Direct lithography of CsPbCl3, CsPbBrxCl3-x and CsCdxPb1-xBr3 perovskite nanocrystals in organic media

Dale Xie; Chenqi Yi; Dong Zhong; Zongsong Gan

doi:10.1364/OE.529991

Direct lithography of CsPbCl₃, CsPbBr_xCl_3-x and CsCd_xPb_1-xBr₃ perovskite nanocrystals in organic media

Opt Express. 2024 Jul 29;32(16):27950-27957. doi: 10.1364/OE.529991.

Authors

Dale Xie, Chenqi Yi, Dong Zhong, Zongsong Gan

PMID: 39538620
DOI: 10.1364/OE.529991

Abstract

The in-situ generation of perovskite nanocrystals within organic media using a femtosecond laser can greatly simplify the sample preparation process and save pulse energy. In this work, three perovskite nanocrystals (PNCs), CsPbCl₃, CsPbBr_xCl_3-x, and CsCdxPb_1-xBr₃, were generated in situ within organic media using a femtosecond laser. These three perovskite nanocrystals emitted pure blue or blue-green fluorescence under ultraviolet (UV) irradiation. It was also found that by controlling the laser pulse energy, the CsCd_xPb_1-xBr₃ nanocrystals transitioned from green to blue-green fluorescence. Furthermore, we have successfully realized the patterning of these three perovskite nanocrystals in organic media.