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Plasmon nanoparticle effect to improve optical properties of perovskite thin film
Photonics and Nanostructures - Fundamentals and Applications ( IF 2.7 ) Pub Date : 2020-12-31 , DOI: 10.1016/j.photonics.2020.100888
YangXi Chen , ChaoLing Du , Lu Sun , TianYi Fu , RuXin Zhang , DaNing Shi

Noble metal material, size, period and position are key parameters to affect optical absorption property of perovskite thin film, which was numerically investigated in this paper by finite element method. It demonstrates that Al nanoparticles show larger enhancement ability of light absorption than that of Au and Ag under AM1.5 illumination with the same geometry parameter. The light absorption enhancement after introducing Al nanopheres is optimized by nanosphere size, period and position being placed either on top (case I), in perovskite layer (case II), or simultaneously on top and in perovskite layer (case III), which mechanism isdiscussed in terms of the corresponding electric field and power loss density distributions. The maximal light absorption enhancement is revealed to ∼1.41 fold that of without Al nanosphere case. The SiO2, Al2O3 and TiO2 dielectric-nanoshell encapsulating effects on incident light trapping ability and photocurrent of the above optimized case are discussed as well. The present work holds great promise for choosing appropriate plasmonic material, size, period and position to facilitate designing perovskite solar cells and photo detectors.



中文翻译:

等离子纳米粒子效应可改善钙钛矿薄膜的光学性能

贵金属材料,尺寸,周期和位置是影响钙钛矿薄膜光吸收性能的关键参数,本文通过有限元方法对其进行了数值研究。结果表明,在相同几何参数下,在AM1.5照射下,Al纳米颗粒的光吸收增强能力大于Au和Ag。通过将纳米球的尺寸,周期和位置放置在顶部(案例I),钙钛矿层(案例II)中或同时放置在钙钛矿层的顶部和案例(案例III)中,可以优化引入Al纳米粒子后的光吸收增强能力。就相应的电场和功率损耗密度分布进行讨论。揭示最大的光吸收增强为不具有Al纳米球的情况下的〜1.41倍。二氧化硅参照图2,还讨论了上述优化情况下的Al 2 O 3和TiO 2介电纳米壳封装对入射光捕获能力和光电流的影响。当前的工作对选择合适的等离子体材料,尺寸,周期和位置具有很大的希望,以方便钙钛矿太阳能电池和光电探测器的设计。

更新日期:2021-01-06
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