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

Tzu Pei Chen, Jun Xiao Lin, Cheng Chieh Lin, Chi Ying Lin, We Chen Ke, Di Yan Wang, Hua Shu Hsu, Chia Chun Chen, Chun Wei Chen

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)10279-10286
Number of pages8
JournalACS Applied Materials and Interfaces
Volume13
Issue number8
DOIs
Publication statusAccepted/In press - 2021

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)

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