Nature of Self-Trapped Exciton Emission in Zero-Dimensional Cs2ZrCl6 Perovskite Nanocrystals
(2023) In The Journal of Physical Chemistry Letters 14(34). p.7665-7671- 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... (More)
- 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. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/9f0defb4-5830-4f53-b7dd-cf4ba28cd77d
- author
- He, Yanmei LU ; Liu, Siping ; Yao, Zehan LU ; Zhao, Qian ; Chabera, Pavel LU ; Zheng, Kaibo LU ; Yang, Bin ; Pullerits, Tönu LU and Chen, Junsheng LU
- organization
- publishing date
- 2023-08-08
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of Physical Chemistry Letters
- volume
- 14
- issue
- 34
- pages
- 7 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85169294403
- pmid:37603899
- ISSN
- 1948-7185
- DOI
- 10.1021/acs.jpclett.3c01878
- language
- English
- LU publication?
- yes
- id
- 9f0defb4-5830-4f53-b7dd-cf4ba28cd77d
- date added to LUP
- 2023-09-13 17:12:34
- date last changed
- 2023-12-14 03:00:41
@article{9f0defb4-5830-4f53-b7dd-cf4ba28cd77d, 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 = {{He, Yanmei and Liu, Siping and Yao, Zehan and Zhao, Qian and Chabera, Pavel and Zheng, Kaibo and Yang, Bin and Pullerits, Tönu and Chen, Junsheng}}, issn = {{1948-7185}}, language = {{eng}}, month = {{08}}, number = {{34}}, pages = {{7665--7671}}, publisher = {{The American Chemical Society (ACS)}}, series = {{The Journal of Physical Chemistry Letters}}, title = {{Nature of Self-Trapped Exciton Emission in Zero-Dimensional Cs2ZrCl6 Perovskite Nanocrystals}}, url = {{http://dx.doi.org/10.1021/acs.jpclett.3c01878}}, doi = {{10.1021/acs.jpclett.3c01878}}, volume = {{14}}, year = {{2023}}, }