Organic light emitting diodes (OLEDs) have drawn great attention in the past two (plus) decades. Ever since the influential and groundbreaking work by Tang and Van Slyke LEDs have been viewed as the next generation flat panel display (FPD) technology as they offer several advantages for self-emitting displays, such as a wide viewing angle (almost 180 °), a thin panel (< 2 mm), light weight, a fast response time (microseconds and less), bright emission, and high contrast. Moreover, they can be made on flexible substrates, and are thus highly versatile. In reality, OLEDs have already been incorporated into some commercial products, like MP3 players, mobile phones, digital cameras, PDAs, etc.
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Materials Today (2011) 14(10), 472-479