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Probing compositional engineering effects on lead-free perovskite-inspired nanocrystal thin films using correlative
Shambhavee Annurakshita1, Maning Liu2,3,4, Paola Vivo2
1Photonics Laboratory, Physics Unit, Tampere University, Korkeakoulunkatu 3, 33720, Tampere, Finland. gsbautista1@gmail.com.
Nanoscale
|January 17, 2024
Summary
We developed a sensitive microscopy technique to study manganese-doped bismuth-based perovskite nanocrystals. This method precisely detects composition variations and controls their nonlinear optical properties at the nanoscale.
Area of Science:
- Materials Science
- Nanotechnology
- Optics
Background:
- Bismuth (Bi)-based perovskite-inspired nanocrystals are promising functional materials.
- Understanding dopant effects on their nanoscale properties is crucial for advanced applications.
- Nonlinear optical properties are key for optical conversion technologies.
Purpose of the Study:
- To investigate the impact of manganese (Mn) doping on bismuth (Bi)-based perovskite-inspired nanocrystal thin films.
- To demonstrate a novel correlative microscopy technique for nanoscale material analysis.
- To explore the manipulation of nonlinear optical responses in doped perovskite films.
Main Methods:
- Correlative third-harmonic generation (THG) and multiphoton-induced luminescence (MIL) microscopy.
- Application of THG-MIL microscopy to Mn-doped Bi-based perovskite-inspired nanocrystal thin films.
- Analysis of nanoscale structural compositions and optical responses.
Main Results:
- The THG-MIL microscopy technique showed high sensitivity to microscopic film features and structural compositions.
- Unambiguous detection of compositionally different emitters within the perovskite film was achieved.
- Successful manipulation of nonlinear optical responses in the doped nanocrystals was demonstrated.
Conclusions:
- Correlative THG-MIL microscopy is a powerful tool for investigating perovskite-inspired materials at the nanoscale.
- Mn doping significantly influences the optical properties of Bi-based perovskite nanocrystals.
- This work opens new avenues for exploiting these materials in nanoscale nonlinear optical applications.
