Rugge Alessandro, Park Jin-Seong, Gordon Roy G, Tolbert Sarah H
Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095-1569, USA.
J Phys Chem B. 2005 Mar 10;109(9):3764-71. doi: 10.1021/jp047068b.
The development of materials with a complete photonic band gap at visible wavelengths is believed to have the potential to lead to new control over long-lived emissive excited states, single molecule lasers, and nearly lossless nanoscale waveguides. In this work we move toward that goal with the synthesis of an inverse opal thin film of Ta3N5 produced through atomic layer deposition. The highly regular architecture achievable by atomic layer deposition is combined with an unusually high refractive index and transparency in at least part of the visible spectrum. The result is a material that represents the closest example to date of a photonic crystal with a band gap at optical wavelengths.
人们认为，开发在可见波长下具有完整光子带隙的材料，有可能实现对长寿命发射激发态、单分子激光器和近乎无损的纳米级波导的新控制。在这项工作中，我们朝着这个目标迈进，通过原子层沉积法合成了Ta3N5反蛋白石薄膜。原子层沉积法可实现的高度规则结构，与至少在部分可见光谱中异常高的折射率和透明度相结合。结果得到了一种材料，它是迄今为止最接近在光波长下具有带隙的光子晶体的实例。
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