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首页> 外文期刊>Solar Energy >Ferroelectric barium titanate microspheres with superior light-scattering ability for the performance enhancements of flexible polymer dye sensitized solar cells and photodetectors
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Ferroelectric barium titanate microspheres with superior light-scattering ability for the performance enhancements of flexible polymer dye sensitized solar cells and photodetectors

机译：铁电钡钛酸钡微球，具有卓越的光散射能力，用于柔性聚合物染料敏化太阳能电池和光电探测器的性能增强

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摘要

In this study, barium titanate microspheres (BTMS) comprising 10 to 20 nm thick one-dimensional (1D) nanorods have been synthesized via a dual-stage hydrothermal process and used as photoelectrode material for the fabrications of high-performance flexible dye sensitized solar cells (FDSSCs) and photodetectors. Crystal structure and morphological analyses have indicated a rutile phase TiO2 microspheres (RTMS) intermediate is transformed as tetragonal BTMS during the hydrothermal process. Because of the superior light-scattering ability and reduced charge recombination at the BTMS/TiO2 nanoparticles film/electrolyte interface by the ferroelectric dipoles of BaTiO3, BTMS/TiO2 nanocomposite based FDSSC photoanode has demonstrated similar to 1.7-fold higher power conversion efficiency (PCE = 4.53%) than the pure anatase TiO2 nanoparticles based FDSSC photoanode (PCE = 2.66%). A high dielectric permittivity (epsilon(r) = 3114 at 25 degrees C) and tangent loss (epsilon) obtained for the BTMS at low AC frequencies have confirmed their superior dielectric and ferroelectric characteristics over RTMS (epsilon(r) = 888 at 25 degrees C), created by the strain induced ferroelectric polarization of 1D BaTiO3 nanorods. Similarly, the BTMS coated PET based flexible photodetector has produced quantum efficiency (QE) of 1.1% with an excellent photoresponse, which further indicated the ferroelectric polarization aided photocurrent generation in the BTMS based photoactive materials.
机译：在该研究中，通过双级水热法合成了包含10至20nm厚的一维（1D）纳米棒的钛酸钡微球（BTMS）并用作高性能柔性染料敏化太阳能电池的制造的光电电极材料（FDSSCS）和光电探测器。晶体结构和形态学分析表明了金红石相TiO 2微球（RTMS）中间体在水热过程中转化为四边形BTMS。由于BTMS / TiO2纳米粒子膜/电解质界面的优异的光散射能力和降低电荷重组通过BATIO3的铁电偶极子，基于BTMS / TiO2纳米复合材料的FDSSC光电仪已经表现出类似于1.7倍的功率转换效率（PCE = 4.53％）比纯锐钛矿TiO2纳米粒子的FDSSC光电阳极（PCE = 2.66％）。在低AC频率下为BTMS获得的高介电介电常数（25℃的ε（R）= 3114）和在低AC频率下获得的切换损失（ε）证实了其优异的介电和铁电特性在RTMS（ε（R）= 888处为25度c），由应变诱导的1D BATIO3纳米棒的铁电偏振产生。类似地，BTMS涂覆的PET基柔性光电探测器具有1.1％的量子效率（QE），具有优异的光响应，其进一步指示了基于BTMS的光活性材料中的铁电偏振辅助光电流产生。

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  • 来源
    《Solar Energy》 |2021年第8期|93-101|共9页
  • 作者

    Baiju K. Gireesh; Murali B.; Kumaresan Duraisamy;

  • 作者单位

    Amrita Vishwa Vidyapeetham Dept Chem Engn & Mat Sci Amrita Sch Engn Coimbatore 641112 Tamil Nadu India|Amrita Vishwa Vidyapeetham Amrita Sch Engn Ctr Excellence Adv Mat & Green Technol Coimbatore 641112 Tamil Nadu India;

    Amrita Vishwa Vidyapeetham Amrita Sch Engn Ctr Excellence Adv Mat & Green Technol Coimbatore 641112 Tamil Nadu India;

    Amrita Vishwa Vidyapeetham Dept Chem Engn & Mat Sci Amrita Sch Engn Coimbatore 641112 Tamil Nadu India|Amrita Vishwa Vidyapeetham Amrita Sch Engn Ctr Excellence Adv Mat & Green Technol Coimbatore 641112 Tamil Nadu India;

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

    Barium titanate microspheres; Nanocomposite; Dye sensitized solar cell; Photodetector; Ferroelectric polarization; Flexible electronics;

    机译：钛酸钡微球;纳米复合材料;染料敏化太阳能电池;光电探测器;铁电偏振;柔性电子;

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