Polymer-based light-emitting devices

In this section, the basic features of light absorption and emission (luminescence) processes in conjugated systems are reviewed. The discussion will focus on poly(/>-phenylenevinylene), PPV, compounds, which provide typical examples of the physical phenomena to be highlighted in the context of polymer-based light emitting devices. 

We have carried out time-resolved EL measurements of polymer-based light-emitting devices. The transient EL spikes exhibit bi-exponential decay pattern. Temperature independence of the decay pattern allows us to rule out polarization due to polymer matrix relaxation as an EL governing process. According to our interpretation, the phenomenon of double light spikes under pulsed electrical... 

The final step in making a fully printed polymer-based light-emitting display is the encapsulation step. Encapsulation is perhaps the most critical step in the process as unencapsulated devices fail within a few days of fabrication. For devices using evaporated cathodes that are... 

Ketonic Defects Related to Polymer Synthesis Oxidative Degradation of PF-Type Polymers Spectral Degradation of PPP-Based Light-Emitting Devices... 

Volume 10 includes topics on organic and polymer-based light emitting diodes, optical devices based on conducting polymers, intercalation compounds for advanced lithium batteries, polymer electrets for electronics, sensor, and photonic applications, charge transporting polymers and molecular glasses, and electrochemically prepared thin films for solar cells. 

A notable distinction needs to be made. Molecular materials for electronics deals with films or crystals that contain many trillions of molecules per functional unit, the properties of which are measured on the macroscopic scale, while molecular scale electronics deals with one to a few thousand molecules per device. For example, thin film transistors (TFTs) and polymer-based light emitting diodes (LEDs) utilize molecular materials for electronics. The grain size of many of these crystalline features in TFTs and LEDs is in the... 

Interface control of light-emitted devices based on pyridine-containing conjugated polymers 99ACR217. 

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