Solution-phase synthesis and photoluminescence of quaternary chalcohalide semiconductors
Mixed-metal chalcohalide semiconductors have emerged as promising candidates for photovoltaic applications. However, preparation of these multinary compounds using solution-phase techniques remains particularly challenging compared to traditional solid-state methods. To fully harness their potential...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:274565 |
| Acceso en línea: | https://ddd.uab.cat/record/274565 https://dx.doi.org/urn:doi:10.1021/acs.chemmater.3c00011 |
| Access Level: | acceso abierto |
| Palabra clave: | Chalcohalides Quaternary semiconductors Solution synthesis Photoluminescence Fine tuning Mixed-metals Phase purity Photovoltaic applications Reaction parameters Rod-like morphology Solid state method Solution phase Solution phase synthesis Synthetic methods |
| Sumario: | Mixed-metal chalcohalide semiconductors have emerged as promising candidates for photovoltaic applications. However, preparation of these multinary compounds using solution-phase techniques remains particularly challenging compared to traditional solid-state methods. To fully harness their potential, it is desirable to develop synthetic methods that enable control over both the phase purity and dimensionality of chalcohalides. Here, we report the solution-phase synthesis of PbSbSI and PbBiSI quaternary chalcohalides using readily available precursors. Fine tuning of reaction parameters allows for the isolation of rod-like morphologies with tunable diameters and aspect ratios. The quaternary chalcohalides display photoluminescence as an ensemble as well as at the single particle level, as demonstrated using fluorescence microscopy. We further evaluate the relative stability and band gap of PbSbSI polymorphs and their coloring patterns using electronic structure calculations. The synthetic methods developed here will motivate the study of ever more complex chalcohalides and other multinary semiconductors for new technological applications. |
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