Electro-Optic Modulation in Hybrid Metal Halide Perovskites

Advanced Materials
Yuan GaoEdward H Sargent

Abstract

Rapid and efficient conversion of electrical signals to optical signals is needed in telecommunications and data network interconnection. The linear electro-optic (EO) effect in noncentrosymmetric materials offers a pathway to such conversion. Conventional inorganic EO materials make on-chip integration challenging, while organic nonlinear molecules suffer from thermodynamic molecular disordering that decreases the EO coefficient of the material. It has been posited that hybrid metal halide perovskites could potentially combine the advantages of inorganic materials (stable crystal orientation) with those of organic materials (solution processing). Here, layered metal halide perovskites are reported and investigated for in-plane birefringence and linear electro-optic response. Phenylmethylammonium lead chloride (PMA2 PbCl4 ) crystals are grown that exhibit a noncentrosymmetric space group. Birefringence measurements and Raman spectroscopy confirm optical and structural anisotropy in the material. By applying an electric field on the crystal surface, the linear EO effect in PMA2 PbCl4 is reported and its EO coefficient is determined to be 1.40 pm V-1 . This is the first demonstration of this effect in hybrid metal halide perovski...Continue Reading

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Citations

Dec 17, 2020·Advanced Materials·Meng-Jia SunEdward H Sargent
Feb 10, 2021·Proceedings of the National Academy of Sciences of the United States of America·Sebastian F MaehrleinX-Y Zhu
Feb 19, 2021·ACS Applied Materials & Interfaces·Tzu-Pei ChenChun-Wei Chen
Mar 24, 2021·The Journal of Physical Chemistry Letters·Yi WeiHaibo Zeng
Apr 16, 2021·ACS Applied Materials & Interfaces·Yuan GaoEdward H Sargent
May 22, 2021·The Journal of Physical Chemistry Letters·Feifan WangX-Y Zhu
Jan 7, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Zhongcheng LiangTao Chen

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