Tunable, narrow-band light emission from size-selected Si nanoparticles produced by pulsed-laser ablation

被引：59

作者：

Orii, T ^{[1
]}

Hirasawa, M ^{[1
]}

Seto, T ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Adv Mfg Nanoscale Sci & Engn, Tsukuba, Ibaraki 3058564, Japan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 16期

关键词：

D O I：

10.1063/1.1621457

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have demonstrated narrow-band visible light emission from size selected silicon nanoparticles (np-Si), with a wavelength controlled by size tuning. The np-Si were synthesized by pulsed-laser ablation of a silicon single-crystal target in high-purity He background gas. A postannealing process improved morphology and crystallinity. Using a differential mobility analyzer, nanoparticles were classified with a diameter tunable from 3 to 6 nm. Monodispersed np-Si deposited on substrate exhibited a sharp photoluminescence band. The energy of this band increased from 1.34 to 1.79 eV with decrease in particle size, and narrowed to approximately 0.22 eV full width at half maximum due to highly resolved size-selection and improvement in crystallinity. The results suggest that tunable, narrow-band light emitting np-Si produced by gas phase synthesis have good possibilities for application as optoelectronic devices. (C) 2003 American Institute of Physics.

引用

页码：3395 / 3397

页数：3

共 27 条

[1] THE ORIGIN OF VISIBLE LUMINESCENCE FROM POROUS SILICON - A NEW INTERPRETATION [J].