Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00361260" target="_blank" >RIV/68378271:_____/11:00361260 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1002/pssc.201000394" target="_blank" >http://dx.doi.org/10.1002/pssc.201000394</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pssc.201000394" target="_blank" >10.1002/pssc.201000394</a>

Result language

angličtina

Original language name

Ultrafast photoluminescence dynamics of blue-emitting silicon nanostructures

Original language description

We report on ultrafast photoluminescence (PL) spectroscopy of blue and red-emitting silicon nanostrucures. We prepared samples of porous Si with different dominating PL bands in time-integrated PL spectrum. These samples show also striking differences inultrafast PL dynamics. For the red-emitting samples we observe rapid PL onset followed by a two-exponential decay, which is spectrally dependent. For the blue-emitting porous Si the PL builds up several ps and decays mono-exponentially with spectrally independent PL rise and decay times. Our results indicate that a dominant part of the blue and red emission comes from two distinct species with different energy states structures. This is also supported by two-photon absorption induced PL measurements. The two-photon and one-photon absorption induced PL spectra, which are identical for the red-emitting samples, differ substantially for the blue-emitting ones.

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

2011

Confidentiality

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

Name of the periodical

Physica Status Solidi C: Current Topics in Solid State Physics

ISSN

1862-6351

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

979-984

UT code for WoS article

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EID of the result in the Scopus database

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