Nanoscale color control of TiO2 films with embedded Au nanoparticles
Nanoscale color control of TiO2 films with embedded Au nanoparticles
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DOI：
10.1016/j.matlet.2010.08.031
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发表时间：
2010-12
影响因子：
3
通讯作者：
M. Torrell;L. Cunha;M. R. Kabir;A. Cavaleiro;M. Vasilevskiy;F. Vaz
中科院分区：
文献类型：
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作者：
M. Torrell;L. Cunha;M. R. Kabir;A. Cavaleiro;M. Vasilevskiy;F. Vaz
我们证明了一个有效的纳米尺度控制的光学性质的TiO 2薄膜通过调整表面等离子体共振（SPR）嵌入Au纳米粒子。薄膜采用反应磁控溅射法生长。SPR调谐通过不同的退火来实现，这影响Au纳米颗粒的形状和尺寸，以及介电基质的相。这些变化促进了光学性质的变化。通过模拟TiO 2/Au在SPR区的有效介电函数，发现其光吸收谱的变化与表面形貌的变化有关。
We demonstrate an efficient nanoscale control of the optical properties of TiO2films by tuning the Surface Plasmon Resonance (SPR) in the embedded Au nanoparticles. The films were grown by reactive magnetron sputtering. SPR tuning was achieved by different annealings, which affected the shape and size of the Au nanoparticles, and also the phase of the dielectric matrix. These changes promoted the variations on the optical properties. As shown by the modeling of the effective dielectric function of the TiO2/Au in the SPR region, the variation of their optical absorption spectra correlates with morphological changes.