@article{9f0defb458304f53b7ddcf4ba28cd77d,
title = "Nature of Self-Trapped Exciton Emission in Zero-Dimensional Cs2ZrCl6 Perovskite Nanocrystals",
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.",
author = "Yanmei He and Siping Liu and Zehan Yao and Qian Zhao and Pavel Chabera and Kaibo Zheng and Bin Yang and T{\"o}nu Pullerits and Junsheng Chen",
year = "2023",
month = aug,
day = "8",
doi = "10.1021/acs.jpclett.3c01878",
language = "English",
volume = "14",
pages = "7665--7671",
journal = "The Journal of Physical Chemistry Letters",
issn = "1948-7185",
publisher = "The American Chemical Society (ACS)",
number = "34",
}