Thermally stimulated luminescence from porous silicon

被引：2

作者：

Aksenov, VP ^{[1
]}

Mikhailova, GN ^{[1
]}

Boneberg, J ^{[1
]}

Leiderer, P ^{[1
]}

Muenzer, HJ ^{[1
]}

机构：

[1] Moscow Gen Phys Inst, Moscow 117942, Russia

来源：

NONRESONANT LASER-MATTER INTERACTION (NLMI-10) | 2001年 / 4423卷

关键词：

laser ablation; luminescence; nanocrystallites; porous silicon;

D O I：

10.1117/12.431204

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The time-resolved evolution of the cloud of the porous silicon (PS) particles produced by laser ablation is studied in situ by the analysis of the kinetics of photoluminescence (PL) signal. The cloud of the nanometer-sized silicon crystallites had the high enhancement of luminescence quantum efficiency (QE) in the red region of spectra. The slow PL kinetics component, which is due to the localized carriers, decays on a millisecond time scale. We observed high intensity of laser ablation process for light excited PS. We also study the emission of photons from remnants of porous silicon after laser ablation of PS sample. The red light generation was observed in this case of excitation of PS. Time-resolved experiments on the luminescence show that likely there are large lifetime phonons in quantum silicon wires.

引用

页码：70 / 73

页数：4

共 14 条

[1] ELECTRONIC-STRUCTURE AND PHOTOEXCITED-CARRIER DYNAMICS IN NANOMETER-SIZE CDSE CLUSTERS [J].