Skip to Main content Skip to Navigation
Conference papers

ZnO nanowires as effective luminescent sensing materials for nitroaromatic derivatives

Roy Aad 1 Vesna Simic 2 Loïc Le Cunff 3, 1 Licinio Rocha 2 Vincent Sallet 4 Corinne Sartel 4 Alain Lusson 4 Christophe Couteau 1 Gilles Lerondel 1
1 LNIO - Laboratoire de Nanotechnologie et d'Instrumentation Optique
ICD - Institut Charles Delaunay
2 LCAE - Laboratoire Capteurs et Architectures Electroniques
DM2I - Département Métrologie Instrumentation & Information : DRT/LIST/DM2I
3 UMT Géno-vigne® - Géno-vigne®
4 GEMAC - Groupe d'Etude de la Matière Condensée
Abstract : We report on the efficient room-temperature photoluminescence (PL) quenching of ZnO in the presence of 2,4-dinitrotoluene (DNT) vapor and for concentration as low as 180 ppb. Compared to ZnO thin films, ZnO nanowires exhibit a strong (95%) and fast (41 s) quenching of the PL intensity in the presence of DNT vapor. Assuming that the PL quenching is due to a trapping of the ZnO excitons by adsorbed DNT molecules, Monte-Carlo calculations show that the nanometric dimensions as well as the better crystallographic quality (longer mean free path) of the ZnO nanowires result in an enhanced trapping process at the origin of the improved sensing properties of the nanowires. The results demonstrate the importance of nanostructures in improving the sensitivity of ZnO. The study also reveals the sensing capability of ZnO nanowires and paves the path towards the potential realization of low-cost sub-ppb nitroaromatic derivative sensors.
Keywords : crystallographic quality sub-ppb nitroaromatic derivative sensors nanostructure nanowire photoluminescence quenching ZnO ZnO excitons 4-dinitrotoluene (DNT) nanometric dimension Monte-Carlo calculations Thin film Instrumentation
Document type :
Conference papers
Complete list of metadatas
https://hal-cea.archives-ouvertes.fr/cea-02526315
Contributor : Jean-Baptiste Vu Van <>
Submitted on : Tuesday, March 31, 2020 - 3:05:11 PM
Last modification on : Wednesday, July 1, 2020 - 12:39:18 PM

Identifiers

  • HAL Id : cea-02526315, version 1

Collections

INRA | UVSQ | CEA | GEMAC | DRT | LIST | DM2I | P2MN | UTT | CNRS | INRAE | MONTPELLIER-SUPAGRO

Citation

Roy Aad, Vesna Simic, Loïc Le Cunff, Licinio Rocha, Vincent Sallet, et al.. ZnO nanowires as effective luminescent sensing materials for nitroaromatic derivatives. SPIE Optics and Photonics, San Diego Convention Center 2013, Aug 2013, San Diego, United States. ⟨cea-02526315⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

36