One Dimensional Photonic Crystals Using Ultrahigh Refractive Index Chalcogenide Hybrid Inorganic/Organic Polymers
One Dimensional Photonic Crystals Using Ultrahigh Refractive Index Chalcogenide Hybrid Inorganic/Organic Polymers
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DOI：
10.1021/acsmacrolett.8b00245
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发表时间：
2018-07-01
影响因子：
7.015
通讯作者：
Pyun, Jeffrey
中科院分区：
文献类型：
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作者：
Kleine, Tristan S.;Diaz, Liliana Ruiz;Pyun, Jeffrey
我们报道了通过溶液处理制造全聚合物一维光子晶体（即布拉格反射器，布拉格反射镜），用于近红外（NIR）和短波（SWIR）红外光谱（1-2 μ m），具有非常高的反射率（R类似于90-97%）。通过直接接触溶液可加工的超高折射率聚合物（称为硫系化合物杂化无机/有机聚合物（CHIPs）），可以轻松制造这些高反射薄膜。CHIPs材料（n = 1.75-2.10）的高折射率(n)允许用低n聚合物（如醋酸纤维素（n = 1.47））制造具有高折射率对比度（Delta n类似于0.5）的窄带红外布拉格反射器。这是最高的折射率对比（Delta n类似于0.5），证明了全聚合物布拉格反射镜，直接实现了高反射率从22层或更少的薄膜。从廉价的芯片材料中轻松获取模块化、薄的、高反射的薄膜，为红外Bragg在红外光子学、商业传感和激光雷达应用中的潜在应用提供了新的途径。反射器和其他具有红外光子学、商业传感和激光雷达应用潜力的反射涂层。
We report on the fabrication of wholly polymeric one-dimensional (1-D) photonic crystals (i.e., Bragg reflectors, Bragg mirrors) via solution processing for use in the near (NIR) and the short wave (SWIR) infrared spectrum (1-2 mu m) with very high reflectance (R similar to 90-97%). Facile fabrication of these highly reflective films was enabled by direct access to solution processable, ultrahigh refractive index polymers, termed, Chalcogenide Hybrid Inorganic/Organic Polymers (CHIPs). The high refractive index (n) of CHIPs materials (n = 1.75-2.10) allowed for the production of narrow band IR Bragg reflectors with high refractive index contrast (Delta n similar to 0.5) when fabricated with low n polymers, such as cellulose acetate (n = 1.47). This is the highest refractive index contrast (Delta n similar to 0.5) demonstrated for an all-polymeric Bragg mirror which directly enabled high reflectivity from films with 22 layers or less. Facile access to modular, thin, highly reflective films from inexpensive CHIPs materials offers a new route to IR Bragg potential applications for IR photonics, commercial sensing, and LIDAR applications. reflectors and other reflective coatings with potential applications for IR photonics, commercial sensing, and LIDAR applications.