By Klaus Müllen, Ullrich Scherf
This high-class publication displays a decade of extreme study, culminating in very good successes over the past few years. The contributions from either academia in addition to the leaders mix the basics and most recent learn effects with software information and examples of functioning monitors. consequently, the entire 4 very important points of OLEDs are coated: - syntheses of the natural fabrics - actual idea of electroluminescence and gadget potency - equipment belief and building - characterization of either fabrics and units. the total is of course rounded off with a glance at what the longer term holds in shop. The editor, Klaus Muellen, is director of the hugely prestigious MPI for polymer learn in Mainz, Germany, whereas the authors comprise Nobel Laureate Alan Heeger, the most amazing founders of the sector, Richard pal, in addition to Ching Tang, Eastman Kodak's number-one OLED researcher, recognized through the whole neighborhood for his key courses.
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Additional resources for Organic light-emitting devices: synthesis, properties, and applications
1 lists the abbreviated and full names of all the polymers that appear in this chapter. The chemical structures of each of the polymers are displayed in Fig. 4. The HOMO and LUMO energies for all polymers are given in Fig. 5. These values have been determined via cyclic voltametry . 1 can be paired in six different ways. Some of these combinations have been employed successfully for various optoelectronic devices. g. 43 44 2 Electronic Processes at Semiconductor Polymer Heterojunctions Fig.
20) we show that Eq. 12) holds for polymeric exciplex systems. This means that the correlation between the solvation free energies and the exciplex binding energy that was described earlier also holds for the polymer system. Finally, we discussed that exciplex formation is accompanied by an entropy decrease. In a solid-state film this change in entropy is small, which in theory should facilitate exciplex formation. 4 The Polymers used in this Chapter The polymers used in this chapter are all polyfluorene derivatives.
2 Visualization of the molecular orbital interactions in ground-state and excited-state complexes of molecules M and N. The sketch is drawn for two identical molecules (M = N). For dissimilar molecules, charge-transfer interactions stabilize the complex further. 1 Introduction Fig. 3 Potential energy surface description of exciplex formation between two molecules M and N. jMNi and jM*Ni are the ground- and excited-state curves. rMÀN stands for the intermolecular distance. Eexciton and Eexciplex are the exciton and exciplex energy levels, while Ex is the energy of exciplex photoemission.
Organic light-emitting devices: synthesis, properties, and applications by Klaus Müllen, Ullrich Scherf