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首页> 外文期刊>Advanced energy materials >Solvent-Mediated Dimension Tuning of Semiconducting Oxide Nanostructures as Efficient Charge Extraction Thin Films for Perovskite Solar Cells with Efficiency Exceeding 16%
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Solvent-Mediated Dimension Tuning of Semiconducting Oxide Nanostructures as Efficient Charge Extraction Thin Films for Perovskite Solar Cells with Efficiency Exceeding 16%

机译：半导体氧化物纳米结构的溶剂介导的尺寸调节作为钙钛矿太阳能电池的有效电荷提取薄膜，其效率超过16％

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摘要

The recent surge in efficiency and progress of organohalide perovskite solar cells (PSCs) has been significant. The PSC performance is significantly influenced by nanostructuring as this varies the intrinsic optical, electrical, and electrochemical properties. Diverse TiO2 electron transport layers (ETLs) are solvothermally grown on the transparent conducting oxide substrate with different dimensionalities, 0D nanoparticles (TNP), 1D nanowires (TNW) to 2D nanosheets (TNS), by varying the organic solvent used. These layers feature enhanced optical transparency (approximate to 2%-5% transmittance improvement compared to pristine fluorine doped tin oxide, FTO, glass) minimizing light absorption losses. PSCs constructed using 1D TNW or 2D TNS yield enhanced photovoltaic performance compared to the 0D TNP counterparts. This is a result of i) improved infiltration of the perovskite in the porous TNW or TNS network and ii) facilitated electron transport and charge extraction at the TNW/perovskite or TNS/perovskite interfaces, thus reduced interfacial recombination loss. Employing a bilayered ETL film consisting of a self-assembled TiO2 blocking layer and a subsequent TNW active layer, produces PSC devices with an efficiency exceeding 16%. This bilayered ETL film can simultaneously block the photogenerated holes and enhance electron extraction, therefore improving PSC performance.
机译：最近有机卤化物钙钛矿太阳能电池（PSCs）的效率和进展的兴起是显着的。 PSC性能因纳米结构而显着影响，因为这变化了内在光学，电气和电化学性质。通过改变所用的有机溶剂，各种TiO2电子传输层（EtL）在具有不同尺寸的氧化物衬底上溶于具有不同尺寸，0d纳米颗粒（TNP），1D纳米线（TNW）至2D纳米片（TNS）的透明导电氧化物基板。这些层具有增强的光学透明度（与原始氟掺杂的锡，FTO，玻璃相比，近似为2％-5％透射率改善，最小化光吸收损失。与0D TNP对应物相比，使用1D TNW或2D TNS构造的PSC屈服增强的光伏性能。这是i）改善多孔TNW或TNS网络中PeroVskite的渗透，II）促进的电子传输和TNS / Perovskite界面的电荷提取，从而降低了界面重组损失。采用由自组装的TiO 2阻断层和随后的TNW有源层组成的双层ETL膜，产生PSC器件，其效率超过16％。该双层ETL膜可以同时阻断光生孔并增强电子提取，从而提高PSC性能。

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  • 来源
    《Advanced energy materials》 |2016年第7期|1502027.1-1502027.11|共11页
  • 作者

    Wu Wu-Qiang; Huang Fuzhi; Chen Dehong; Cheng Yi-Bing; Caruso Rachel A.;

  • 作者单位

    Univ Melbourne Sch Chem Particulate Fluids Proc Ctr Melbourne Vic 3010 Australia;

    Wuhan Univ Technol State Key Lab Adv Technol Mat Synth & Proc Wuhan 430070 Peoples R China;

    Univ Melbourne Sch Chem Particulate Fluids Proc Ctr Melbourne Vic 3010 Australia;

    Monash Univ Dept Mat Sci & Engn Clayton Vic 3800 Australia;

    Univ Melbourne Sch Chem Particulate Fluids Proc Ctr Melbourne Vic 3010 Australia|CSIRO Mfg Private Bag 10 Clayton Vic 3169 Australia;

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