CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance
The development of near infra-red (NIR) emitting down-converters is a promising route for improving photovoltaic output through efficient light management. Quantum-cutting Yb3+-doped CsPbCl3 nanocrystals (NCs) are interesting for this application due to their high photoluminescence quantum yields (P...
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Elsevier
2025-05-01
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| Series: | Optical Materials: X |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590147825000099 |
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| author | Mathis Van de Voorde Damien Hudry Dmitry Busko Bryce S. Richards Rebecca Saive |
| author_facet | Mathis Van de Voorde Damien Hudry Dmitry Busko Bryce S. Richards Rebecca Saive |
| author_sort | Mathis Van de Voorde |
| collection | DOAJ |
| description | The development of near infra-red (NIR) emitting down-converters is a promising route for improving photovoltaic output through efficient light management. Quantum-cutting Yb3+-doped CsPbCl3 nanocrystals (NCs) are interesting for this application due to their high photoluminescence quantum yields (PLQY >100 %) and attractive NIR spectral properties which include high absorption cross section and minimal overlap between absorption and emission spectra. In this work, we fabricated CsPbCl3:Yb3+ NCs with the hot-injection method and studied them using structural/optical characterization methods such as x-ray diffraction, scanning transmission electron microscopy, energy-dispersive x-ray spectroscopy, fluorescence lifetime and quantum yield measurements. We found that the hot-injection method is susceptible to the formation of colloidally stable Yb-rich reaction by-products. After separating these by-products from the NCs, NIR PLQY increased by a relative 46 %. Although the PLQY values recorded in this study are 4–7 times lower than in other studies, these findings may explain some discrepancies in photoluminescence efficiency reported with this material. |
| format | Article |
| id | doaj-art-656d7dfefe084fd6a1d31f03646ab75f |
| institution | OA Journals |
| issn | 2590-1478 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Optical Materials: X |
| spelling | doaj-art-656d7dfefe084fd6a1d31f03646ab75f2025-08-20T02:35:44ZengElsevierOptical Materials: X2590-14782025-05-012610040710.1016/j.omx.2025.100407CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performanceMathis Van de Voorde0Damien Hudry1Dmitry Busko2Bryce S. Richards3Rebecca Saive4University of Twente, Enschede, 7522NB, the Netherlands; Institute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany; Corresponding author. University of Twente, Enschede, 7522NB, the Netherlands.Institute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, GermanyInstitute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany; Light Technology Institute, Karlsruhe Institute of Technology, Karlsruhe, GermanyUniversity of Twente, Enschede, 7522NB, the NetherlandsThe development of near infra-red (NIR) emitting down-converters is a promising route for improving photovoltaic output through efficient light management. Quantum-cutting Yb3+-doped CsPbCl3 nanocrystals (NCs) are interesting for this application due to their high photoluminescence quantum yields (PLQY >100 %) and attractive NIR spectral properties which include high absorption cross section and minimal overlap between absorption and emission spectra. In this work, we fabricated CsPbCl3:Yb3+ NCs with the hot-injection method and studied them using structural/optical characterization methods such as x-ray diffraction, scanning transmission electron microscopy, energy-dispersive x-ray spectroscopy, fluorescence lifetime and quantum yield measurements. We found that the hot-injection method is susceptible to the formation of colloidally stable Yb-rich reaction by-products. After separating these by-products from the NCs, NIR PLQY increased by a relative 46 %. Although the PLQY values recorded in this study are 4–7 times lower than in other studies, these findings may explain some discrepancies in photoluminescence efficiency reported with this material.http://www.sciencedirect.com/science/article/pii/S2590147825000099Quantum-cuttingDown-conversionLead halide perovskite nanocrystalsNear infra-red emissionEnergy transferLanthanides |
| spellingShingle | Mathis Van de Voorde Damien Hudry Dmitry Busko Bryce S. Richards Rebecca Saive CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance Optical Materials: X Quantum-cutting Down-conversion Lead halide perovskite nanocrystals Near infra-red emission Energy transfer Lanthanides |
| title | CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance |
| title_full | CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance |
| title_fullStr | CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance |
| title_full_unstemmed | CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance |
| title_short | CsPbCl3:Yb3+ nanocrystals: Adverse effects of colloidally stable ytterbium-rich reaction by-products on luminescent down-conversion performance |
| title_sort | cspbcl3 yb3 nanocrystals adverse effects of colloidally stable ytterbium rich reaction by products on luminescent down conversion performance |
| topic | Quantum-cutting Down-conversion Lead halide perovskite nanocrystals Near infra-red emission Energy transfer Lanthanides |
| url | http://www.sciencedirect.com/science/article/pii/S2590147825000099 |
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