Academic Journal
Preparation of Ultrastable and Highly Luminescent CsPbBr 3 Quantum Dots by a Synergistic Internal and External Strategy of Ligand Modification and Silica Coating
| العنوان: | Preparation of Ultrastable and Highly Luminescent CsPbBr 3 Quantum Dots by a Synergistic Internal and External Strategy of Ligand Modification and Silica Coating |
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| المؤلفون: | Xiaoling Guo, Huidong Xie, Wentao Cai, Fu Wang, Bing Xu, Chang Yang |
| سنة النشر: | 1753 |
| مصطلحات موضوعية: | Biophysics, Medicine, Biotechnology, Environmental Sciences not elsewhere classified, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, Physical Sciences not elsewhere classified, solar cells due, prepare qd solutions, excellent optoelectronic properties, dual protection effect, also high efficiency, conventional organic acid, 2 +, 2 , sup >–, poor environmental stability, perovskite quantum dots, highly luminescent cspbbr, first introducing 4, external synergistic strategy, 3 , quantum dots, external strategy, sulfamoylbenzoic acid, widely used, uncoordinated pb, triethoxysilane hydrolysis, synthesis process, synergistic internal |
| الوصف: | Inorganic metal halide CsPbX 3 (X = Cl, Br, and I) perovskite quantum dots (QDs) are widely used in light-emitting diodes, photodetectors, and solar cells due to their excellent optoelectronic properties. Their disadvantage is poor environmental stability, which can be improved to some extent by dynamic bonding of conventional organic acid/amine ligands to the surface of QDs. Here, we adopt an internal and external synergistic strategy by first introducing 4-sulfamoylbenzoic acid (4-SABA) during the synthesis process, which effectively modifies the uncoordinated Pb 2+ and Br – vacancies on the surface of QDs. Second, a layered SiO 2 substrate was generated by (3-aminopropyl) triethoxysilane hydrolysis to encapsulate the QDs, which finally achieved the dual protection effect of surface passivation and inorganic coating of the QDs. Results showed that the as-prepared 4-SABA-CsPbBr 3 /SiO 2 composites had a higher photoluminescence quantum yield (96%) and far more stability to water and ethanol than the oleic acid-/oleylamine-passivated QDs. This paper provides an effective way to prepare QD solutions with not only low cost but also high efficiency. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| Relation: | https://figshare.com/articles/journal_contribution/Preparation_of_Ultrastable_and_Highly_Luminescent_CsPbBr_sub_3_sub_Quantum_Dots_by_a_Synergistic_Internal_and_External_Strategy_of_Ligand_Modification_and_Silica_Coating/24514241 |
| DOI: | 10.1021/acs.jpcc.3c05055.s001 |
| الاتاحة: | https://doi.org/10.1021/acs.jpcc.3c05055.s001 https://figshare.com/articles/journal_contribution/Preparation_of_Ultrastable_and_Highly_Luminescent_CsPbBr_sub_3_sub_Quantum_Dots_by_a_Synergistic_Internal_and_External_Strategy_of_Ligand_Modification_and_Silica_Coating/24514241 |
| Rights: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.8EAA8B5C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.jpcc.3c05055.s001 |
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