Subgap photoluminescence spectroscopy of nanocrystalline diamond films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F09%3A00206305" target="_blank" >RIV/00216208:11320/09:00206305 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/09:00337120

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Subgap photoluminescence spectroscopy of nanocrystalline diamond films

Original language description

We report on the effect of ambient conditions and UV irradiation on the subgap photoluminescence of nanocrystalline diamond prepared by microwave plasma enhanced chemical vapour deposition. We measured the photoluminescence of self-supporting membranes of thickness about 290 nm with the grain size up to 40 nm under variable ambient conditions - pressure, temperature, air, nitrogen and helium atmospheres. We have found that intensity of photoluminescence of samples kept under low pressure increases during the time. The photoluminescence intensity of samples under low pressure depends on sample temperature with maximum at about 260 K. The photoluminescence increase can be enhanced substantially by UV irradiation (325 nm) of the sample under certain conditions: temperature greater than 280 K, low pressure of ambient atmosphere. We interpret the experimental results in terms of desorption of water molecules and their interaction with the of individual diamond nanocrystals in the membrane.

Czech name

—

Czech description

—

Type

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

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

—

Project

<a href="/en/project/KAN400100701" target="_blank" >KAN400100701: Functional hybrid nanosystems of semiconductors and metals with organic materials (FUNS)</a><br>

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

Diamond and Related Materials

ISSN

0925-9635

e-ISSN

—

Volume of the periodical

18

Issue of the periodical within the volume

5-8

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

—

UT code for WoS article

000267737000019

EID of the result in the Scopus database

—