility of these CuNWs as a vacuum-free and noble-metal-free transparent- window electrode in perovskite solar cells.
机译：提出了使用由可还原的逃逸材料共形封装的铜芯纳米线（CuNW）用于具有高氧化稳定性的透明导电电极（TCE）的概念。通过酸与表面氧化物和氢氧化物的化学反应，在向CuNW分散体中添加乳酸后，可轻松在每个CuNW上获得均匀的表面壳层。乳酸铜壳可防止核心CuNW在存储和成膜过程中氧化，从而使核心Cu纳米线能够保持其特征性的光电性能。通过在氮气氛下进行简单的热退火，乳酸铜壳容易分解以暴露出下面的纯铜，从而提供了一种有效的方法来生产表面电阻为19.8 Omega sq（-1）的纯CuNW网络三氯乙烯。在550 nm处的光学透射率为85.5％。首次进一步证明了基于CuNW的TCE在有机金属卤化物钙钛矿太阳能电池中的透明顶部电极上的应用，其功率转换效率为9.88％，而传统的含铟钙钛矿太阳能电池的功率转换效率为13.39％。 -氧化锡电极。这项研究提出了将这些CuNWs用作钙钛矿太阳能电池中的无真空和无贵金属透明窗口电极的高度可行性。

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  • 来源
    《Advanced Functional Materials》 |2016年第36期|6545-6554|共10页
  • 作者

    Hwang Hyewon; Kim Areum; Zhong Zhaoyang; Kwon Hyeok-Chan; Jeong Sunho; Moon Jooho;

  • 作者单位

    Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 120749, South Korea;

    Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 120749, South Korea;

    Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 120749, South Korea;

    Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 120749, South Korea;

    Korea Res Inst Chem Technol, Adv Mat Div, 19 Sinseongno, Daejeon 305600, South Korea;

    Yonsei Univ, Dept Mat Sci & Engn, 50 Yonsei Ro, Seoul 120749, South Korea;

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