Metal nanoparticle mediated space charge and its optical control in an organic hole-only device

Giovanni Ligorio; M.V. Nardi; R. Steyrleuthner; Dris Ihiawakrim; N. Crespo-Monteiro; Martin Brinkmann; D. Neher; Norbert Koch

Metal nanoparticle mediated space charge and its optical control in an organic hole-only device

Giovanni Ligorio ¹ M.V. Nardi ¹ R. Steyrleuthner ² Dris Ihiawakrim ³ N. Crespo-Monteiro ⁴ Martin Brinkmann ⁵ D. Neher ² Norbert Koch ¹

1 Humboldt Universität zu Berlin

2 Universität Potsdam

3 IPCMS - Institut de Physique et Chimie des Matériaux de Strasbourg

4 LHC - Laboratoire Hubert Curien [Saint Etienne]

5 ICS - Institut Charles Sadron

Abstract : We reveal the role of localized space charges in hole-only devices based on an organic semiconductor with embedded metal nanoparticles (MNPs). MNPs act as deep traps for holes and reduce the current density compared to a device without MNPs by a factor of 104 due to the build-up of localized space charge. Dynamic MNPs charged neutrality can be realized during operation by electron transfer from excitons created in the organic matrix, enabling light sensing independent of device bias. In contrast to the previous speculations, electrical bistability in such devices was not observed.

Type de document :

Article dans une revue

Applied Physics Letters, American Institute of Physics, 2016, 108

Domaine :

Sciences de l'ingénieur [physics] / Micro et nanotechnologies/Microélectronique

Liste complète des métadonnées

https://hal-ujm.archives-ouvertes.fr/ujm-01309250
Contributeur : Nicolas Crespo-Monteiro <>
Soumis le : vendredi 29 avril 2016 - 10:51:24
Dernière modification le : jeudi 26 juillet 2018 - 01:10:31

Metal nanoparticle mediated space charge and its optical control in an organic hole-only device

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Metal nanoparticle mediated space charge and its optical control in an organic hole-only device

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