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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
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Engineering the Optical Properties of CsPbBr3 Nanoplatelets through Cd2+ Doping
Ivan D Skurlov1, Anastasiia V Sokolova1, Danila A Tatarinov1
1PhysNano Department, ITMO University, 197101 Saint Petersburg, Russia.
Materials (Basel, Switzerland)
|November 11, 2022
Summary
This study introduces a new method for doping lead halide perovskite nanoplatelets with cadmium. Optimized doping significantly enhances their optical properties for applications in nonlinear optics and photonics.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Lead halide perovskite nanoplatelets (NPls) exhibit tunable optical properties.
- Doping is a key strategy for enhancing nanostructure optical characteristics.
- B-site doping protocols for 2D perovskite NPls are underexplored.
Purpose of the Study:
- Investigate post-synthetic Cd2+ doping of CsPbBr3 NPls.
- Optimize doping conditions for improved optical performance.
- Explore applications in nonlinear optics and photonics.
Main Methods:
- Post-synthetic treatment of CsPbBr3 NPls with various Cd2+ sources.
- Investigated precursor, concentration, and ligand effects on doping kinetics.
- Characterized optical properties, including linear and nonlinear responses.
Main Results:
- Cd2+ doping and surface passivation significantly boost optical properties.
- Moderate doping levels dramatically enhance photoluminescence quantum yield.
- Two-photon absorption cross-section shows a substantial increase.
Conclusions:
- Developed effective post-synthetic doping protocols for CsPbBr3 NPls.
- Optimized doping enhances linear and nonlinear optical properties.
- Facilitates perovskite NPls' use in advanced optical applications.
