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首页> 外文期刊>Journal of the American Chemical Society >Rational Defect Passivation of Cu_2ZnSn(S/Se)_4 Photovoltaics with Solution-Processed Cu_2ZnSnS_4:Na Nanocrystals
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Rational Defect Passivation of Cu_2ZnSn(S/Se)_4 Photovoltaics with Solution-Processed Cu_2ZnSnS_4:Na Nanocrystals

机译：固溶处理的Cu_2ZnSnS_4：Na纳米晶对Cu_2ZnSn（S / Se）_4光伏的合理缺陷钝化

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摘要

An effective defect passivation route has been demonstrated in the rapidly growing Cu_2ZnSn(S,Se)_4 (CZTSSe) solar cell device system by using Cu_2ZnSnS_4:Na (CZTS:Na) nanocrystals precursors. CZTS:Na nanocrystals are obtained by sequentially preparing CZTS nanocrystals and surface decorating of Na species, while retaining the kesterite CZTS phase. The exclusive surface presence of amorphous Na species is proved by X-ray photoluminescence spectrum and transmission electron microscopy. With Na-free glasses as the substrate, CZTS:Na nanocrystal-based solar cell device shows 50% enhancement of device performance (~6%) than that of unpassivated CZTS nanocrystal-based device (~4%). The enhanced electrical performance is closely related to the increased carrier concentration and elongated minority carrier lifetime, induced by defect passivation. Solution incorporation of extrinsic additives into the nanocrystals and the corresponding film enables a facile, quantitative, and versatile approach to tune the defect property of materials for future optoelectronic applications.
机译：通过使用Cu_2ZnSnS_4：Na（CZTS：Na）纳米晶体前体，在快速增长的Cu_2ZnSn（S，Se）_4（CZTSSe）太阳能电池器件系统中已证明了有效的缺陷钝化途径。 CZTS：Na纳米晶体是通过依次制备CZTS纳米晶体和对Na物种进行表面修饰而获得的，同时保留了Kesterite CZTS相。 X射线光致发光光谱和透射电子显微镜证明了非晶态Na物种的唯一表面存在。以无钠玻璃为基材，CZTS：Na纳米晶体基太阳能电池器件的性能比未钝化的CZTS纳米晶体器件（〜4％）提高了50％（〜6％）。增强的电性能与由缺陷钝化引起的增加的载流子浓度和延长的少数载流子寿命密切相关。将非本征添加剂的溶液掺入纳米晶体和相应的薄膜中，可实现一种简便，定量和通用的方法来调整材料的缺陷特性，以用于未来的光电应用。

著录项

  • 来源
    《Journal of the American Chemical Society》 |2013年第43期|15998-16001|共4页
  • 作者

    Huanping Zhou; Tze-Bin Song; Wan-Ching Hsu; Song Luo; Shenglin Ye; Hsin-Sheng Duan; Chia-Jung Hsu; Wenbing Yang; Yang Yang;

  • 作者单位

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

    Department of Materials Science and Engineering University of California, Los Angeles,California 90095, United States,California NanoSystems Institute, University of California, Los Angeles,California 90095, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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  • 入库时间 2022-08-18 03:12:53

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