Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance
In this study, low-dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> super-nanowire (SNW) structures were synthesized via a one-pot heating strategy for highly blue emissions. By introducing CoBr<sub>2</sub> to CsPbBr<sub>3</sub> precursors, the shape of...
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MDPI AG
2021-12-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/11/12/1564 |
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| author | Xuan-Viet Pham Ba-Duc Tran Duy-Cuong Nguyen Tu Nguyen Minh-Vuong Nguyen Cao-Ngoc-Hong Nguyen Thanh-Tung Duong |
| author_facet | Xuan-Viet Pham Ba-Duc Tran Duy-Cuong Nguyen Tu Nguyen Minh-Vuong Nguyen Cao-Ngoc-Hong Nguyen Thanh-Tung Duong |
| author_sort | Xuan-Viet Pham |
| collection | DOAJ |
| description | In this study, low-dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> super-nanowire (SNW) structures were synthesized via a one-pot heating strategy for highly blue emissions. By introducing CoBr<sub>2</sub> to CsPbBr<sub>3</sub> precursors, the shape of perovskite nanocrystals was changed from cuboids to a super-nanowire structure, as revealed through a transmission electron microscope. SNWs were formed from stacked segments of nano-plates (lateral dimension of 10–12 nm and thickness of ~2.5 nm) with lengths of several microns. The fabricated sample absorbs light at a wavelength of <450 nm, and it is emitted at a wavelength of 475 nm. It also has a radiant flux conversion efficiency of up to 85% when stimulated by a 430 nm LED light source. The average decay time of up to 80 µs indicates that they effectively prevent the recombination of electron–hole pair. The optical performance still remains over 65% when the ambient temperature is up to 120 °C compared with that under room temperature. The excellent color purity, optical quantum efficiency, long carrier lifetime, and thermal stability make CsPbBr<sub>3</sub>@CoBr<sub>2</sub> SNWs highly promising for a range of photolumicescence applications, such as a high color rendering index lighting and transparent blue emissive screen. |
| first_indexed | 2024-03-10T04:20:45Z |
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| id | doaj.art-38d4f6b7dca14e60a4adfb34ddbcb952 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T04:20:45Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-38d4f6b7dca14e60a4adfb34ddbcb9522023-11-23T07:49:27ZengMDPI AGCrystals2073-43522021-12-011112156410.3390/cryst11121564Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive PerformanceXuan-Viet Pham0Ba-Duc Tran1Duy-Cuong Nguyen2Tu Nguyen3Minh-Vuong Nguyen4Cao-Ngoc-Hong Nguyen5Thanh-Tung Duong6Advanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology (HUST), 01 Dai Co Viet Street, Hanoi 10000, VietnamAdvanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology (HUST), 01 Dai Co Viet Street, Hanoi 10000, VietnamAdvanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology (HUST), 01 Dai Co Viet Street, Hanoi 10000, VietnamFaculty of Fundamental Science, Phenikaa University, Yen Nghia, Ha-Dong District, Hanoi 10000, VietnamDepartment of Physics and Materials Science, Quy Nhon University, Quy Nhon 55000, VietnamDepartment of Physics and Materials Science, Quy Nhon University, Quy Nhon 55000, VietnamAdvanced Institute for Science and Technology (AIST), Hanoi University of Science and Technology (HUST), 01 Dai Co Viet Street, Hanoi 10000, VietnamIn this study, low-dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> super-nanowire (SNW) structures were synthesized via a one-pot heating strategy for highly blue emissions. By introducing CoBr<sub>2</sub> to CsPbBr<sub>3</sub> precursors, the shape of perovskite nanocrystals was changed from cuboids to a super-nanowire structure, as revealed through a transmission electron microscope. SNWs were formed from stacked segments of nano-plates (lateral dimension of 10–12 nm and thickness of ~2.5 nm) with lengths of several microns. The fabricated sample absorbs light at a wavelength of <450 nm, and it is emitted at a wavelength of 475 nm. It also has a radiant flux conversion efficiency of up to 85% when stimulated by a 430 nm LED light source. The average decay time of up to 80 µs indicates that they effectively prevent the recombination of electron–hole pair. The optical performance still remains over 65% when the ambient temperature is up to 120 °C compared with that under room temperature. The excellent color purity, optical quantum efficiency, long carrier lifetime, and thermal stability make CsPbBr<sub>3</sub>@CoBr<sub>2</sub> SNWs highly promising for a range of photolumicescence applications, such as a high color rendering index lighting and transparent blue emissive screen.https://www.mdpi.com/2073-4352/11/12/1564perovskite/PMMA compositeblue emissiontransparent emissive screenhigh color rendering index (CRI) lighting |
| spellingShingle | Xuan-Viet Pham Ba-Duc Tran Duy-Cuong Nguyen Tu Nguyen Minh-Vuong Nguyen Cao-Ngoc-Hong Nguyen Thanh-Tung Duong Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance Crystals perovskite/PMMA composite blue emission transparent emissive screen high color rendering index (CRI) lighting |
| title | Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance |
| title_full | Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance |
| title_fullStr | Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance |
| title_full_unstemmed | Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance |
| title_short | Low-Dimensional CsPbBr<sub>3</sub>@CoBr<sub>2</sub> Super-Nanowire Structure for Perovskite/PMMA Composite with Highly Blue Emissive Performance |
| title_sort | low dimensional cspbbr sub 3 sub cobr sub 2 sub super nanowire structure for perovskite pmma composite with highly blue emissive performance |
| topic | perovskite/PMMA composite blue emission transparent emissive screen high color rendering index (CRI) lighting |
| url | https://www.mdpi.com/2073-4352/11/12/1564 |
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