纳米压印光刻
材料科学
菲涅耳透镜
防反射涂料
卷到卷处理
光学
菲涅耳方程
光伏
光电子学
平版印刷术
选矿厂
制作
能量转换效率
非成像光学
光伏系统
折射率
涂层
纳米技术
镜头(地质)
物理
病理
生物
医学
替代医学
生态学
作者
Alejandra Jacobo-Martín,Norman Jost,Jaime J. Hernández,César Domínguez,Guido Vallerotto,Stephen Askins,Ignacio Antón,Isabel Rodríguez
出处
期刊:Optics Express
[The Optical Society]
日期:2021-10-05
卷期号:29 (21): 34135-34135
被引量:10
摘要
Roll-to-roll nanoimprint lithography (R2R-NIL) is an enabling technology for the low-cost mass production of high-quality micro- and nano-sized optical elements. Particularly, the fabrication of Fresnel lenses using R2R-NIL is a promising approach to produce optical arrays for micro-concentrator photovoltaic modules. This work investigates the application of a continuous R2R imprinting process based on ultraviolet curing of transparent photopolymer resins (UV-NIL) to fabricate high-efficiency and low-cost Fresnel lenses. The morphological attributes and the related optical performance of the lenses fabricated using roll-to-roll UV-NIL on flexible PET sheets yielded optical efficiency values up to ∼ 69% at a concentration ratio of 178X, whereas a value of ∼ 77% was obtained for the UV-NIL batch processed on a flat rigid substrate. Further improvement of the optical efficiency has been achieved by adding moth-eye inspired antireflective (AR) features on the side opposite to the Fresnel motifs via a double-sided R2R UV-NIL process. The process developed paves the way for cost-effective mass production of high-efficiency Fresnel lenses for micro-concentrator photovoltaics.
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