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Tellurene Polymorphs: A New Frontier for Solar Harvesting with Strong Exciton Anisotropy and High Optical Absorbance

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Publicado en:Advanced Energy Materials vol. 14, no. 44 (Nov 2024)
Autor principal: Grillo, Simone
Otros Autores: Postorino, Sara, Palummo, Maurizia, Pulci, Olivia
Publicado:
Wiley Subscription Services, Inc.
Materias:
Anisotropy
Infrared analysis
Infrared signatures
Quantum efficiency
Density functional theory
Near infrared radiation
Perturbation theory
Absorbance
Two dimensional analysis
Excitons
Acceso en línea:Citation/Abstract
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Resumen:By using ab initio simulations based on density functional theory and many‐body perturbation theory, a comprehensive analysis of the distinct optical signatures of various tellurene polymorphs and their associated unique anisotropic excitonic characteristics is presented. Despite the atomic thickness of these materials, these findings reveal that their optical absorbance reaches as high as 50% in the near‐infrared and visible range. This investigation highlights the exceptional potential of these 2D semiconducting materials in the development of ultra‐thin and flexible homo‐ and hetero‐junctions for solar light harvesting, achieving photoconversion efficiencies up to 19%, a performance level comparable to current silicon technologies.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.202400674
Fuente:Materials Science Database