Growth of van der Waals Halide Perovskites within the Interlayer Spacings of Mica
Growth of van der Waals Halide Perovskites within the Interlayer Spacings of Mica
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DOI：
10.1021/acs.jpcc.2c06379
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发表时间：
2022-11
期刊：
影响因子：
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通讯作者：
S. Pendse;Yang Hu;Ru Jia;Zhizhong Chen;Lifu Zhang;S. Williams;Jie Jiang;E. Fohtung;Jian Shi
中科院分区：
文献类型：
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作者：
S. Pendse;Yang Hu;Ru Jia;Zhizhong Chen;Lifu Zhang;S. Williams;Jie Jiang;E. Fohtung;Jian Shi
在过去的几年里，二维有机-无机混合钙钛矿（2D-HOIP）已被广泛研究用于太阳能电池和光电子器件。单晶2D-HOIP薄膜的可控生长一直被认为是开发高性能终端器件的关键组成部分。在这里，我们报告了一种基于溶液的方法，使用白云母作为货车德瓦尔斯衬底，产生毫米级的钙钛矿薄片的2D-HOIP的生长。有趣的是，生长的2D-HOIP薄片嵌入在白云母的层间间距内。我们发现，这样的2D-HOIP片埋在云母表现出增强的光稳定性相比，传统的2D-HOIP片。这种在货车德瓦耳斯衬底的层间距中的液相生长为开发用于设计光电器件的新型材料结构开辟了新途径。
Two-dimensional hybrid organic–inorganic perovskites (2D-HOIPs) have been extensively researched for use in solar cells as well as optoelectronic devices over the past few years. Controllable growth of single-crystalline 2D-HOIP thin films has been regarded as a key component for the development of high-performance end devices. Here, we report a solution-based method for the growth of 2D-HOIPs using muscovite mica as a van der Waals substrate that yields millimeter-scale perovskite flakes. Interestingly, the grown 2D-HOIP flakes lie embedded within the interlayer spacings of muscovite mica. We find that such 2D-HOIP flakes buried in mica demonstrate enhanced photostability in comparison to conventional 2D-HOIP flakes. Such liquid-phase growth in the interlayer spacings of van der Waals substrates opens a new avenue for developing novel material structures for designing optoelectronic devices.