The existence and impact of persistent ferroelectric domains in MAPbI 3

Lauren M. Garten, David T. Moore, Sanjini U. Nanayakkara, Shyam Dwaraknath, Philip Schulz, Jake Wands, Angus Rockett, Brian Newell, Kristin A. Persson, Susan E. Trolier-McKinstry, David S. Ginley

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Methylammonium lead iodide (MAPbI 3 ) exhibits exceptional photovoltaic performance, but there remains substantial controversy over the existence and impact of ferroelectricity on the photovoltaic response. We confirm ferroelectricity in MAPbI 3 single crystals and demonstrate mediation of the electronic response by ferroelectric domain engineering. The ferroelectric response sharply declines above 57°C, consistent with the tetragonal-to-cubic phase transition. Concurrent band excitation piezoresponse force microscopy–contact Kelvin probe force microscopy shows that the measured response is not dominated by spurious electrostatic interactions. Large signal poling (>16 V/cm) orients the permanent polarization into large domains, which show stabilization over weeks. X-ray photoemission spectroscopy results indicate a shift of 400 meV in the binding energy of the iodine core level peaks upon poling, which is reflected in the carrier concentration results from scanning microwave impedance microscopy. The ability to control the ferroelectric response provides routes to increase device stability and photovoltaic performance through domain engineering.

Original languageEnglish (US)
Article numbereaas9311
JournalScience Advances
Volume5
Issue number1
DOIs
StatePublished - Jan 25 2019

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ferroelectricity
engineering
microscopy
mediation
iodides
iodine
photoelectric emission
stabilization
binding energy
routes
impedance
electrostatics
microwaves
scanning
probes
shift
single crystals
polarization
electronics
spectroscopy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • General

Cite this

Garten, L. M., Moore, D. T., Nanayakkara, S. U., Dwaraknath, S., Schulz, P., Wands, J., ... Ginley, D. S. (2019). The existence and impact of persistent ferroelectric domains in MAPbI 3 Science Advances, 5(1), [eaas9311]. https://doi.org/10.1126/sciadv.aas9311
Garten, Lauren M. ; Moore, David T. ; Nanayakkara, Sanjini U. ; Dwaraknath, Shyam ; Schulz, Philip ; Wands, Jake ; Rockett, Angus ; Newell, Brian ; Persson, Kristin A. ; Trolier-McKinstry, Susan E. ; Ginley, David S. / The existence and impact of persistent ferroelectric domains in MAPbI 3 In: Science Advances. 2019 ; Vol. 5, No. 1.
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Garten, LM, Moore, DT, Nanayakkara, SU, Dwaraknath, S, Schulz, P, Wands, J, Rockett, A, Newell, B, Persson, KA, Trolier-McKinstry, SE & Ginley, DS 2019, ' The existence and impact of persistent ferroelectric domains in MAPbI 3 ', Science Advances, vol. 5, no. 1, eaas9311. https://doi.org/10.1126/sciadv.aas9311

The existence and impact of persistent ferroelectric domains in MAPbI 3 . / Garten, Lauren M.; Moore, David T.; Nanayakkara, Sanjini U.; Dwaraknath, Shyam; Schulz, Philip; Wands, Jake; Rockett, Angus; Newell, Brian; Persson, Kristin A.; Trolier-McKinstry, Susan E.; Ginley, David S.

In: Science Advances, Vol. 5, No. 1, eaas9311, 25.01.2019.

Research output: Contribution to journalArticle

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AU - Wands, Jake

AU - Rockett, Angus

AU - Newell, Brian

AU - Persson, Kristin A.

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Garten LM, Moore DT, Nanayakkara SU, Dwaraknath S, Schulz P, Wands J et al. The existence and impact of persistent ferroelectric domains in MAPbI 3 Science Advances. 2019 Jan 25;5(1). eaas9311. https://doi.org/10.1126/sciadv.aas9311