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Hexagonal ordered arrays of microsized (1–1.5 μm diameter) electroluminescent spots have been obtained by using an innovative approach in the fabrication of organic light emitting diodes. Polymer self-organisation provides the ordered pattern and soft lithography replicates the latter onto the desired electroluminescent polymer, exhibiting red, green and blue emission. Any conventional photolithographic...
We have fabricated and characterized sandwich-type devices based on an oriented polythiophene derivative. Depending on the voltage sweep direction, the devices showed the presence of two conducting states. Switching between the two states and an associated memory have earlier been studied by current-voltage characteristics. In this article, we have studied impedance spectroscopy of the material to...
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