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首页> 外文期刊>Advanced Functional Materials >Efficient Perovskite Hybrid Photovoltaics via Alcohol-Vapor Annealing Treatment
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Efficient Perovskite Hybrid Photovoltaics via Alcohol-Vapor Annealing Treatment

机译：通过酒精-蒸气退火处理的高效钙钛矿混合光伏

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摘要

In this work, alcohol-vapor solvent annealing treatment on CH3NH3PbI3 thin films is reported, aiming to improve the crystal growth and increase the grain size of the CH3NH3PbI3 crystal, thus boosting the performance of perovskite photovoltaics. By selectively controlling the CH3NH3I precursor, larger-grain size, higher crystallinity, and pinhole-free CH3NH3PbI3 thin films are realized, which result in enhanced charge carrier diffusion length, decreased charge carrier recombination, and suppressed dark currents. As a result, over 43% enhanced efficiency along with high reproducibility and eliminated photocurrent hysteresis behavior are observed from perovskite hybrid solar cells (pero-HSCs) where the CH3NH3PbI3 thin films are treated by methanol vapor as compared with that of pristine pero-HSCs where the CH3NH3PbI3 thin films are without any alcohol vapor treatment. In addition, the dramatically restrained dark currents and raised photocurrents give rise to over ten times enhanced detectivities for perovskite hybrid photodetectors, reaching over 10(13) cm Hz(1/2) W-1 (Jones) from 375 to 800 nm. These results demonstrate that the method provides a simple and facile way to boost the device performance of perovskite photovoltaics.
机译：在这项工作中，报道了在CH3NH3PbI3薄膜上进行醇-蒸气溶剂退火处理，旨在改善晶体生长并增加CH3NH3PbI3晶体的晶粒尺寸，从而提高钙钛矿型光伏电池的性能。通过选择性地控制CH3NH3I前驱体，可以实现大晶粒尺寸，更高的结晶度和无针孔的CH3NH3PbI3薄膜，从而导致电荷载流子扩散长度增加，电荷载流子复合减少并抑制了暗电流。结果，钙钛矿型混合太阳能电池（pero-HSCs）的CH3NH3PbI3薄膜采用甲醇蒸汽处理，而原始的pero-HSCs的钙钛矿型混合太阳能电池（pero-HSCs）观察到效率提高了43％以上，并且再现性高，消除了光电流滞后行为。 CH3NH3PbI3薄膜未经任何酒精蒸汽处理。此外，对于钙钛矿混合光电探测器，受显着抑制的暗电流和升高的光电流使检出率提高了十倍以上，从375到800 nm超过10（13）cm Hz（1/2）W-1（Jones）。这些结果表明，该方法提供了一种简单而简便的方法来提高钙钛矿光伏器件的性能。

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  • 来源
    《Advanced Functional Materials》 |2016年第1期|101-110|共10页
  • 作者

    Liu Chang; Wang Kai; Yi Chao; Shi Xiaojun; Smith Adam W.; Gong Xiong; Heeger Alan J.;

  • 作者单位

    Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA;

    Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA;

    Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA;

    Univ Akron, Dept Chem, Akron, OH 44325 USA;

    Univ Akron, Dept Chem, Akron, OH 44325 USA;

    Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA;

    Univ Calif Santa Barbara, Ctr Polymers & Organ Solids, Santa Barbara, CA USA;

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