A5094299755- Organic Light-Emitting Diodes Research
- Nonlinear Optical Materials Studies
- Photochemistry and Electron Transfer Studies
- Organic Electronics and Photovoltaics
- Organic and Molecular Conductors Research
- Luminescence and Fluorescent Materials
- Porphyrin and Phthalocyanine Chemistry
- Perovskite Materials and Applications
University of Siegen
2024-2025
Organic‐inorganic halocuprates(I) form a promising class of light‐emitting materials with high photoluminescence (PL) quantum yield. However, the understanding their emission properties and PL mechanism is still limited. Here, we investigate thin films bis(tetrapropylammonium) hexa‐µ‐bromo‐tetrahedro‐tetracuprate(I), [N(C3H7)4]2[Cu4Br6], which has zero‐dimensional (0D) molecular salt structure containing [Cu4Br6]2− ions. The compound shows bright orange PL, consisting two bands, yield about...
Carbazole-based molecular units are ubiquitous in organic optoelectronic materials; however, the excited-state relaxation of these compounds is still underexplored. Here, we provide a detailed investigation carbazole (Cz) and 3,6-di-tert-butylcarbazole (t-Bu-Cz) solvents using femtosecond nanosecond UV–Vis–NIR transient absorption spectroscopy, as well time-resolved fluorescence experiments upon photoexcitation deep-UV range. The initially prepared Sx singlet state has (sub-)picosecond...
Thin films of carbazole (Cz) derivatives are frequently used in organic electronics, such as light-emitting diodes (OLEDs). Because the proximity Cz units, excited-state relaxation is complicated, intermolecular pathways, singlet–singlet annihilation (SSA), kinetically compete with emission. Here, we provide an investigation two benchmark systems employing neat and 3,6-di-tert-butylcarbazole (t-Bu-Cz) also their thin film blends poly(methyl methacrylate) (PMMA). These investigated by a...