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Quasiepitaxy Strategy for Efficient Full-Inorganic Sb_2S_3 Solar Cells

机译：高效全无机Sb_2S_3太阳能电池的拟外延策略

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摘要

Antimony sulfide (Sb2S3) as a wide-bandgap, nontoxic, and stable photovoltaic material reveals great potential for the uppermost cells in Si-based tandem cell stacks. Sb2S3 solar cells with a compatible process, acceptable cost, and high efficiency therefore become the mandatory prerequisites to match silicon bottom cells. The performance of vacuum processed Sb2S3 device is pinned by bulk and interfacial recombination. Herein, a thermally treated TiO2 buffer layer induces quasiepitaxial growth of vertical orientation Sb2S3 absorber overcoming interface defects and absorber transport loss. Such novel growth could pronouncedly improve the open-circuit voltage (V-oc) due to the superior interface quality and intraribbon transport. The epitaxial rough Sb2S3 surface shows a texturized-like morphology. It is optimized by tuning the grain sizes to form strong light trapping effect, which further enhances the short-circuit current density (J(sc)) with a 16% improvement. The final optimal device with high stability obtains a power conversion efficiency of 5.4%, which is the best efficiency for full-inorganic Sb2S3 solar cells. The present developed quasiepitaxy strategy supports a superior interface, vertical orientation, and surface light trapping effect, which provides a new perspective for efficient noncubic material thin film solar cells.
机译：硫化锑（Sb2S3）作为一种能带隙，无毒且稳定的光伏材料，揭示了硅基串联电池堆中最上方电池的巨大潜力。因此，具有兼容工艺，可接受的成本和高效率的Sb2S3太阳能电池成为匹配硅底部电池的强制性前提。真空处理的Sb2S3器件的性能受本体和界面重组的影响。在此，热处理的TiO 2缓冲层引起垂直取向的Sb 2 S 3吸收体的准外延生长，克服了界面缺陷和吸收体传输损失。由于出众的界面质量和碳带内传输，这种新颖的增长可以显着改善开路电压（V-oc）。外延粗糙的Sb2S3表面显示出纹理状的形态。通过调整晶粒大小以形成强光捕获效果对其进行了优化，从而进一步提高了短路电流密度（J（sc）），提高了16％。最终的具有高稳定性的最佳器件可获得5.4％的功率转换效率，这是全无机Sb2S3太阳能电池的最佳效率。当前开发的准外延策略支持优异的界面，垂直取向和表面光捕获效果，这为有效的非立方材料薄膜太阳能电池提供了新的视角。

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  • 来源
    《Advanced Functional Materials》 |2019年第31期|1901720.1-1901720.10|共10页
  • 作者

    Deng Hui; Zeng Yiyu; Ishaq Muhammad; Yuan Shengjie; Zhang Huan; Yang Xiaokun; Hou Mingming; Farooq Umar; Huang Jialiang; Sun Kaiwen; Webster Richard; Wu Hao; Chen Zhenhua; Yi Fei; Song Haisheng; Hao Xiaojing; Tang Jiang;

  • 作者单位

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|Huazhong Univ Sci & Technol, Shenzhen R&D Ctr, Shenzhen 518000, Peoples R China;

    Univ New South Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|Huazhong Univ Sci & Technol, Shenzhen R&D Ctr, Shenzhen 518000, Peoples R China;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    HUST, SOEI, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    Univ New South Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

    Univ New South Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

    Univ New South Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

    HUST, SOEI, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai, Peoples R China;

    HUST, SOEI, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|Huazhong Univ Sci & Technol, Shenzhen R&D Ctr, Shenzhen 518000, Peoples R China;

    Univ New South Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW 2052, Australia;

    HUST, WNLO, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China|HUST, Sch Opt & Elect Informat, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    light trapping; preferred orientation; quasiepitaxy; recombination; Sb2S3 solar cell;

    机译：捕光;择优取向;准外延;重组;Sb2S3太阳能电池;

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