Abstract

Low dimensional perovskite-inspired materials with self-tapped exciton (STE) emission have stimulated a surge of cutting-edge research in optoelectronics. Despite numerous efforts on developing versatile low-dimensional perovskite-inspired materials with efficient STE emissions, there is little emphasis on the intrinsic dynamics of STE-based broad emission in these materials. Here, we investigated the excited state dynamics in zero-dimensional (0D) Cs2ZrCl6 nanocrystals (NCs) with efficient blue STE emission. By using femtosecond transient absorption (fs-TA) spectroscopy, the ultrafast STE formation process within 400 fs is directly observed. Then, the formed STEs relax to an intermediate STE state with a lifetime of ∼180 ps before reaching the emissive STE state with a lifetime of ∼15 μs. Our work offers a comprehensive and precise dynamic picture of STE emission in low-dimensional metal halides and sheds light on extending their potential applications.
Original languageEnglish
Pages (from-to)7665-7671
Number of pages7
JournalThe Journal of Physical Chemistry Letters
Volume14
Issue number34
DOIs
Publication statusPublished - 2023 Aug 8

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics
  • Condensed Matter Physics
  • Physical Chemistry

Fingerprint

Dive into the research topics of 'Nature of Self-Trapped Exciton Emission in Zero-Dimensional Cs2ZrCl6 Perovskite Nanocrystals'. Together they form a unique fingerprint.

Cite this