Piles of Perovskites

  • ChemPubSoc Europe Logo
  • Author: ChemNanoMat
  • Published Date: 27 January 2020
  • Source / Publisher: ChemNanoMat/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: Piles of Perovskites

Perovskites are a class of materials with useful properties for different optoelectronic applications, such as LEDs and sensors. However, the high lead content of the common CsPbBr3 type and its limited stability both pose challenges for real-world applications. Cs4PbBr6 perovskites show green emission and have attracted attention as an alternative to CsPbBr3 due to their enhanced stability and reduced lead content. However, the synthesis of Cs4PbBr6 usually requires complex procedures, a variety of ligands, or a combination of solvents.


Cuncheng Li, University of Jinan, China, Haibo Zeng, Nanjing University of Science and Technology, China, and colleagues have developed an environmentally friendly, single-solvent, ligand-free route for the gram-scale synthesis of Cs4PbBr6 perovskite solids. The team combined lead bromide and cesium bromide in N,N‐dimethylformamide (DMF) under ambient conditions. Over 10 g ligand-free Cs4PbBr6 perovskite solids could be obtained after simply evaporating the solvent.


The solvent vapor can be recovered and reused. This process eliminates the potential environmental harm caused by using organic solvents. The product has strong photoluminescence, a high photoluminescence quantum yield, and a reversible fluorescent response towards heat and light.


 

 

Article Views: 734

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)published by Wiley-VCH