title: The Impact of Phase Retention on the Structural and Optoelectronic Properties of Metal Halide Perovskites.
abstract: The extent to which the soft structural properties of metal halide perovskites affect their optoelectronic properties is unclear. X-ray diffraction and micro-photoluminescence measurements are used to show that there is a coexistence of both tetragonal and orthorhombic phases through the low-temperature phase transition, and that cycling through this transition can lead to structural changes and enhanced optoelectronic properties.
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
authors.forename: Anna
authors.initials: A
authors.lastname: Osherov
authors.affiliation: Opto-electronic Materials Section, Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629, HZ, Delft, The Netherlands.
authors.forename: Eline M
authors.initials: EM
authors.lastname: Hutter
authors.affiliation: Laboratoire National des Champs Magnetiques Intenses, CNRS-UJF-UPS-INSA, 143 avenue de Rangueil, 31400, Toulouse, France.|Faculty of Physics, Institute of Experimental Physics, University of Warsaw - Pasteura 5, 02-093, Warsaw, Poland.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Galkowski
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
authors.forename: Roberto
authors.initials: R
authors.lastname: Brenes
authors.affiliation: Laboratoire National des Champs Magnetiques Intenses, CNRS-UJF-UPS-INSA, 143 avenue de Rangueil, 31400, Toulouse, France.
authors.forename: Duncan K
authors.initials: DK
authors.lastname: Maude
authors.affiliation: University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU, UK.
authors.forename: Robin J
authors.initials: RJ
authors.lastname: Nicholas
authors.affiliation: Laboratoire National des Champs Magnetiques Intenses, CNRS-UJF-UPS-INSA, 143 avenue de Rangueil, 31400, Toulouse, France.
authors.forename: Paulina
authors.initials: P
authors.lastname: Plochocka
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.
authors.forename: Vladimir
authors.initials: V
authors.lastname: Bulović
authors.affiliation: Opto-electronic Materials Section, Department of Chemical Engineering, Delft University of Technology, van der Maasweg 9, 2629, HZ, Delft, The Netherlands.
authors.forename: Tom J
authors.initials: TJ
authors.lastname: Savenije
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, 02139, USA.|Cavendish Laboratory, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
authors.forename: Samuel D
authors.initials: SD
authors.lastname: Stranks
keywords: X-ray diffraction; low-temperature; optoelectronics; perovskite solar cells; photoluminescence