Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory
Formamidinium lead bromide (FAPbBr₃) perovskites are promising candidates for optoelectronic applications owing to their exceptional semiconducting and photoluminescent properties. However, their high sensitivity to environmental factors like moisture and polar solvents limits their long-term stabil...
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The Royal Society
2025-02-01
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.241067 |
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| author | Debasis Brahma Jit Satra Sayan Basak Subhadeep Chakraborty Rahul Chatterjee Suman Acharya Debdipta Basu Abhijit Bandyopadhyay |
| author_facet | Debasis Brahma Jit Satra Sayan Basak Subhadeep Chakraborty Rahul Chatterjee Suman Acharya Debdipta Basu Abhijit Bandyopadhyay |
| author_sort | Debasis Brahma |
| collection | DOAJ |
| description | Formamidinium lead bromide (FAPbBr₃) perovskites are promising candidates for optoelectronic applications owing to their exceptional semiconducting and photoluminescent properties. However, their high sensitivity to environmental factors like moisture and polar solvents limits their long-term stability, posing a barrier to commercial applications. This study addresses this stability challenge by encapsulating FAPbBr₃ in poly(3-bromothiophene) (PTBr), a high molecular-weight-conducting polymer, to enhance resistance to aqueous and solvent-based degradation. The PTBr encapsulation was found to significantly improve the thermal and environmental stability of FAPbBr₃, as evidenced by thermogravimetric analysis, which revealed a reduced and delayed mass loss and an increased residual mass (up to 28.17% in composites with 70% PTBr content). Photoluminescence studies demonstrated that the encapsulated composites exhibited a mean fluorescence lifetime of 87.4 ns, compared with 12.56% fluorescence retention in unencapsulated FAPbBr₃ after exposure to moisture for 45 days. Moreover, encapsulated FAPbBr₃ retained over 80% of its green light fluorescence intensity even after 1 year, whereas the unencapsulated sample degraded to less than 5%. Notably, the composites displayed fluorescence recovery upon exposure to polar solvents, further highlighting PTBr’s protective role. These findings provide a practical, non-interacting encapsulation strategy that enhances both the environmental and thermal stability of FAPbBr₃ while preserving its emission characteristics, offering potential to support the further development of perovskite-based optoelectronic devices for practical applications. |
| format | Article |
| id | doaj-art-6606e499c8ac4514abc8a20b1c9668d1 |
| institution | Kabale University |
| issn | 2054-5703 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj-art-6606e499c8ac4514abc8a20b1c9668d12025-02-05T00:05:15ZengThe Royal SocietyRoyal Society Open Science2054-57032025-02-0112210.1098/rsos.241067Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memoryDebasis Brahma0Jit Satra1Sayan Basak2Subhadeep Chakraborty3Rahul Chatterjee4Suman Acharya5Debdipta Basu6Abhijit Bandyopadhyay7Department of Polymer Science and Technology, University of Calcutta, 92 A.P.C Road, Kolkata 700009, IndiaIndian Institute of Engineering Science and Technology, Botanical Garden Area, Howrah, West Bengal 711103, IndiaDepartment of Polymer Science and Technology, University of Calcutta, 92 A.P.C Road, Kolkata 700009, IndiaDepartment of Polymer Science and Technology, University of Calcutta, 92 A.P.C Road, Kolkata 700009, IndiaDepartment of Polymer Science and Technology, University of Calcutta, 92 A.P.C Road, Kolkata 700009, IndiaIndian Rubber Materials Research Institute, East Centre, Rubber Park, PO- Dhulagarh, P.S-Sankrail, Howrah, West Bengal 711302, IndiaIndian Rubber Materials Research Institute, East Centre, Rubber Park, PO- Dhulagarh, P.S-Sankrail, Howrah, West Bengal 711302, IndiaDepartment of Polymer Science and Technology, University of Calcutta, 92 A.P.C Road, Kolkata 700009, IndiaFormamidinium lead bromide (FAPbBr₃) perovskites are promising candidates for optoelectronic applications owing to their exceptional semiconducting and photoluminescent properties. However, their high sensitivity to environmental factors like moisture and polar solvents limits their long-term stability, posing a barrier to commercial applications. This study addresses this stability challenge by encapsulating FAPbBr₃ in poly(3-bromothiophene) (PTBr), a high molecular-weight-conducting polymer, to enhance resistance to aqueous and solvent-based degradation. The PTBr encapsulation was found to significantly improve the thermal and environmental stability of FAPbBr₃, as evidenced by thermogravimetric analysis, which revealed a reduced and delayed mass loss and an increased residual mass (up to 28.17% in composites with 70% PTBr content). Photoluminescence studies demonstrated that the encapsulated composites exhibited a mean fluorescence lifetime of 87.4 ns, compared with 12.56% fluorescence retention in unencapsulated FAPbBr₃ after exposure to moisture for 45 days. Moreover, encapsulated FAPbBr₃ retained over 80% of its green light fluorescence intensity even after 1 year, whereas the unencapsulated sample degraded to less than 5%. Notably, the composites displayed fluorescence recovery upon exposure to polar solvents, further highlighting PTBr’s protective role. These findings provide a practical, non-interacting encapsulation strategy that enhances both the environmental and thermal stability of FAPbBr₃ while preserving its emission characteristics, offering potential to support the further development of perovskite-based optoelectronic devices for practical applications.https://royalsocietypublishing.org/doi/10.1098/rsos.241067perovskiteFAPbBr3encapsulationstability enhancementpoly(3-bromo thiophene)fluorescence |
| spellingShingle | Debasis Brahma Jit Satra Sayan Basak Subhadeep Chakraborty Rahul Chatterjee Suman Acharya Debdipta Basu Abhijit Bandyopadhyay Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory Royal Society Open Science perovskite FAPbBr3 encapsulation stability enhancement poly(3-bromo thiophene) fluorescence |
| title | Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory |
| title_full | Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory |
| title_fullStr | Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory |
| title_full_unstemmed | Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory |
| title_short | Investigating the encapsulation of lead bromide perovskite with poly(3-bromothiophene) for improved aqua stability and enhanced fluorescence memory |
| title_sort | investigating the encapsulation of lead bromide perovskite with poly 3 bromothiophene for improved aqua stability and enhanced fluorescence memory |
| topic | perovskite FAPbBr3 encapsulation stability enhancement poly(3-bromo thiophene) fluorescence |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.241067 |
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