Large-Area Perovskite Nanocrystal Metasurfaces for Direction-Tunable Lasing

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Nanli Mou
  • Bing Tang
  • Bowen Han
  • Jingyue Yu
  • Delin Zhang
  • Zichun Bai
  • Mou Zhong
  • Biye Xie
  • Zhaoyu Zhang
  • Shikai Deng
  • Jingtian Hu
  • Jun Guan

Detail(s)

Original languageEnglish
Pages (from-to)12676–12683
Journal / PublicationNano Letters
Volume24
Issue number40
Online published25 Sept 2024
Publication statusPublished - 9 Oct 2024

Abstract

Perovskite nanocrystals (PNCs) are attractive emissive materials for developing compact lasers. However, manipulation of PNC laser directionality has been difficult, which limits their usage in photonic devices that require on-demand tunability. Here we demonstrate PNC metasurface lasers with engineered emission angles. We fabricated millimeter-scale CsPbBr3 PNC metasurfaces using an all-solution-processing technique based on soft nanoimprinting lithography. By designing band-edge photonic modes at the high-symmetry X point of the reciprocal lattice, we achieved four linearly polarized lasing beams along a polar angle of ∼30° under optical pumping. The device architecture further allows tuning of the lasing emission angles to 0° and ∼50°, respectively, by adjusting the PNC thickness to shift other high-symmetry points (Γ and M) to the PNC emission wavelength range. Our laser design strategies offer prospects for applications in directional optical antennas and detectors, 3D laser projection displays, and multichannel visible light communication. © 2024 American Chemical Society.

Research Area(s)

  • laser directionality, metasurface, nanoimprinting, perovskite nanocrystals, photonic band structure

Citation Format(s)

Large-Area Perovskite Nanocrystal Metasurfaces for Direction-Tunable Lasing. / Mou, Nanli; Tang, Bing; Han, Bowen et al.
In: Nano Letters, Vol. 24, No. 40, 09.10.2024, p. 12676–12683.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review