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<p>In this work, CsPbBr<sub>3</sub> Perovskite Nanocrystals (NCs) is synthesized using conventional colloidal route. Non-linear optical effects along with material characterization and optical characterization is studied. Second Harmonic Generation (SHG) and Third Harmonic Generation (THG) are observed at 773&#xa0;nm and 516&#xa0;nm respectively when excited with 1550&#xa0;nm excitation wavelength. SHG is 15.6 times weaker than quartz while THG is 3.5 times stronger than a-Si. CsPbBr<sub>3</sub> NCs have cubic morphology (edge length ~ 13&#xa0;nm), shows emission peak at 530&#xa0;nm, Photoluminescence Quantum Yield (PLQY) of 71.42% and Commission Internationale de l’éclairage (CIE) (0.13, 0.79) with excellent stability of two years.</p> Graphical abstract <p></p>

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Studies on second and third harmonic generation in CsPbBr3 perovskite nanocrystals

  • 期刊论文

  • 发表日期：

    2025年11月3日

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  • Chandrima Goswami,
  • Jyothsna Konkada Manattayil,
  • Urmila Bag,
  • Varun Raghunathan,
  • Asha Bhardwaj

摘要

In this work, CsPbBr3 Perovskite Nanocrystals (NCs) is synthesized using conventional colloidal route. Non-linear optical effects along with material characterization and optical characterization is studied. Second Harmonic Generation (SHG) and Third Harmonic Generation (THG) are observed at 773 nm and 516 nm respectively when excited with 1550 nm excitation wavelength. SHG is 15.6 times weaker than quartz while THG is 3.5 times stronger than a-Si. CsPbBr3 NCs have cubic morphology (edge length ~ 13 nm), shows emission peak at 530 nm, Photoluminescence Quantum Yield (PLQY) of 71.42% and Commission Internationale de l’éclairage (CIE) (0.13, 0.79) with excellent stability of two years.

Graphical abstract