OLEDs, known as organic light-emitting diodes, are a kind of technology with emitting light flat developed by inserting thin film of organic compound between two conductors, for example, a carbon dioxide on the principle of electro phosphorescence for converting electric energy into light energy in a very effective way. OLEDs technology, which is convenient for collecting more attraction of end users, is bright, lighter, thinner, more energy efficient and offers a higher contrast than liquid

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... stal displays. It deals with wide-angle OLEDs watches, faster response time, high contrast ratio and more saturation. The OLEDs is one of the bright lighting technologies, capable of delivering more efficient and better lighting compared to the incandescent bulbs of this fluorescent lamp. The primary goal of the work is to simulate and analyse the performance of OLEDs based on different structures and different layers, to analysis the performance of OLED by varying active layer material and to compare performance of the various OLEDs structures based on performance parameters.