Photoluminescence properties of porous silicon/fluorene dye composites

被引：10
作者：
Fakis, M. [1 ]
Zacharatos, F. [2 ]
Gianneta, V. [2 ]
Persephonis, P. [1 ]
Giannetas, V. [1 ]
Nassiopoulou, A. G. [2 ]
机构：
[1] Univ Patras, Dept Phys, Patras 26504, Greece
[2] IMEL NCSR Demokritos, Athens 15310, Greece
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2009年 / 165卷 / 03期
关键词：
Porous silicon; Photoluminescence properties; Fluorene dye; Hybrid materials; MACROPOROUS SILICON MEMBRANES; LIGHT-EMITTING-DIODES; P-TYPE SILICON; PHOTOPHYSICAL PROPERTIES; SEMICONDUCTING POLYMER; 2-PHOTON ABSORPTION; PHENYLENE VINYLENE; SUBSTRATE; ALUMINA; SI;
D O I：
10.1016/j.mseb.2009.06.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on the fabrication and the photoluminescence (PL) study of hybrid nanocomposites formed by embedding fluorene dye molecules in the vertical cylindrical nanopores of a nanoporous silicon layer. The pores had a diameter of similar to 20nm and were homogeneously filled with the fluorene molecules as evidenced by scanning electron microscopy images. Efficient PL in the blue spectral region, attributed to the fluorene dyes embedded into the pores, was obtained from the composites. The PL spectrum of the dyes in porous silicon is blue-shifted compared to their PL spectrum in solution due to the confinement and isolation of the molecules into the pores. This blue-shift was enhanced when the dyes were initially dissolved in an aromatic solvent. (c) 2009 Elsevier B.V. All rights reserved.
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页码：252 / 255
页数：4
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