High-Quality Solution-Processed Quasi-2D Perovskite for Low-Threshold Lasers
(2024) In ACS Applied Materials and Interfaces- Abstract
Spin-coated quasi-two-dimensional halide perovskite films, which exhibit superior optoelectronic properties and environmental stability, have recently been extensively studied for lasers. Crystallinity is of great importance for the laser performance. Although some parameters related to the spin-coating process have been studied, the in-depth understanding and effective control of the acceleration rate on two-dimensional perovskite crystallization during spin-coating are still unknown. Here we investigate the effect of solvent evaporation on the microstructure of the final perovskite films during the spin-coating process. The crystallization quality of the film can be significantly improved by controlling solvent evaporation. As a... (More)
Spin-coated quasi-two-dimensional halide perovskite films, which exhibit superior optoelectronic properties and environmental stability, have recently been extensively studied for lasers. Crystallinity is of great importance for the laser performance. Although some parameters related to the spin-coating process have been studied, the in-depth understanding and effective control of the acceleration rate on two-dimensional perovskite crystallization during spin-coating are still unknown. Here we investigate the effect of solvent evaporation on the microstructure of the final perovskite films during the spin-coating process. The crystallization quality of the film can be significantly improved by controlling solvent evaporation. As a result, the prepared quasi-2D perovskite film exhibits a stimulated emission threshold (pump: 343 nm, 6 kHz, 290 fs) of 550 nm as low as 16.2 μJ/cm2. Transient absorption characterization shows that the radiative biexciton recombination time is reduced from 738.5 to 438.3 ps, benefiting from the improved crystallinity. The faster biexciton recombination significantly enhanced the photoluminescence efficiency, which is critical for population inversion. This work could contribute to the development of low-threshold lasers.
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- author
- Zhao, Kefan ; Wang, Yujing ; Lin, Kai ; Ji, Ting ; Shi, Linlin ; Zheng, Kaibo LU ; Cui, Yanxia and Li, Guohui
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- in press
- subject
- keywords
- amplified spontaneous emission, biexciton, high crystalline quality, low threshold, perovskite
- in
- ACS Applied Materials and Interfaces
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85190721247
- pmid:38628106
- ISSN
- 1944-8244
- DOI
- 10.1021/acsami.4c00308
- language
- English
- LU publication?
- yes
- id
- f679c435-ca87-4210-aebb-c17a7aa45f79
- date added to LUP
- 2024-05-03 09:36:29
- date last changed
- 2024-05-17 12:02:20
@article{f679c435-ca87-4210-aebb-c17a7aa45f79, abstract = {{<p>Spin-coated quasi-two-dimensional halide perovskite films, which exhibit superior optoelectronic properties and environmental stability, have recently been extensively studied for lasers. Crystallinity is of great importance for the laser performance. Although some parameters related to the spin-coating process have been studied, the in-depth understanding and effective control of the acceleration rate on two-dimensional perovskite crystallization during spin-coating are still unknown. Here we investigate the effect of solvent evaporation on the microstructure of the final perovskite films during the spin-coating process. The crystallization quality of the film can be significantly improved by controlling solvent evaporation. As a result, the prepared quasi-2D perovskite film exhibits a stimulated emission threshold (pump: 343 nm, 6 kHz, 290 fs) of 550 nm as low as 16.2 μJ/cm<sup>2</sup>. Transient absorption characterization shows that the radiative biexciton recombination time is reduced from 738.5 to 438.3 ps, benefiting from the improved crystallinity. The faster biexciton recombination significantly enhanced the photoluminescence efficiency, which is critical for population inversion. This work could contribute to the development of low-threshold lasers.</p>}}, author = {{Zhao, Kefan and Wang, Yujing and Lin, Kai and Ji, Ting and Shi, Linlin and Zheng, Kaibo and Cui, Yanxia and Li, Guohui}}, issn = {{1944-8244}}, keywords = {{amplified spontaneous emission; biexciton; high crystalline quality; low threshold; perovskite}}, language = {{eng}}, publisher = {{The American Chemical Society (ACS)}}, series = {{ACS Applied Materials and Interfaces}}, title = {{High-Quality Solution-Processed Quasi-2D Perovskite for Low-Threshold Lasers}}, url = {{http://dx.doi.org/10.1021/acsami.4c00308}}, doi = {{10.1021/acsami.4c00308}}, year = {{2024}}, }