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Author(s): Martins, M.
Seyedali Emami
Madureira, R.
Joaquim Gabriel Magalhães Mendes
Ivanou, D.
Adélio Mendes
Title: Novel laser-assisted glass frit encapsulation for long-lifetime perovskite solar cells
Issue Date: 2020-10-14
Abstract: Hermetic encapsulation protects perovskite solar cells (PSCs) from degradations induced by humidity and oxygen. A novel dual laser beam glass frit sealing process is developed and optimized to hermetically encapsulate PSCs. A 3D transient phenomenological model of the laser-assisted encapsulation is developed, validated and used to optimize the glass sealing procedure. During the laser-sealing process, the cells are subjected to 65 +/- 5 degrees C for a short time of <60 s. This extremely low process temperature glass sealing procedure is applied to encapsulate n-i-p PSCs fabricated with a poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) hole transport layer (HTL). The long-term stability of the encapsulated PSCs is examined under elevated humidity conditions and by thermal cycling tests. No performance variations after 500 h of humidity aging at 85% RH and 50 thermal cycles of -40 degrees C to 65 degrees C are observed. Though a 16% PCE loss is observed after thermal cycles between -40 degrees C and 85 degrees C, XRD analysis revealed no perovskite decomposition and the performance losses are assigned to the thermal degradation of the HTL material. A hermetic encapsulation is a critical step for the transition of PSCs from the laboratory to the market and this glass encapsulation ensures a successful path towards the commercialization of these emerging PV devices.
Subject: Engenharia química
Chemical engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia química
Engineering and technology::Chemical engineering
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/UIDB/00511/2020_UIDP/00511/2020/Financiamento Plurianual 2020-2023 da Unidade de I&D LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia/LEPABE
info:eu-repo/grantAgreement/Agência Nacional de Inovação S.A./P2020|COMPETE - Projetos em Copromoção/POCI-01-0247-FEDER-017796/Novos avanços tecnológicos para a terceira geração de células solares sensibilizadas com perovskita/WINPSC
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/P2020|COMPETE -Programa de Ações Conjuntas/SAICTPAC/0046/2015 - POCI-01-0145-FEDER-016387/Recolha e armazenamento de energia solar/SunStorage
info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e a Tecnologia/P2020|COMPETE - Projetos em Todos os Domínios Científicos/POCI-01-0145-FEDER-030510/Armazenamento de energia solar em baterias redox de caudal/SunFlow
Document Type: Artigo em Revista Científica Internacional
Rights: openAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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