Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session B63: Spectroscopy of Halide Perovskites
11:15 AM–2:15 PM,
Monday, March 2, 2020
Room: Mile High Ballroom 4D
Sponsoring Unit: DMP
Chair: Gustavo M. Dalpian
Abstract: B63.00006 : Third-order optical nonlinearities of lead halide perovskite single crystals*
In this work, we determined the third-order nonlinear optical coefficients of the wide-gap semiconductor MAPbCl3 single crystals by using the Z-scan method. We measured the excitation wavelength and polarization dependences of these coefficients. It is found that the absolute values of coefficients depended on the crystal orientation of perovskite single crystals. These excitation wavelength dependences can be quantitatively explained by a two-band model including the exciton effect and Kane’s kp theory. The Kane energy and the exciton reduced mass of MAPbCl3 were determined .
 T. Handa et al., Sci. Adv. 5, eaax0786 (2019).
 H. Hirori et al., APL Mater. 7, 041107 (2019).
 K. Ohara et al., Phys. Rev. Mater. 3 (2019) in press.
*Part of this work was supported by KAKENHI (19H05465) and JST-CREST (JPMJCR16N3).
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