Effective module level encapsulation of CIGS solar cells with Al2O3 thin film grown by atomic layer deposition
In: Solar Energy Materials and Solar Cells Solar Energy Materials and Solar Cells, Elsevier, 2021, 222, pp.110914. ⟨10.1016/j.solmat.2020.110914⟩; (2021-04-01)
Online
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Zugriff:
An effective encapsulation solution for flexible CIGS is urgently needed to ensure a competitive market entry of the technology. In this work, we demonstrate the feasibility to effectively encapsulate module-level (10 × 10 cm2) CIGS/glass solar cells by employing a thin Al2O3 barrier layer grown by atomic layer deposition (ALD). As determined by a direct methodology, 10 nm ALD-Al2O3 is proved to be sufficient in preventing electrical degradation of the Al:ZnO (AZO) window layer upon exposure to damp heat test (DHT) and equally effective to encapsulate 10 × 10 cm2 CIGS/glass mini-modules by efficient blockage of moisture ingress. CIGS mini-modules encapsulated by ALD-Al2O3 barrier layer retain an average of 80% and 72% of initial efficiency after 1000 and 2000 h of DHT, respectively. Whereas unencapsulated modules drop to an average of 67% (1000 h DHT) and 22% (2000 h DHT) of initial efficiency. Thanks to the presence of ALD-Al2O3 barrier layer, less electrical degradation occurred in AZO window layer and P3 interconnection; also less shunting paths appeared – both led to a lower FF drop in encapsulated CIGS mini-modules. However, an issue of Na migration out of the CIGS layer is observed, which negatively impacts the module stability during DHT.
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Effective module level encapsulation of CIGS solar cells with Al2O3 thin film grown by atomic layer deposition
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Autor/in / Beteiligte Person: | Schneider, Nathanaelle ; Wuerz, Roland ; Hempel, Wolfram ; Salomon, Oliver ; Izquierdo-Roca, Victor ; Zhang, Shan-Ting ; Guc, Maxim ; Kessler, Friedrich ; Pérez-Rodríguez, Alejandro ; Hildebrandt, Thibaud ; Institut Photovoltaïque d’Ile-de-France (ITE) (IPVF) ; Zentrum fur Sonnenenergie-und Wasserstoff-Forschung (ZSW) ; Zentrum fur Sonnenenergie-und Wasserstoff-Forschung ; Institut Photovoltaïque d’Ile-de-France (UMR) (IPVF) ; École polytechnique (X)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP) ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-TOTAL FINA ELF-EDF (EDF)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Photovoltaïque d’Ile-de-France (ITE) (IPVF)-Air Liquide [Siège Social] |
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Quelle: | Solar Energy Materials and Solar Cells Solar Energy Materials and Solar Cells, Elsevier, 2021, 222, pp.110914. ⟨10.1016/j.solmat.2020.110914⟩; (2021-04-01) |
Veröffentlichung: | HAL CCSD, 2021 |
Medientyp: | unknown |
ISSN: | 0927-0248 (print) |
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