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首页> 外文会议>Symposium on Quantum Confined Semiconductor Nanostructures Dec 2-5, 2002 Boston, Massachusetts, U.S.A. >OPTICAL PROPERTIES OF SILICON NANOPARTICLES IN SILICA GEL MONOLITHS
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OPTICAL PROPERTIES OF SILICON NANOPARTICLES IN SILICA GEL MONOLITHS

机译：硅凝胶单体中硅纳米粒子的光学性质

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摘要

We have synthesized highly photoluminescent monoliths by incorporating nanocrystalline Silicon (nc-Si) from Porous Silicon (PSi) into a Sol Gel Silica matrix. The optically transparent samples are the result of mixing an acid catalyzed solution of Sol-Gel and nc-Si that forms a solution of Si-nanoclusters (Si-n) that eventually after condensation for three days produces the final luminescent material. Photoluminescence (PL) basic studies show a very high orange emission band with a maximum peak that ranges between 600 nm and 750 nm. The PL emission intensity was increased up to ten times the luminescence of the native nano material PSi, the mechanical and thermal stability properties were also greatly improved. The PL corresponds to different concentrations or preparations of Sol-Gel with Si-n (Sol-Si) with a broad size distribution that produces orange and blue emissions, and for this reason we take as our future work to tailor samples with very high Si-n densities for semiconducting and photonic applications.
机译：我们通过将多孔硅（PSi）中的纳米晶硅（nc-Si）掺入Sol Gel二氧化硅基质中来合成高度光致发光的整体材料。光学透明的样品是将Sol-Gel和nc-Si的酸催化溶液混合后形成的结果，该溶液形成了Si-纳米簇（Si-n）溶液，该溶液最终在凝结三天后会产生最终的发光材料。光致发光（PL）基础研究显示出非常高的橙色发射带，其最大峰值在600 nm至750 nm之间。 PL发射强度提高到自然纳米材料PSi发光的十倍，机械和热稳定性能也大大提高。 PL对应不同浓度或制备的具有宽尺寸分布的Si-n的Sol-Gel（Sol-Si），会产生橙色和蓝色的发射光，因此，我们将今后的工作量身定制具有很高Si的样品-n用于半导体和光子应用的密度。

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