An overview of the decompositions in organo-metal halide perovskites and shielding with 2-dimensional perovskites
An overview of the decompositions in organo-metal halide perovskites and shielding with 2-dimensional perovskites
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有机金属卤化物钙钛矿的分解和二维钙钛矿屏蔽的概述
DOI：
10.1016/j.rser.2019.04.022
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发表时间：
2019-07
影响因子：
15.9
通讯作者：
Wu Huizhen
中科院分区：
文献类型：
--
作者：
Ali Nasir;Rauf Sajid;Kong Weiguang;Ali Shahid;Wang Xiaoyu;Khesro Amir;Yang Chang Ping;Zhu Bin;Wu Huizhen
尽管有机金属卤化物钙钛矿太阳能电池合成简便且功率转换效率空前提高，但它也有其阴暗面。他们内在的环境不稳定性。一点水分、刺眼的紫外线和稍高的热应力都会迅速将其分解成其成分。解决这些不稳定问题是下一代太阳能电池技术商业化的先决条件。为了了解钙钛矿的降解机制，人们提出了不同的模型。同样，为了防止他们受到环境危害，也采取了各种策略。例如，2D 钙钛矿作为 3D 钙钛矿的稳定替代品被引入。然而，由于其带隙较宽，2D 钙钛矿在功率转换效率的竞赛中未能与 3D 钙钛矿竞争。因此，引入了一种混合 2D/3D 钙钛矿，它结合了 3D 钙钛矿的高功率转换效率和 2D 钙钛矿的扩展环境稳定性。本综述的第一部分详细讨论了由于环境因素导致的钙钛矿分解背后的拟议机制，包括：湿度、辐射和热应力。同时，第二部分总结了防止钙钛矿降解所采取的几种策略；特别是用 2D 钙钛矿屏蔽 3D 钙钛矿的策略，这是最有前途的一种策略。此外，这篇综述还详细介绍了纯 2D、准 2D 和混合 2D/3D 钙钛矿太阳能电池领域的总体进展。最后，对钙钛矿太阳能电池商业化过程中仍面临的挑战进行了简要展望，并对可能的解决方案提出了看法。
Despite their facile synthesis and unprecedently increased power conversion efficiency, there is a dark side of organo-metal halide perovskites solar-celli.e. their intrinsic environmental instability. A little moisture, harsh ultraviolet-light, and slightly higher thermal stress demolish it quickly into its constituents. A solution to these instability issues is a prerequisite to commercialize this next-generation solar-cell technology. To understand the degradation mechanism in perovskites, different models have been proposed. Similarly, to prevent them from environmental hazards, various strategies have been adopted. For instance, 2D-perovskites are introduced as a stable alternative to their 3D-counterparts. However, due to their wider bandgaps, 2D-perovskites failed to compete with 3D-perovskites in the race of power conversion efficiency. Therefore, a hybrid 2D/3D-perovskites are introduced which brought together, the high power conversion efficiency of 3D-perovskites and extended environmental stability of their 2D counterparts. The first section of this review discusses in detail about the proposed mechanisms behind the perovskites decompositions due to environmental factors including; humidity, radiation, and thermal stress. While, the second part summarizes several strategies adopted to prevent perovskites degradation; particularly, the strategy of shielding 3D-perovskites with its 2D counterpart, which is the most promising one. Furthermore, this review provides details of the overall progress been made in the field of pure-2D, quasi-2D, and hybrid-2D/3D perovskites solar-cells. In the end, a brief outlook on the challenges remaining in the way of commercialization of perovskites solar-cells and our opinion to their possible solutions is given.
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影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
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作者：
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影响因子：
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作者：
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