Coexistence of quasi-1D and 0D photoluminescence from single silicon nanowires

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10109233" target="_blank" >RIV/00216208:11320/11:10109233 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1021/nl201610g" target="_blank" >http://dx.doi.org/10.1021/nl201610g</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/nl201610g" target="_blank" >10.1021/nl201610g</a>

Result language

angličtina

Original language name

Coexistence of quasi-1D and 0D photoluminescence from single silicon nanowires

Original language description

Single silicon nanowires (Si-NWs) prepared by electronbeam lithography and reactive-ion etching are investigated by imaging optical spectroscopy under variable temperatures and laser pumping intensities. Spectral images of individual Si-NWs reveal a large variability of photoluminescence (PL) along a single Si-NW. The weaker broad emission band asymmetrically extended to the high-energy side is interpreted to be due to recombination of quasi-free 1D excitons while the brighter localized emission features (with significantly variable peak position, width, and shape) are due to localization of electron-hole pairs in surface protrusions acting like quasi-0D centers or quantum dots (QDs). Correlated PL and scanning electron microscopy images indicate thatthe efficiently emitting QDs are located at the Si-NW interface with completely oxidized neck of the initial Si wall. Theoretical fitting of the delocalized PL emission band explains its broad asymmetrical band to be due to the Gaussian s

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

BH - Optics, masers and lasers

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

Nano Letters

ISSN

1530-6984

e-ISSN

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Volume of the periodical

11

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

3003-3009

UT code for WoS article

000292849400075

EID of the result in the Scopus database

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