The Impact of Phase Retention on the Structural and Optoelectronic Properties of Metal Halide Perovskites

Adv Mater. 2016 Dec;28(48):10757-10763. doi: 10.1002/adma.201604019. Epub 2016 Oct 19.

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.

Keywords: X-ray diffraction; low-temperature; optoelectronics; perovskite solar cells; photoluminescence.