4.8 Article

Strong Excitonic Magneto-Optic Effects in Two-Dimensional Organic-Inorganic Hybrid Perovskites

期刊

ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 8, 页码 10279-10286

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c20863

关键词

two-dimensional perovskite; magnetic circular dichroism; Faraday rotation; exciton; broadband

资金

  1. Ministry of Science and Technology (MOST), Taiwan (R.O.C.)
  2. Taiwan Consortium of Emergent Crystalline Materials (TCECM) [107-2112-M-002-024-MY3, 108-2923-M-002-002-MY2, 109-2112-M-153-004]
  3. Center of Atomic Initiative for New Materials (AI-Mat), National Taiwan University
  4. Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education in Taiwan [108L9008]

向作者/读者索取更多资源

This work demonstrates the strong excitonic magneto-optic effects of magnetic circular dichroism and Faraday rotation in nonmagnetic two-dimensional organic-inorganic hybrid Ruddlesden-Popper perovskites at room temperature, opening up new research directions for MO and magneto-optoelectronic applications.
This work demonstrates the strong excitonic magneto-optic (MO) effects of magnetic circular dichroism (MCD) and Faraday rotation (FR) in nonmagnetic two-dimensional (2D) organic-inorganic hybrid Ruddlesden-Popper perovskites (RPPs) at room temperature. Due to their strong and sharp excitonic absorption as a result of unique quantum well structures of 2D RPPs, sizeable linear excitonic MO effects of MCD and FR can be observed at room temperature under a low magnetic field (<1 T) compared with their three-dimensional counterpart. In addition, since the band gaps of 2D organic-inorganic hybrid perovskites can be manipulated either by changing the number n of inorganic octahedral slabs per unit cell or through halide engineering, linear excitonic MO effects of 2D-RPPs can be observed through the broadband spectral ranges of visible light. Our result may pave the way for the promising research field of MO and magneto-optoelectronic applications based on 2D organic-inorganic hybrid perovskites with facile solution processes.

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