Abstract
With the increasing use of polymers in light emitting devices it is important to understand in detail how the pattern of the emitted radiation depends on the orientation of the polymer chains. The long chain molecular structure of typical polymer materials, together with the spin coating technique by which thin layers are fabricated, results in the molecules being predominantly oriented in the plane of the film. This results in significant optical birefringence.1,2
© 2000 Optical Society of America
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