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Cited by 586

The DOI matches its Crossref record; 51 of the 51 references it cites were found in a registry or an index.

Structures, Phase Transitions and Tricritical Behavior of the Hybrid Perovskite Methyl Ammonium Lead Iodide

Open access
Whitfield, P. S., Herron, N., Guise, W. E., Page, K., Cheng, Y. Q., Milas, I., Crawford, M. K.·2016·Scientific Reports
DOI 10.1038/srep35685
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Abstract

We have examined the crystal structures and structural phase transitions of the deuterated, partially deuterated and hydrogenous organic-inorganic hybrid perovskite methyl ammonium lead iodide (MAPbI 3) using time-of-flight neutron and synchrotron X-ray powder diffraction. Near 330 K the high temperature cubic phases transformed to a body-centered tetragonal phase. The variation of the order parameter Q for this transition scaled with temperature T as Q ∼ (T c−T)β, where T c is the critical temperature and the exponent β was close to ¼, as predicted for a tricritical phase transition. However, we also observed coexistence of the cubic and tetragonal phases over a range of temperature in all cases, demonstrating that the phase transition was in fact first-order, although still very close to tricritical. Upon cooling further, all the tetragonal phases transformed into a low temperature orthorhombic phase around 160 K, again via a first-order phase transition. Based upon these results, we discuss the impact of the structural phase transitions upon photovoltaic performance of MAPbI 3 based solar cells.

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Metadata

Authors
Whitfield, P. S., Herron, N., Guise, W. E., Page, K., Cheng, Y. Q., Milas, I., & Crawford, M. K.
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2016-10-21
Volume
6
Issue
1
Pages
35685-35685
ISSN
2045-2322 (ISSN-L)
DOI
10.1038/srep35685
OpenAlex
W2537132801
Cited by
586
References
51
FWCI
25.15
Type
journal article
Language
en
Open access
gold

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