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Metal nanoparticle mediated space charge and its optical control in an organic hole-only device
- 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 10(4) 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. (C) 2016 AIP Publishing LLC.
| Author details: | G. Ligorio, M. V. Nardi, Robert Steyrleuthner, D. Ihiawakrim, N. Crespo-Monteiro, Martin Brinkmann, Dieter NeherORCiDGND, N. Koch |
|---|---|
| DOI: | https://doi.org/10.1063/1.4945710 |
| ISSN: | 0003-6951 |
| ISSN: | 1077-3118 |
| Title of parent work (English): | Applied physics letters |
| Publisher: | American Institute of Physics |
| Place of publishing: | Melville |
| Publication type: | Article |
| Language: | English |
| Year of first publication: | 2016 |
| Publication year: | 2016 |
| Release date: | 2020/03/22 |
| Volume: | 108 |
| Number of pages: | 5 |
| Funding institution: | European Commission FP7 Project HYMEC [263073]; DFG [Sfb951]; Helmholtz Energy Alliance "Hybrid Photovoltaics" |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| Peer review: | Referiert |
