Room-temperature liquid diffused separation induced crystallization for high-quality perovskite single crystals.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 32132533.
- Also identified by DOI 10.1038/s41467-020-15037-x and PMC identifier 7055282.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Large single crystals serve as an ideal platform for investigating intrinsic material properties and optoelectronic applications. Here we develop a method, namely, room-temperature liquid diffused separation induced crystallization that uses silicone oil to separate the solvent from the perovskite precursors, to grow high-quality perovskite single crystals. The growth kinetics of perovskite single crystals using this method is elucidated, and their structural and optoelectronic properties are carefully characterized. The resultant perovskite single crystals, taking CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> as an example, exhibit approximately 1 µs lifetime, a low trap density of 4.4 × 10<sup>9</sup> cm<sup>-3</sup>, and high yield of 92%, which are appealing for visible light or X-ray detection. We hope our findings will be of great significance for the continued advancement of high-quality perovskite single crystals, through a better understanding of growth mechanisms and their deployment in various optoelectronics. The diffused separation induced crystallization strategy presents a major step forward for advancing the field on perovskite single crystals.