Interplay of Photons and Charge Carriers in Thin-Film Devices

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKivisaari, Pyry
dc.contributor.authorPartanen, Mikko
dc.contributor.authorSadi, Toufik
dc.contributor.authorOksanen, Jani
dc.contributor.departmentDepartment of Neuroscience and Biomedical Engineering
dc.contributor.departmentDepartment of Electronics and Nanoengineering
dc.date.accessioned2021-08-25T06:53:35Z
dc.date.available2021-08-25T06:53:35Z
dc.date.issued2021-08
dc.description| openaire: EC/H2020/638173/EU//iTPX | openaire: EC/H2020/846218/EU//DynaLight
dc.description.abstractThin films are gaining ground in photonics and optoelectronics because of promising improvements in their efficiency and functionality, as well as decreased material usage compared with bulk technologies. However, the proliferation of thin films would benefit not only from continuous improvements in their fabrication, but also from a unified and accurate theoretical framework of the interplay of photons and charge carriers. In particular, such a framework would need to account quantitatively and self-consistently for photon recycling and interference effects. To this end, here, we combine the drift-diffusion formalism of charge-carrier dynamics and the fluctuational electrodynamics of photon transport self-consistently using the recently introduced interference-extended radiative-transfer equations. The resulting equation system can be solved numerically using standard simulation tools and, as an example, here, we apply it to study well-known GaAs thin-film solar cells. In addition to obtaining the expected device characteristics, we analyze the underlying complex photon-transport and recombination-generation processes, demonstrating the physical insight provided for unevenly excited structures through the direct and self-consistent description of photons and charge carriers. The methodology proposed here is general and can be used to obtain an accurate physical insight into a wide range of planar optoelectronic devices, of which the thin-film single-junction solar cells studied here are only one example.en
dc.description.versionPeer revieweden
dc.format.extent12
dc.format.mimetypeapplication/pdf
dc.identifier.citationKivisaari , P , Partanen , M , Sadi , T & Oksanen , J 2021 , ' Interplay of Photons and Charge Carriers in Thin-Film Devices ' , Physical Review Applied , vol. 16 , no. 2 , 024036 . https://doi.org/10.1103/PhysRevApplied.16.024036en
dc.identifier.doi10.1103/PhysRevApplied.16.024036
dc.identifier.issn2331-7019
dc.identifier.otherPURE UUID: afc24195-881a-4e85-b713-b1361fe309d9
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/afc24195-881a-4e85-b713-b1361fe309d9
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85114400229&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/66802477/PhysRevApplied.16.024036.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/109167
dc.identifier.urnURN:NBN:fi:aalto-202108258404
dc.language.isoenen
dc.publisherAmerican Physical Society
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/846218/EU//DynaLight
dc.relation.ispartofseriesPhysical Review Applieden
dc.relation.ispartofseriesVolume 16, issue 2en
dc.rightsopenAccessen
dc.titleInterplay of Photons and Charge Carriers in Thin-Film Devicesen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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