Mechanism for rapid growth of organic-inorganic halide perovskite crystals.
Mechanism for rapid growth of organic-inorganic halide perovskite crystals.
复制标题
有机无机卤化物钙钛矿晶体快速生长的机制。
DOI：
10.1038/ncomms13303
复制
发表时间：
2016-11-10
影响因子：
16.6
通讯作者：
Snaith, Henry J.
中科院分区：
文献类型：
--
作者：
Nayak, Pabitra K.;Moore, David T.;Wenger, Bernard;Nayak, Simantini;Haghighirad, Amir A.;Fineberg, Adam;Noel, Nakita K.;Reid, Obadiah G.;Rumbles, Garry;Kukura, Philipp;Vincent, Kylie A.;Snaith, Henry J.
基于杂化卤化物钙钛矿的光电器件在高性能方面取得了显著进展。然而，尽管它们取得了明显的成功，但它们的内在特性仍有许多悬而未决的问题。单晶通常被视为理解晶体材料极限的理想平台，最近关于单晶快速高温结晶的报道应该能够进行各种研究。在这里，我们探索了这种结晶的机制，发现这是由于溶液中胶体的破裂和溶剂强度的变化引起的可逆变化，导致过饱和和随后的结晶。我们利用这些知识来展示更广泛的加工参数，并表明这些参数可以提高晶体质量。因此，我们的发现对于钙钛矿光电子学的持续发展以及通过更好地理解影响和控制结晶的因素来提高可重复性具有至关重要的意义。卤化铅钙钛矿单晶具有良好的光电性能。在这里，作者研究并推导了结晶的机制，并展示了如何通过改变酸度和温度来控制胶体的溶解，从而提高单晶的质量。
Optoelectronic devices based on hybrid halide perovskites have shown remarkable progress to high performance. However, despite their apparent success, there remain many open questions about their intrinsic properties. Single crystals are often seen as the ideal platform for understanding the limits of crystalline materials, and recent reports of rapid, high-temperature crystallization of single crystals should enable a variety of studies. Here we explore the mechanism of this crystallization and find that it is due to reversible changes in the solution where breaking up of colloids, and a change in the solvent strength, leads to supersaturation and subsequent crystallization. We use this knowledge to demonstrate a broader range of processing parameters and show that these can lead to improved crystal quality. Our findings are therefore of central importance to enable the continued advancement of perovskite optoelectronics and to the improved reproducibility through a better understanding of factors influencing and controlling crystallization. Single crystals of lead halide perovskites exhibit good optoelectronic properties. Here, the authors study and deduce the mechanism for crystallisation and show how controlling dissolution of colloids through varying the acidity and temperature can improve the quality of the single crystals.
登录
查看更多内容
影响因子：
35
作者：
Lin, Qianqian;Armin, Ardalan;Meredith, Paul
通讯作者：
Meredith, Paul
影响因子：
15
作者：
Yamada, Yasuhiro;Yamada, Takumi;Kanemitsu, Yoshihiko
通讯作者：
Kanemitsu, Yoshihiko
影响因子：
14.8
作者：
Arroyo, Jaime Ortega;Cole, Daniel;Kukura, Philipp
通讯作者：
Kukura, Philipp
影响因子：
29.4
作者：
Berry, Joseph;Buonassisi, Tonio;Cahen, David
通讯作者：
Cahen, David
具有令人兴奋的室温稳定性的块体立方相 CH3NH3PbI3 单晶的可控生长
影响因子：
3.1
作者：
Luan, Mengyu;Song, Junling;Liu, Jiehua
通讯作者：
Liu, Jiehua