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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >A Facile and Green Approach to Synthesize Mesoporous Anatase TiO2 Nanomaterials for Efficient Dye-Sensitized and Hole-Conductor-Free Perovskite Solar Cells
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A Facile and Green Approach to Synthesize Mesoporous Anatase TiO2 Nanomaterials for Efficient Dye-Sensitized and Hole-Conductor-Free Perovskite Solar Cells

机译：一种用于合成介孔锐钛矿TiO2纳米材料的容易和绿色的方法，用于高效染料敏化和无孔 - 导体无钙钛矿太阳能电池

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摘要

Mesoporous anatase TiO2 nanomaterials (MATNs) with both large specific surface areas and structural coherence are highly desirable to achieve excellent physicochemical properties for photovoltaic applications, but the existing synthesis methods either need templates or cause pollution. Herein we report a simple, template-free, and green approach to synthesize MATNs consisting of interconnected nanoparticles. The Ti-complex intermediates were first prepared using titanium isopropoxide and acetic acid in a solvothermal reaction, which went through a morphology transformation sequence of nanowires, microspheres, and microflowers with a prolonged reaction time. Then the Ti-complex intermediates were cracked into MATNs under annealing, which were applied in dye-sensitized solar cells (DSSCs) and hole-conductor-free perovskite solar cells (HPSCs). The mesoporous anatase TiO2 nanowire-based DSSCs achieved a high power conversion efficiency (PCE) up to 7.78% because of both a high dye-adsorption capacity and long charge-transfer channels, while the PCE based on the P25 photoelectrodes is 6.61%. The further application of mesoporous anatase TiO2 nanowires in HPSCs achieved an improved PCE of 8.52%, compared to 6.78% for cells prepared using the P25 electrodes.
机译：具有大的比表面积和结构相干性的中孔锐钛矿TiO2纳米材料（MATNS）非常希望实现光伏应用的优异的物理化学性质，但现有的合成方法需要模板或引起污染。在此，我们报告了一种简单，无模板和绿色方法来合成由互连的纳米颗粒组成的MATNS。首先在溶剂热反应中使用钛等丙氧化钛和乙酸制备Ti复合体中间体，其经过纳米线，微球和微射线的形态转化序列，具有延长的反应时间。然后在退火下将Ti复合体中的中间体裂成垫片，其在染料敏化太阳能电池（DSSCs）和空穴 - 导体无钙钛矿太阳能电池（HPSC）中。介孔锐钛矿基纳米线的DSSCS由于高染料吸附容量和长电荷转移通道而达到高达7.78％的高功率转换效率（PCE），而基于P25光电极的PCE为6.61％。在HPSC中进一步施加介孔锐钛矿TiO2纳米线的纳米型达到了8.52％的改善，而使用P25电极制备的细胞为6.78％。

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  • 作者

    Chu Liang; Zhang Jie; Liu Wei; Zhang Rui; Yang Jian; Hu Ruiyuan; Li Xingao; Huang Wei;

  • 作者单位

    NUPT New Energy Technol Engn Lab Jiangsu Provence 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT Sch Mat Sci &

    Engn Key Lab Organ Elect &

    Informat Displays 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT Sch Mat Sci &

    Engn Key Lab Organ Elect &

    Informat Displays 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT Sch Mat Sci &

    Engn Key Lab Organ Elect &

    Informat Displays 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT Sch Mat Sci &

    Engn Key Lab Organ Elect &

    Informat Displays 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT Sch Mat Sci &

    Engn Key Lab Organ Elect &

    Informat Displays 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT New Energy Technol Engn Lab Jiangsu Provence 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

    NUPT Sch Mat Sci &

    Engn Key Lab Organ Elect &

    Informat Displays 9 Weiyuan Rd Nanjing 210046 Jiangsu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Mesoporous anatase TiO2 nanomaterials; Dye-sensitized solar cells; Perovskite solar cells; Specific surface area; Charge transfer;

    机译：中孔锐钛矿TiO2纳米材料;染料敏化太阳能电池;钙钛矿太阳能电池;比表面积;电荷转移;

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