Bernice Mae Yu Jeco-Espaldon, Aris C. Larroder, Dan Michael A. Asequia, Myeongok Kim, Erwin C. Sumarago, Jaedy V. Declarador, Stephen G. Sabinay, Noel Peter B. Tan, Yoshitaka Okada
Organic nanomaterials like nanocellulose offer sustainable advantages due to their renewability. Although nanocellulose is well-established in polymer reinforcement, its application as an anti-reflection coating in photovoltaic technologies remains underexplored. This study investigates Agave cantala nanocellulose–cyclic olefin copolymer (ACN-COC) composites as eco-friendly anti-reflection coating for III-V multijunction solar cells (MJSCs). Composite films with 0.10 % weight-to-volume (w/v) ACN concentration and 1.0 % w/v COC were prepared and coated to commercial MJSCs, resulting in an absolute 1.60 % increase in power conversion efficiency at unconcentrated, global air mass 1.5 standard illumination. This suggests that ACN-COC coatings are effective in reducing solar cell device's surface reflection. These findings highlight the promise of ACN-COC composites as eco-friendly coating that can boost solar cell performance and durability, paving the way for high-efficiency, next-generation sustainable photovoltaic technologies. © 2026 Elsevier B.V.
Research Center for Advanced Science and Technology (RCAST), The University of Tokyo, Meguro, Tokyo, 153-8904, Japan; Department of Electronics Engineering, College of Technology, University of San Agustin, Iloilo City, 5000, Philippines; Center for Advanced New Materials, Engineering, and Emerging Technologies (CANMEET), University of San Agustin, Iloilo City, 5000, Philippines; Department of Physical Sciences, College of Arts and Sciences, West Visayas State University, Iloilo City, 5000, Philippines; Department of Chemical Engineering, School of Engineering, University of San Carlos, Cebu City, 6000, Philippines; Biotechnology and Biomedical Research Laboratory, College of Medicine, West Visayas State University, Iloilo.City, 5000, Philippines; Department of Chemical Engineering, College of Technology, University of San Agustin, Iloilo City, 5000, Philippines
