TY - JOUR A1 - Ligorio, G. A1 - Nardi, M. V. A1 - Steyrleuthner, Robert A1 - Ihiawakrim, D. A1 - Crespo-Monteiro, N. A1 - Brinkmann, Martin A1 - Neher, Dieter A1 - Koch, N. T1 - Metal nanoparticle mediated space charge and its optical control in an organic hole-only device JF - Applied physics letters N2 - 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. Y1 - 2016 U6 - https://doi.org/10.1063/1.4945710 SN - 0003-6951 SN - 1077-3118 VL - 108 PB - American Institute of Physics CY - Melville ER -