Oriented for efficiency: Textured Se thin films fabricated by vapor transport deposition for emerging photovoltaic applications
This work presents a low-temperature vapor transport deposition method to synthesize Se thin films, enabling a precise control over thickness and crystallographic texture. Using a combinatorial synthesis approach, the authors demonstrate a direct correlation between annealing temperature and preferr...
| Autores: | , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/449563 |
| Acceso en línea: | https://hdl.handle.net/2117/449563 https://dx.doi.org/10.1002/aesr.202500189 |
| Access Level: | acceso abierto |
| Palabra clave: | Àrees temàtiques de la UPC::Energies |
| Sumario: | This work presents a low-temperature vapor transport deposition method to synthesize Se thin films, enabling a precise control over thickness and crystallographic texture. Using a combinatorial synthesis approach, the authors demonstrate a direct correlation between annealing temperature and preferred crystalline orientation, which significantly influences device performance. Films with a strong vertical alignment exhibit reduced Urbach energy and subgap absorption, as well as enhanced optoelectronic properties, resulting in power conversion efficiencies exceeding 4% under AM1.5¿G, and up to 10% under indoor illumination, with an excellent fill factor stability and reduced recombination losses. This study highlights the critical role of texture control in determining the optoelectronic quality of anisotropic chalcogenide solar cells and provides an effective strategy for tuning the morphology, crystalline orientation, and optical characteristics of Se thin films. |
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