Spectral and dynamical study of nonlinear luminescence from silicon nanocrystals excited by ultrashort pulses

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F09%3A00331687" target="_blank" >RIV/68378271:_____/09:00331687 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Spectral and dynamical study of nonlinear luminescence from silicon nanocrystals excited by ultrashort pulses

Original language description

We report on the spectral and dynamical properties of photoluminescence (PL) under ultrashort laser pulse excitation in Si nanocrystals prepared by Si+-ion implantation into a silica matrix. We concentrate on the luminescence properties that make it possible to distinguish several luminescence bands within a broad luminescence spectrum. In time-integrated luminescence, saturation-related changes suggest a presence of two different recombination channels connected to the nanocrystal volume states and thenanocrystal?SiO2 interface. The saturation of the luminescence can be explained in terms of Auger recombination. We investigated in detail fast sub-nanosecond luminescence, where significant differences were observed under UV excitation and for the excitation wavelengths in the visible part of the spectrum. We propose a rate-equations model based on the Auger and radiative/nonradiative recombination to interpret the experimental data.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physica E: Low-Dimensional Systems and Nanostructures

ISSN

1386-9477

e-ISSN

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Volume of the periodical

41

Issue of the periodical within the volume

6

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

4

Pages from-to

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UT code for WoS article

000266675100017

EID of the result in the Scopus database

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