Han Wu, Zhenghao Huan, Haiqi Gao, Haidong He, Junren Wen, Yueguang Zhang, Tao Liang, Yifan Zheng, Yuchuan Shao, Weidong Shen, Chenying Yang
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High-Performance and Low-Cost Gradient Refractive Index Films for Ultra-Broadband and Ultra-Wide Angle Antireflective Applications
Gradient refractive index (GRIN) films have great potential for applications in photovoltaics, imaging, and other fields due to their excellent antireflective ability. However, the development of highly reproducible processes for large-area GRIN film preparation remains challenging. Here, a novel method to fabricate GRIN nanoporous silica films is proposed using magnetron co-sputtering of silica-alumina composite multilayer films followed by single-step selective wet etching with phosphoric acid. The GRIN film with excellent ultra-broadband, ultra-wide angle antireflective properties (average double-sided reflection suppressed within 14.2% up to 70° for 400–2000 nm band), high reproducibility, and good environmental reliability is demonstrated. Furthermore, the photovoltaic glass covers prepared with this GRIN film are verified to help reduce the energy loss in solar cells.
期刊介绍：
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.
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