Papers

Peer-reviewed International journal
Nov, 2019

Excitonic enhancement of optical nonlinearities in perovskite CH3NH3PbCl3 single crystals

Physical Review Materials
  • Keiichi Ohara
  • ,
  • Takumi Yamada
  • ,
  • Hirokazu Tahara
  • ,
  • Tomoko Aharen
  • ,
  • Hideki Hirori
  • ,
  • Hidekatsu Suzuura
  • ,
  • Yoshihiko Kanemitsu

Volume
3
Number
11
First page
111601(R)-1
Last page
111601(R)-6
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1103/PhysRevMaterials.3.111601
Publisher
American Physical Society

Metal halide perovskites have emerged as versatile photonic device materials because of their outstanding band structure and excellent optical properties. Here, we determined the excitation wavelength dependences of the two-photon absorption coefficient and the Kerr-effect-induced nonlinear refractive index of CH3NH3PbCl3 perovskite single crystals by means of the Z-scan method. From theoretical analysis, we found that the electron-hole interaction, so-called exciton effect, significantly enhances the nonlinear optical responses even for the interband transitions. This interaction explains the universal relation between the exciton reduced mass and the bandgap for lead halide perovskites.

Link information
DOI
https://doi.org/10.1103/PhysRevMaterials.3.111601
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000495075600001&DestApp=WOS_CPL
ID information
  • DOI : 10.1103/PhysRevMaterials.3.111601
  • ISSN : 2475-9953
  • ORCID - Put Code : 66260770
  • Web of Science ID : WOS:000495075600001

Export
BibTeX RIS