5 papers
Photoemission intermittency via stochastic gating in rubrene nanowires coupled to plasmonic silver nanoparticles
Moha Naeimi, Waqas Pervez, Frithjof Harmsen +2
In this work, we report a new nanoscale phenomenon observed as photoemission intermittency (On-Off electron emission), manifested as stochastic bursts in electron yield at quasi-on…
Dual-wavelength control of charge accumulation in rubrene microcrystals with anisotropic conductivity
Moha Naeimi, Ingo Barke, Sylvia Speller
Previously, a novel type of rubrene microcrystals was reported, forming two distinct sectors -- diamond- and triangular-shaped -- that exhibit pronounced contrasts in photoluminesc…
Plasmon-assisted photoelectron emission in a model cluster using time-dependent density functional theory and the time-dependent surface-flux method
Mikhail Bednov, Waqas Pervez, Ingo Barke +1
We investigate plasmon-assisted photoelectron emission using a one-dimensional time-dependent density-functional theory (TDDFT) model. Photoelectron spectra are computed with the t…
Zone-sectored organic crystals with spatially resolved exciton dynamics
Moha Naeimi, Tim Völzer, Regina Lange +4
Among the organic semiconductors, rubrene stands out in terms of hole mobility, luminescence yield and exciton migration distance. A novel type of rubrene microcrystal is prepared…
Imaging domain boundaries of rubrene thin crystallites by photoemission electron microscopy
Moha Naeimi, Katharina Engster, Waqas Pervez +2
The progress of designing organic semiconductors is extensively dependent on the quality of prepared organic molecular assemblies, since the charge transport mechanism is strongly…