期刊
NANO LETTERS
卷 18, 期 9, 页码 5411-5417出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.8b01616
关键词
Chiral perovskite; nanowire; nonlinear optics; second harmonic generation
类别
资金
- National Natural Science Foundation of China [21773168, 51503143, 21761132007]
- Tianjin Natural Science Foundation [16JCQNJC05000]
- National Key R&D Program of China [2016YFE0114900]
- 111 Project of China [B18030]
- Innovation Foundation of Tianjin University [2016XRX-0017]
- Tianjin 1000 Youth Talents Plan
- Netherlands Organization for Scientific Research (NWO)
- Veni Grant [680-47-437]
- Royal Netherlands Academy of Arts and Sciences (KNAW)
- China-Exchange Program [530-4CDP02]
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.
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