Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals
Formamidinium lead bromide （FAPbBr3） nanocrystals （NCs） have been considered to be a good optoelectronic material due to their pure green emission， excellent stability and superior carrier transport characteristics. However， two-photon pumped amplified spontaneous emission （ASE） and the correspondin...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/180677 |
| _version_ | 1826120777446981632 |
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| author | Wang, Yajuan Tay, Eugene Yong Kang Wang, Fang Yu, Sheng Sum, Tze Chien Liu, Wei |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wang, Yajuan Tay, Eugene Yong Kang Wang, Fang Yu, Sheng Sum, Tze Chien Liu, Wei |
| author_sort | Wang, Yajuan |
| collection | NTU |
| description | Formamidinium lead bromide （FAPbBr3） nanocrystals （NCs） have been considered to be a good optoelectronic material due to their pure green emission， excellent stability and superior carrier transport characteristics. However， two-photon pumped amplified spontaneous emission （ASE） and the corresponding nonlinear optical properties of FAPbBr3 NCs are scarcely revealed. Herein， we synthesized colloidal FAPbBr3 NCs with different sizes by changing the molar ratio of FABr/PbBr2 in the precursor solution， using ligand assisted precipitation （LARP） technology at room temperature. Photoluminescence （PL） and time resolved photoluminescence （TRPL） spectroscopy were measured to characterize their ASE properties. And their nonlinear optical properties were studied through the Z-scan technique and the two-photon excited fluorescence method. The stimulated emission properties including one- and two-photon pumped ASE have been realized from FAPbBr3 NCs. With large two-photon absorption coefficient （0.27 cm/GW） and high non-linear absorption cross-section （7.52×105 GM）， ASE with threshold as low as 9.8 μJ/cm2 and 487 μJ/cm2 have been obtained from colloidal FAPbBr3 NCs using one- and two-photon excitations. These results indicate that as a new possible green-emitting frequency-upconversion material with low thresholds， FAPbBr3 NCs hold great potential in the development of high-performance two-photon pump lasers. |
| first_indexed | 2025-03-09T12:48:04Z |
| format | Journal Article |
| id | ntu-10356/180677 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T12:48:04Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1806772024-10-21T15:35:08Z Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals Wang, Yajuan Tay, Eugene Yong Kang Wang, Fang Yu, Sheng Sum, Tze Chien Liu, Wei School of Physical and Mathematical Sciences Physics Perovskites Formamidinium lead bromide nanocrystals Formamidinium lead bromide （FAPbBr3） nanocrystals （NCs） have been considered to be a good optoelectronic material due to their pure green emission， excellent stability and superior carrier transport characteristics. However， two-photon pumped amplified spontaneous emission （ASE） and the corresponding nonlinear optical properties of FAPbBr3 NCs are scarcely revealed. Herein， we synthesized colloidal FAPbBr3 NCs with different sizes by changing the molar ratio of FABr/PbBr2 in the precursor solution， using ligand assisted precipitation （LARP） technology at room temperature. Photoluminescence （PL） and time resolved photoluminescence （TRPL） spectroscopy were measured to characterize their ASE properties. And their nonlinear optical properties were studied through the Z-scan technique and the two-photon excited fluorescence method. The stimulated emission properties including one- and two-photon pumped ASE have been realized from FAPbBr3 NCs. With large two-photon absorption coefficient （0.27 cm/GW） and high non-linear absorption cross-section （7.52×105 GM）， ASE with threshold as low as 9.8 μJ/cm2 and 487 μJ/cm2 have been obtained from colloidal FAPbBr3 NCs using one- and two-photon excitations. These results indicate that as a new possible green-emitting frequency-upconversion material with low thresholds， FAPbBr3 NCs hold great potential in the development of high-performance two-photon pump lasers. Published version 2024-10-21T00:26:02Z 2024-10-21T00:26:02Z 2024 Journal Article Wang, Y., Tay, E. Y. K., Wang, F., Yu, S., Sum, T. C. & Liu, W. (2024). Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals. Chinese Journal of Luminescence, 45(8), 1281-1291. https://dx.doi.org/10.37188/CJL.20240110 1000-7032 https://hdl.handle.net/10356/180677 10.37188/CJL.20240110 8 45 1281 1291 en Chinese Journal of Luminescence © 2024 Editorial Office of Chinese Journal of Luminescence. All rights reserved. This article may be downloaded for personal use only. Any other use requires prior permission of the copyright holder. The Version of Record is available online at http://doi.org/10. 37188/CJL. 20240110. application/pdf |
| spellingShingle | Physics Perovskites Formamidinium lead bromide nanocrystals Wang, Yajuan Tay, Eugene Yong Kang Wang, Fang Yu, Sheng Sum, Tze Chien Liu, Wei Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals |
| title | Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals |
| title_full | Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals |
| title_fullStr | Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals |
| title_full_unstemmed | Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals |
| title_short | Nonlinear absorption and low-threshold two-photon pumped amplified stimulated emission from FAPbBr3 nanocrystals |
| title_sort | nonlinear absorption and low threshold two photon pumped amplified stimulated emission from fapbbr3 nanocrystals |
| topic | Physics Perovskites Formamidinium lead bromide nanocrystals |
| url | https://hdl.handle.net/10356/180677 |
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