Reply to: On the ferroelectricity of CH3NH3PbI3 perovskites
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS); Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
- Asylum Research, Santa Barbara, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS); Pusan National Univ., Busan (South Korea)
- Univ. of Tennessee, Knoxville, TN (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS) and Computational Sciences and Engineering Division
First, we thank Schulz et al.1 for their response to our Article2. Schulz et al. raise a few concerns regarding the piezoresponse force microscopy (PFM) measurements and their interpretation, as well as the crystal orientation, which they claim brings into question our central conclusions. Accordingly, Schulz et al. conclude that ferroelectricity is responsible for the origin of the PFM signal. However, we do not agree with this conclusion as there is no measurable electromechanical contrast above 1 pm V-1 and there are strong mechanical and chemical variations inside the twin domains that, in our opinion, are behind the measured PFM signal.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1606956
- Journal Information:
- Nature Materials, Vol. 18, Issue 10; ISSN 1476-1122
- Publisher:
- Springer Nature - Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Ferroelectric Poling of Methylammonium Lead Iodide Thin Films
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journal | November 2019 |
Strain–Chemical Gradient and Polarization in Metal Halide Perovskites
|
journal | April 2020 |
Imaging Metal Halide Perovskites Material and Properties at the Nanoscale
|
journal | December 2019 |
Twin domains modulate light-matter interactions in metal halide perovskites
|
journal | January 2020 |
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