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Langenhorst M, Ritzer D, Kotz F, Risch P, Dottermusch S, Roslizar A, Schmager R, Richards BS, Rapp BE, Paetzold UW. Liquid Glass for Photovoltaics: Multifunctional Front Cover Glass for Solar Modules. ACS APPLIED MATERIALS & INTERFACES 2019; 11:35015-35022. [PMID: 31468967 DOI: 10.1021/acsami.9b12896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Advanced optical concepts, making use of tailored microstructured front cover glasses, promise to reduce the losses encountered with encapsulated solar modules. However, implementing optical concepts into the conventional architecture of encapsulated solar modules and simultaneously maintaining high durability represent a severe technological challenge. The liquid glass technique offers a route to meet this challenge by enabling the implementation of these optical concepts directly into the durable front cover glass of solar modules. In this work, we demonstrate for the first time two showcases of texturing fused silica front cover glass, using the facile liquid glass technique: (I) multifunctional microcone textures that reduce front-side reflection losses by ∼80% compared to a planar reference, which correlates to an increase in short-circuit current density of encapsulated planar monocrystalline silicon heterojunction solar cells by 2.9 mA cm-2, and exhibit strong hydrophilic behavior facilitating self-cleaning and (II) embedded freeform surface cloaks that redirect incident light away from the metallic contact grids of the solar cell and demonstrate a cloaking efficiency of ∼88%.
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Affiliation(s)
- Malte Langenhorst
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
| | - David Ritzer
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
| | - Frederik Kotz
- Department of Microsystems Engineering , University of Freiburg , 79110 Freiburg , Germany
| | - Patrick Risch
- Department of Microsystems Engineering , University of Freiburg , 79110 Freiburg , Germany
| | - Stephan Dottermusch
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
| | - Aiman Roslizar
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
| | - Raphael Schmager
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
| | - Bryce S Richards
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
- Light Technology Institute , Karlsruhe Institute of Technology , 76131 Karlsruhe , Germany
| | - Bastian E Rapp
- Department of Microsystems Engineering , University of Freiburg , 79110 Freiburg , Germany
| | - Ulrich W Paetzold
- Institute of Microstructure Technology , Karlsruhe Institute of Technology , 76344 Eggenstein-Leopoldshafen , Germany
- Light Technology Institute , Karlsruhe Institute of Technology , 76131 Karlsruhe , Germany
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