Recent advances in silicon-based nanostructures for thermoelectric applications
In this work, implementations of silicon-based thermoelectric nanomaterials are reviewed. Approaches ranging from nanostructured bulk - i.e., macroscopic materials presenting nanoscale features - to more complex low-dimensional materials are covered. These implementations take advantage of different...
| Authors: | , , , , , |
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| Format: | article |
| Status: | Published version |
| Publication Date: | 2023 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/347663 |
| Online Access: | http://hdl.handle.net/10261/347663 https://api.elsevier.com/content/abstract/scopus_id/85153797797 |
| Access Level: | Open access |
| Keyword: | Films Nanostructures Silicon Electronic band structure Low-dimensional materials Macroscopic materials Nanoscale features Nanostructured materials |
| Summary: | In this work, implementations of silicon-based thermoelectric nanomaterials are reviewed. Approaches ranging from nanostructured bulk - i.e., macroscopic materials presenting nanoscale features - to more complex low-dimensional materials are covered. These implementations take advantage of different phonon scattering mechanisms and eventual modifications of the electronic band-structure for the enhancement of the thermoelectric figure of merit. This work is focused on the recent advances in silicon and silicon-based thermoelectric nanomaterials of the last decade - at both the theoretical and experimental level - with the spotlight on the most recent works. Different nanostructures and their fabrication methods are detailed, while the thermoelectric performances and the feasibility of their integration into functional micro-harvester generators are compared and discussed. This Research Update first covers the advances in nanostructured bulk, such as nanometric-sized polycrystals or defect-induced materials. Subsequently, it reviews low-dimensional materials, namely, thin films and nanowires. Later, other complex structures based on nanoporosity, superlattices, or core-shell schemes are detailed. Finally, it is devoted to present examples of the successful implementation of nanostructured silicon into functional thermoelectric devices. |
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