Do the Halide Ions Exchange and Mix the Same Way in Fresh and Aged CsPbI 3 - CsPbBr 3 Perovskite Nanocrystals mixture?

Key Points

• This research aims to investigate how halide ions exchange and mix in fresh and aged mixtures of CsPbI3 and CsPbBr3 nanocrystals.
• Analyzed fresh and aged CsPbI3-CsPbBr3 nanocrystals
• Studied mixing behavior of halide ions
• Measured quantum yield and absorption characteristics
• Both fresh and aged mixtures showed high quantum yield
• Mixing behavior differed between fresh and aged samples
• Results indicate potential stability issues in aged nanocrystals