Solar spectral conversion based on plastic films of lanthanide-doped ionosilicas for photovoltaics:Down-shifting layers and luminescent solar concentrators

作     者：M.A.Cardoso S.F.H.Correia A.R.Frias H.M.R.Goncalves R.F.P.Pereira S.C.Nunes M.Armand P.S.André V.de Zea Bermudez R.A.S.Ferreira M.A.Cardoso;S.F.H.Correia;A.R.Frias;H.M.R.Gon?alves;R.F.P.Pereira;S.C.Nunes;M.Armand;P.S.André;V.de Zea Bermudez;R.A.S.Ferreira

作者机构：Department of Physics and CICECO-Aveiro Institute of MaterialsUniversity of Aveiro3810-193AveiroPortugal Department of Chemistry and CQ-VRUniversity of Tras-os-Montes e Alto Douro5000-801Vila RealPortugal Instituto de TelecomunicacoesUniversity of Aveiro3810-193AveiroPortugal REQUIMTEInstituto Superior de Engenharia do Porto4200-072PortoPortugal Chemistry Centre and Chemistry DepartmentUniversity of Minho4710-057BragaPortugal CICS-Health Sciences Research Center and Chemistry DepartmentUniversity of Beira Interior6201-001CovilhaPortugal Electrical Energy Storage DepartmentCIC EnergiguneParque Tecnologico de AlavaMinano01510Spain Department of Electrical and Computer EngineeringInstituto de TelecomunicacoesInstituto Superior TecnicoUniversidade de Lisboa1049-001LisbonPortugal 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2020年第38卷第5期

页      面：531-538页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project supported by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership in the frame of Operational Competitiveness and Internationalization Programme(projects UIDB/50011/2020&UIDP/50011/2020 UID/EEA/50008/2020 UID/QUI/50006/2019 CENTRO-01-0145-FEDER-030186 CENTRO-01-0145-FEDER-000005 Pest-OE/QUI/UI0616/2014 POCI-01-0145-FEDER-016884 PTDC/CTM-NAN/0956/2014 UID/QUI/00686/2016 UID/QUI/00686/2018 UID/QUI/00686/2019 and NORTE-01-0145-FEDER-030858) 

主　　题：Ionosilicas Lanthanides Photovoltaics Luminescent solar concentrators Down-shifting layers Silicon photovoltaic cells 

摘      要：The mismatch between the photovoltaic(PV)cells absorption and the solar irradiance on earth is one of the major limitations towards more efficient PV energy *** aspect was addressed by downshifting the solar irradiance on Earth through luminescent down-shifting layers based on lanthanidedoped surface-functionalized ionosilicas(ISs)embedded in poly(methyl methacrylate)(PMMA)coated on the surface of commercial Si-based PV *** IS-PMMA hybrid materials exhibit efficient solar radiation harvesting(spectral overlap of^9.5×10^19 photons/(s·m2))and conversion(quantum yield^52%).The direct solar radiation and the down-shifted radiation are partially guided and lost through total internal reflection to the layer edges being unavailable for PV conversion of the coated PV *** tuning the down-shifting layer thickness,it also acts as luminescent solar concentrator enabling the collection of the guided radiation by flexible PV cells applied on the borders of the down-shifting layer leading to an enhancement of the PV energy conversion from^5%(in the case of the single-use of the luminescent down-shifting layer)to^13%comparing with the bare PV *** overall electrical output of the device resulted in an absolute external quantum efficiency increase of^32%for the optimized Eu^3+-based films in the UV spectral region(compared with the bare PV device,which is among the best values reported so far).