Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass
For the first time, the synthesis, luminescent and structural properties of stable perovskite-type (Cs<sub>1−x</sub>Rb<sub>x</sub>)<sub>4</sub>PbBr<sub>6</sub> (R = Cs, Rb) nanocrystals are shown. In the absence of rubidium, Cs<sub>4</sub>P...
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MDPI AG
2023-06-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/7/729 |
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| author | Damir Valiev Rufina Kharisova Anastasiia Babkina Ksenia Zyryanova Natalia Kuzmenko Yevgeniy Sgibnev Artem Shelaev Alexander V. Baryshev |
| author_facet | Damir Valiev Rufina Kharisova Anastasiia Babkina Ksenia Zyryanova Natalia Kuzmenko Yevgeniy Sgibnev Artem Shelaev Alexander V. Baryshev |
| author_sort | Damir Valiev |
| collection | DOAJ |
| description | For the first time, the synthesis, luminescent and structural properties of stable perovskite-type (Cs<sub>1−x</sub>Rb<sub>x</sub>)<sub>4</sub>PbBr<sub>6</sub> (R = Cs, Rb) nanocrystals are shown. In the absence of rubidium, Cs<sub>4</sub>PbBr<sub>6</sub> and CsPbBr<sub>3</sub> perovskite crystals precipitate in the ZnO–Na<sub>2</sub>O–B<sub>2</sub>O<sub>3</sub>–GeO<sub>2</sub> glass matrix. With ascending rubidium content, the precipitation of (Cs,Rb)<sub>4</sub>PbBr<sub>6</sub> nanocrystals is replaced by the Rb<sub>4</sub>PbBr<sub>6</sub> nanocrystals nucleation. Nucleated nanocrystals exhibit an intense green luminescence. With an increase of the rubidium content, the luminescence maximum shifts to the blue region, the luminescence quantum yield increases from 28 to 51%, and the average decay time increases from 2 to 8 ns. Several assumptions have been made about the nature of the green luminescence of perovskite-like Cs<sub>4</sub>PbBr<sub>6</sub> and (Cs,Rb)<sub>4</sub>PbBr<sub>6</sub> crystals in glasses. It is concluded that the most probable cause is the impurity inclusions of CsPbBr<sub>3</sub> and (Cs,Rb)PbBr<sub>3</sub> crystals. |
| first_indexed | 2024-03-11T00:43:45Z |
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| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T00:43:45Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
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| series | Photonics |
| spelling | doaj.art-34ac5a5e818342b4b005f8a45eaca5892023-11-18T20:57:21ZengMDPI AGPhotonics2304-67322023-06-0110772910.3390/photonics10070729Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate GlassDamir Valiev0Rufina Kharisova1Anastasiia Babkina2Ksenia Zyryanova3Natalia Kuzmenko4Yevgeniy Sgibnev5Artem Shelaev6Alexander V. Baryshev7School of Advanced Manufacturing Technology, National Research Tomsk Polytechnic University, Lenin Avenue 30, 634050 Tomsk, RussiaResearch Center for Optical Material Engineering, ITMO University, Kronverksky Avenue 49, 197101 Saint-Petersburg, RussiaResearch Center for Optical Material Engineering, ITMO University, Kronverksky Avenue 49, 197101 Saint-Petersburg, RussiaResearch Center for Optical Material Engineering, ITMO University, Kronverksky Avenue 49, 197101 Saint-Petersburg, RussiaResearch Center for Optical Material Engineering, ITMO University, Kronverksky Avenue 49, 197101 Saint-Petersburg, RussiaDukhov Automatics Research Institute (VNIIA), Sushchevskaya Street, 22, 127055 Moscow, RussiaDukhov Automatics Research Institute (VNIIA), Sushchevskaya Street, 22, 127055 Moscow, RussiaDukhov Automatics Research Institute (VNIIA), Sushchevskaya Street, 22, 127055 Moscow, RussiaFor the first time, the synthesis, luminescent and structural properties of stable perovskite-type (Cs<sub>1−x</sub>Rb<sub>x</sub>)<sub>4</sub>PbBr<sub>6</sub> (R = Cs, Rb) nanocrystals are shown. In the absence of rubidium, Cs<sub>4</sub>PbBr<sub>6</sub> and CsPbBr<sub>3</sub> perovskite crystals precipitate in the ZnO–Na<sub>2</sub>O–B<sub>2</sub>O<sub>3</sub>–GeO<sub>2</sub> glass matrix. With ascending rubidium content, the precipitation of (Cs,Rb)<sub>4</sub>PbBr<sub>6</sub> nanocrystals is replaced by the Rb<sub>4</sub>PbBr<sub>6</sub> nanocrystals nucleation. Nucleated nanocrystals exhibit an intense green luminescence. With an increase of the rubidium content, the luminescence maximum shifts to the blue region, the luminescence quantum yield increases from 28 to 51%, and the average decay time increases from 2 to 8 ns. Several assumptions have been made about the nature of the green luminescence of perovskite-like Cs<sub>4</sub>PbBr<sub>6</sub> and (Cs,Rb)<sub>4</sub>PbBr<sub>6</sub> crystals in glasses. It is concluded that the most probable cause is the impurity inclusions of CsPbBr<sub>3</sub> and (Cs,Rb)PbBr<sub>3</sub> crystals.https://www.mdpi.com/2304-6732/10/7/729perovskite quantum dotscesium lead bromide perovskiteRb-dopingCs<sub>4</sub>PbBr<sub>6</sub> quantum dotsborogermanate glass |
| spellingShingle | Damir Valiev Rufina Kharisova Anastasiia Babkina Ksenia Zyryanova Natalia Kuzmenko Yevgeniy Sgibnev Artem Shelaev Alexander V. Baryshev Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass Photonics perovskite quantum dots cesium lead bromide perovskite Rb-doping Cs<sub>4</sub>PbBr<sub>6</sub> quantum dots borogermanate glass |
| title | Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass |
| title_full | Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass |
| title_fullStr | Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass |
| title_full_unstemmed | Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass |
| title_short | Highly Luminescent Rb-Doped Cs<sub>4</sub>PbBr<sub>6</sub> Nanocrystals in Borogermanate Glass |
| title_sort | highly luminescent rb doped cs sub 4 sub pbbr sub 6 sub nanocrystals in borogermanate glass |
| topic | perovskite quantum dots cesium lead bromide perovskite Rb-doping Cs<sub>4</sub>PbBr<sub>6</sub> quantum dots borogermanate glass |
| url | https://www.mdpi.com/2304-6732/10/7/729 |
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