Bengoechea Apezteguía, Jaione

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https://academica-e.unavarra.es/handle/2454/48700

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Bengoechea Apezteguía

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Jaione

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Física

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1174492

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3095

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2022 - 20262
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Author: Buceta, Alicia ×

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    PublicationOpen Access
    Random subwavelength structures on glass to improve photovoltaic module performance
    (Elsevier, 2022) Pinto Fuste, Cristina Leyre; Cornago Santos, Ignacio; Buceta, Alicia; Zugasti, Eugenia; Bengoechea Apezteguía, Jaione; Institute of Smart Cities - ISC; Gobierno de Navarra / Nafarroako Gobernua; Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa
    Glass samples have been processed by a single-step self-masking RIE (Reactive Ion Etching) process to obtain random subwavelength structures (SWSs), which mimic anti-reflective and anti-soiling patterns present in nature. The SWSs fabricated on glass provide an excellent broadband omnidirectional anti-reflective (AR) property (<1% absolute reflectance) in the spectral region (300–1200) nm due to the graded refractive index that these SWS produce in the air–glass interface, reducing the reflectance. Moreover, these SWSs increase the roughness of the glass surface enhancing its wettability and anti-soiling properties. In order to quantify the performance improvement of photovoltaic devices when using these structured glasses as front cover, commercial PERC (Passivated Emitter and Rear Contact) solar cells have been laminated with these structured glasses using the standard configuration (glass/EVA/Solar Cell/EVA/backsheet) and their electrical parameters such as I–V curve, spectral response, and IAM (Incidence Angle Modifier) factor have characterized.
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    PublicationOpen Access
    Impact of melting range on delamination process and recycling potential of photovoltaic encapsulants
    (Elsevier, 2026-01-01) Murillo, Asier; Buceta, Alicia; Urbina Yeregui, Antonio; Bengoechea Apezteguía, Jaione; Ciencias; Zientziak; Institute for Advanced Materials and Mathematics - INAMAT2; Gobierno de Navarra / Nafarroako Gonernua
    In this study, we introduce a method to evaluate the disassembly potential of photovoltaic (PV) modules by quantifying the force required to separate their constituent layers. Specifically, we conducted delamination tests on single-cell photovoltaic modules, focusing on three polymeric encapsulants: on the one hand, the cross-linked encapuslant Ethylene Vinyl Acetate (EVA) and Polyolefin Elastomer (POE); on the other hand, the noncross-linked Thermoplastic Polyolefin (TPO). The objective was to demonstrate that delamination force significantly decreases at temperatures exceeding the polymer's melting range, as determined by Differential Scanning Calorimetry (DSC). Therefore, delamination was performed at various temperatures using a blade to separate the glass from the remaining layers. The results indicate that, beyond the melting range, the delamination force decreases markedly for all three encapsulants. Furthermore, TPO exhibited the lowest delamination strength, followed by EVA and POE, with the latter two requiring similar forces once their melting ranges were exceeded. © 2025 Elsevier B.V., All rights reserved.