Energy transfer in porous-silicon/laser-dye composite evidenced by polarization memory of photoluminescence
Energy transfer in porous-silicon/laser-dye composite evidenced by polarization memory of photoluminescence
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DOI：
10.1063/1.2814051
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发表时间：
2007-11
影响因子：
4
通讯作者：
A. Chouket;H. Elhouichet;M. Oueslati;H. Koyama;B. Gelloz;N. Koshida
中科院分区：
文献类型：
--
作者：
A. Chouket;H. Elhouichet;M. Oueslati;H. Koyama;B. Gelloz;N. Koshida
研究了罗丹明B - RhB染料分子包埋在纳米级多孔硅PS和多孔硅p -二氧化硅中的纳米复合材料的光学性质。样品是通过将多孔基质基质简单浸入RhB溶液中制备的。傅里叶变换红外光谱表明，RhB分子完全渗透到多孔基质中。在所有的实验纳米复合材料中都观察到有效的光致发光。极化记忆PM效应的测量为从PS到RhB分子的激发能转移提供了明确的证据，与RhB / p -二氧化硅复合材料中的PM行为形成对比。©2007美国物理学会。DOI: 10.1063/1.2814051
The optical properties of nanocomposites are studied for rhodamine B RhB dye molecules embedded in nanoscale porous silicon PS and porous silica P-silica. The samples are prepared by simple immersion of porous matrix substrates in RhB solutions. Fourier transform infrared spectroscopy suggests that RhB molecules fully penetrate into the porous matrix. Efficient photoluminescence has been observed in all experimental nanocomposites. The measurement of the polarization memory PM effect provides a clear evidence for the presence of an excitation energy transfer from PS to RhB molecules, in contrast to the PM behavior in RhB /P-silica composite. © 2007 American Institute of Physics. DOI: 10.1063/1.2814051