Carbon nanotube sheets as electrodes in organic light-emitting diodes

High performance organic light-emitting diodes (OLEDs) were implemented on transparent and conductive single-wall carbon nanotube sheets. At the maximum achieved brightness of 2800cdm^-2 the luminance efficiency of our carbon nanotube-based OLED is 1.4cdA^-1 which is comparable to the 1.9cdA^-1 measured for an optimized indium tin oxide anode device made under the same experimental conditions. A thin parylene buffer layer between the carbon nanotube anode and the hole transport layer is required in order to readily achieve the measured performance.