Mechanism for Rapid Growth of Organic-Inorganic Halide Perovskite Crystals

David Moore, Obadiah Reid, Garry Rumbles, Pabitra Nayak, Bernard Wenger, Amir Haghighirad, Nakita Noel, Henry Snaith, Simantini Nayak, Kylie Vincent, Adam Fineberg, Philipp Kukura

Research output: Contribution to journalArticlepeer-review

197 Scopus Citations

Abstract

Optoelectronic devices based on hybrid halide perovskites have shown remarkable progress to high performance. However, despite their apparent success, there remain many open questions about their intrinsic properties. Single crystals are often seen as the ideal platform for understanding the limits of crystalline materials, and recent reports of rapid, high-temperature crystallization of single crystals should enable a variety of studies. Here we explore the mechanism of this crystallization and find that it is due to reversible changes in the solution where breaking up of colloids, and a change in the solvent strength, leads to supersaturation and subsequent crystallization. We use this knowledge to demonstrate a broader range of processing parameters and show that these can lead to improved crystal quality. Our findings are therefore of central importance to enable the continued advancement of perovskite optoelectronics and to the improved reproducibility through a better understanding of factors influencing and controlling crystallization.

Original languageAmerican English
Article number13303
Number of pages8
JournalNature Communications
Volume7
DOIs
StatePublished - 10 Nov 2016

Bibliographical note

Publisher Copyright:
© 2016 The Author(s).

NREL Publication Number

  • NREL/JA-5900-67512

Keywords

  • crystallization
  • optoelectronics
  • perovskites
  • solar-photochemistry

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