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Polyaniline/graphene nanosheets (PANI/GNs) thermoelectric (TE) bulk composite pellets and films have been prepared with PANI to GNs weight ratios ranging from 4:1 to 1:1. Their structure and morphology have been investigated by Raman spectroscopy, thermogravimetric analysis and field emission scanning electron microscopy. The TE properties of the pellets and films were measured at room temperature...
We describe a novel organic light-emitting device (OLED) in which color, grey scale and intensity can be independently achieved. The device consists of three separately contacted, red-, green- and blue-emitting OLEDs placed in a vertical stack and separated by transparent, conducting electrodes. The stacked OLED (or SOLED) is shown to efficiently generate a high-intensity optical output whose color...
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