Influence of air annealing on the luminescence dynamics of HPHT nanodiamonds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00470965" target="_blank" >RIV/68378271:_____/16:00470965 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/16:10330440 RIV/68407700:21230/16:00302983

Result on the web

<a href="http://dx.doi.org/10.1016/j.diamond.2016.06.001" target="_blank" >http://dx.doi.org/10.1016/j.diamond.2016.06.001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.diamond.2016.06.001" target="_blank" >10.1016/j.diamond.2016.06.001</a>

Result language

angličtina

Original language name

Influence of air annealing on the luminescence dynamics of HPHT nanodiamonds

Original language description

We present a study of the influence of air-annealing on the photoexcited charge carriers dynamics on the surface of nanodiamonds of sub-10 nm size. Samples were produced by high temperature annealing of high-pressure, high-temperature nanodiamonds. Measured photoluminescence spectra of annealed nanodiamonds show distinct blue shift and spectral narrowing compared to non-annealed reference. Time-resolved measurements revealed a change in relaxation process in the nanodiamond surface layer due to removal of non-diamond carbon phase on the surface. Spectro-temporal evolution takes place during the first 50 ps after photoexcitation suggesting that non-radiative states play a major role in the charge carrier relaxation. The acceleration of high energy states depopulation, observed for the annealed nanodiamonds, suggests gradual inhibition of non-radiative recombination channels (originally present in large numbers in non-annealed sample), which is in a good agreement with the picture of reduction of non-diamond carbon phase.

Czech name

—

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

—

Project

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Diamond and Related Materials

ISSN

0925-9635

e-ISSN

—

Volume of the periodical

68

Issue of the periodical within the volume

Sep

Country of publishing house

CH - SWITZERLAND

Number of pages

4

Pages from-to

62-65

UT code for WoS article

000383523900009

EID of the result in the Scopus database

2-s2.0-84975063316