Excitation energy transfer in porous silicon/laser dye composites

被引：1

作者：

Pranculis, Vytenis ^{[1
]}

Simkiene, Irena ^{[1
]}

Treideris, Marius ^{[1
]}

Gulbinas, Vidmantas ^{[1
]}

机构：

[1] Ctr Phys Sci & Technol, LT-02300 Vilnius, Lithuania

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2013年 / 210卷 / 12期

关键词：

energy transfer; laser dyes; porous silicon; time resolved fluorescence; LIGHT-EMISSION; PHOTOLUMINESCENCE; BLUE; IMPREGNATION; ORIGIN;

D O I：

10.1002/pssa.201329299

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Excited state relaxation and energy transfer in porous silicon (PS)/laser dye [oxazine 1 (Ox1), rhodamine 6G (Rh6G)] composites have been studied by means of steady-state and time-resolved fluorescence. Fluorescence decay kinetics reveals the nonradiative energy transfer from PS to the dye. Increased decay rate of the dye luminescence in the composite indicates that opposite energy transfer is also likely. Analysis of the time-resolved fluorescence of the PS/R6G composite also shows that there is no energy transfer from silicon oxide responsible for the blue fluorescence band to silicon nanocrystalites, and that interaction between Si nanocrystals responsible for the red PS fluorescence is absent or weak.

引用

页码：2617 / 2621

页数：5

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