Advancements in Visible Reflection Coatings: Thin Films for Photonic and Optoelectronic Applications

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2025-04-22 DOI:10.1109/LPT.2025.3563312

Venkatesh Yepuri;Matte Rajayya

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引用次数: 0

Abstract

TiO₂/SiO₂ multilayer structures, have demonstrated reflectance exceeding 90% in the visible spectrum (500–600nm) and a contact angle of 45°, indicating strong hydrophilic self-cleaning properties. These coatings exhibit well-defined multilayers, with precise thickness control (~100–120 nm TiO₂, ~80–100 nm SiO₂), enhancing constructive interference and Bragg reflection for improved optical efficiency. XRD analysis confirmed the anatase phase of TiO₂, optimizing crystallinity and mechanical stability, while FTIR spectroscopy validated Si-O-Ti bonding, ensuring strong interfacial adhesion. These properties make the coatings highly effective for integration into silicon photonics, waveguides, and optoelectronic devices, reducing optical losses and improving energy efficiency. Their application spans next-generation augmented reality displays, self-cleaning solar panels, high-efficiency dielectric mirrors, and low-loss reflectors for photonic circuits. With their potential for scalable manufacturing and enhanced durability, these coatings represent a significant advancement in energy-efficient optical systems, paving the way for more sustainable and high-performance photonic technologies.

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可见光反射涂层的研究进展：光子与光电应用薄膜

在可见光谱（500-600nm）内，TiO2/SiO2多层结构的反射率超过90%，接触角为45°，具有较强的亲水性自清洁性能。这些涂层具有明确的多层结构，具有精确的厚度控制（~ 100-120 nm TiO2, ~ 80-100 nm SiO2），增强了相干干涉和Bragg反射，从而提高了光学效率。XRD分析证实了TiO2的锐钛矿相，优化了结晶度和机械稳定性，FTIR光谱验证了Si-O-Ti键合，确保了强大的界面附着力。这些特性使涂层非常有效地集成到硅光子学，波导和光电子器件中，减少光损耗并提高能量效率。它们的应用范围包括下一代增强现实显示器、自清洁太阳能电池板、高效介电镜和用于光子电路的低损耗反射器。凭借其可扩展制造和增强耐用性的潜力，这些涂层代表了节能光学系统的重大进步，为更可持续和高性能的光子技术铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.