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首页> 外文期刊>Applied Surface Science >Improving the efficiency and environmental stability of inverted planar perovskite solar cells via silver-doped nickel oxide hole-transporting layer
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Improving the efficiency and environmental stability of inverted planar perovskite solar cells via silver-doped nickel oxide hole-transporting layer

机译：通过掺杂银的氧化镍空穴传输层提高倒置平面钙钛矿太阳能电池的效率和环境稳定性

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摘要

In this paper, we demonstrate the high-performance inverted planar heterojunction perovskite solar cells (PeSCs) based on the novel inorganic hole-transporting layer (HTL) of silver (Ag)-doped NiOx (Ag: NiOx). Density-functional theory (DFT) calculation reveals that Ag prefers to occupy the substitutional Ni site (Ag-Ni) and behaves as an acceptor in NiO lattice. Compared with the pristine NiOx films, appropriate Ag doping can increase the optical transparency, work function, electrical conductivity and hole mobility of NiOx films. Moreover, the CH3NH3PbI3 perovskite films grown on Ag: NiOx exhibit better crystallinity, higher coverage and smoother surface with densely packed larger grains than those grown on the pristine NiOx film. Consequently, the Ag: NiOx HTL boosts the efficiency of the inverted planar heterojunction PeSCs from 13.46% (for the pristine NiOx-based device) to 16.86% (for the 2 at.% Ag: NiOx-based device). Furthermore, the environmental stability of PeSCs based on Ag: NiOx HTL is dramatically improved compared to devices based on organic HTLs and pristine NiOx HTLs. This work provides a simple and effective HTL material system for high-efficient and stable PeSCs. (C) 2017 Elsevier B.V. All rights reserved.
机译：在本文中，我们演示了基于掺杂银（Ag）的NiOx（Ag：NiOx）的新型无机空穴传输层（HTL）的高性能倒置平面异质结钙钛矿太阳能电池（PeSCs）。密度泛函理论（DFT）计算表明，Ag倾向于占据取代的Ni位点（Ag-Ni），并且在NiO晶格中表现为受体。与原始的NiOx薄膜相比，适当的Ag掺杂可以增加NiOx薄膜的光学透明度，功函，电导率和空穴迁移率。此外，在Ag：NiOx上生长的CH3NH3PbI3钙钛矿薄膜比在原始NiOx薄膜上生长的晶体具有更好的结晶度，更高的覆盖率和更光滑的表面，并具有密集堆积的较大晶粒。因此，Ag：NiOx HTL将倒置平面异质结PeSC的效率从13.46％（对于基于原始NiOx的器件）提高到16.86％（对于2 at。％Ag：基于NiOx的器件）。此外，与基于有机HTL和原始NiOx HTL的设备相比，基于Ag：NiOx HTL的PeSC的环境稳定性得到了显着改善。这项工作为高效稳定的PeSC提供了一种简单有效的HTL材料系统。 （C）2017 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2018年第ptab期|782-790|共9页
  • 作者

    Wei Ying; Yao Kai; Wang Xiaofeng; Jiang Yihua; Liu Xueyuan; Zhou Naigen; Li Fan;

  • 作者单位

    Nanchang Univ, Dept Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China;

    Nanchang Univ, Inst Photovolta, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China;

    Nanchang Univ, Dept Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China;

    Nanchang Univ, Dept Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China;

    Nanchang Univ, Dept Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China;

    Nanchang Univ, Dept Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China;

    Nanchang Univ, Dept Mat Sci & Engn, 999 Xuefu Ave, Nanchang 330031, Jiangxi, Peoples R China|Fudan Univ, State Key Lab Mol Engn Polymer, Shanghai 200433, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Perovskite solar cell; Nickel oxide; Hole-transporting layer; Efficiency; Stability;

    机译：钙钛矿太阳能电池氧化镍空穴传输层效率稳定性;

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