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Proceedings Paper

Direct surface engineering of silicon nanoparticles prepared by collinear double-pulse ns laser ablation
Author(s): M. H. Mahdieh; A. Momeni
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Paper Abstract

In this paper we study the photoluminescence properties of colloidal silicon nanoparticles (Si NPs) in distilled water, with the aim of clarifying the role of surface characteristics on the emission properties. We will show that double-pulse ns laser ablation (DPLA) of a silicon target in water with different inter-pulse delay times of i.e. 5 and 10 ns can result in production of colloidal Si NPs with different PL emission intensities at the visible spectral range of 550-650 nm. The results reveal that DPLA process at the different delay times can induce different oxide related surface characteristics on the Si NPs through the direct surface engineering of the nanoparticles. A detailed analysis of the PL emissions using the stochastic quantum confinement model explained that the different emission behaviors of the colloids are associated with the oxide-related surface states which are contributed as radiative centers in the PL process.

Paper Details

Date Published: 13 January 2017
PDF: 7 pages
Proc. SPIE 10254, XXI International Symposium on High Power Laser Systems and Applications 2016, 102541G (13 January 2017); doi: 10.1117/12.2257273
Show Author Affiliations
M. H. Mahdieh, Iran Univ. of Science and Technology (Iran, Islamic Republic of)
A. Momeni, Iran Univ. of Science and Technology (Iran, Islamic Republic of)


Published in SPIE Proceedings Vol. 10254:
XXI International Symposium on High Power Laser Systems and Applications 2016
Dieter Schuoecker; Richard Majer; Julia Brunnbauer, Editor(s)

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