Chiral Lead Halide Perovskite Nanowires for Second-Order Nonlinear Optics,Nano Letters

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Chiral Lead Halide Perovskite Nanowires for Second-Order Nonlinear Optics
Nano Letters ( IF 9.6 ) Pub Date : 2018-08-13 00:00:00 , DOI: 10.1021/acs.nanolett.8b01616
Chunqing Yuan ₁ , Xinyue Li _{1,

2} , Sergey Semin ₂ , Yaqing Feng ₁ , Theo Rasing ₂ , Jialiang Xu _{1,

3}

Affiliation

Hybrid organic/inorganic lead halide perovskites (LHPs) have recently emerged as extremely promising photonic materials. However, the exploration of their optical nonlinearities has been mainly focused on the third- and higher-order nonlinear optical (NLO) effects. Strong second-order NLO responses are hardly expected from ordinary LHPs due to their intrinsic centrosymmetric structures, but are highly desirable for advancing their applications in the next generation integrated photonic circuits. Here we demonstrate the fabrication of a novel noncentrosymmetric LHP material by introducing chiral amines as the organic component. The nanowires grown from this new LHP material crystallize in a noncentrosymmetric P1 space group and demonstrate highly efficient second harmonic generation (SHG) with high polarization ratios and chiroptical NLO effects. Such a chiral perovskite skeleton could provide a new platform for future engineering of optoelectronic functionalities of hybrid perovskite materials.

中文翻译：

用于二阶非线性光学的手性卤化钙钛矿纳米线

混合有机/无机卤化铅钙钛矿（LHPs）最近已成为极有前途的光子材料。但是，对它们的光学非线性的探索主要集中在三阶和更高阶的非线性光学（NLO）效应上。普通的LHP由于其固有的中心对称结构，很难期望其具有强大的二阶NLO响应，但对于提高其在下一代集成光子电路中的应用而言，则是极为理想的。在这里，我们展示了通过引入手性胺作为有机组分来制备新型非中心对称LHP材料的过程。从这种新的LHP材料生长的纳米线在非中心对称的P中结晶1个空间群，展示了具有高极化比和手性NLO效应的高效二次谐波（SHG）。这样的手性钙钛矿骨架可以为杂化钙钛矿材料的光电功能的未来工程化提供一个新的平台。

更新日期：2018-08-13

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