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OLED - Organic Light Emitting Diode

507 bytes added, 10:31, 16 February 2011
/* Working of OLED'S */
==Working of OLED'S==
*OLEDs emit light in a similar manner to LEDs, through a process called electrophosphorescence.
*The basic OLED cell structure consists process is as follows: #The battery or power supply of the device containing the OLED applies a stack of thin voltage across the OLED.#An electrical current flows from the cathode to the anode through the organic layers sandwiched between a transparent anode and (an electrical current is a metallic flow of electrons).** The cathodegives electrons to the emissive layer of organic molecules. ** The anode removes electrons from the conductive layer of organic layers comprise a hole-injection molecules. (This is the equivalent to giving electron holes to the conductive layer, a hole-transport layer, an .)#At the boundary between the emissive layer, and an the conductive layers, electrons find electron-transport layerholes. ** When an appropriate voltage electron finds an electron hole, the electron fills the hole (typically between 2 and 10 volts) is applied to it falls into an energy level of the cellatom that's missing an electron).** When this happens, the injected positive and negative charges recombine electron gives up energy in the emissive layer to produce form of a photon of light (electro luminescencesee How Light Works). # The structure OLED emits light.# The color of the organic layers and light depends on the choice type of anode and cathode are designed to maximize the recombination process organic molecule in the emissive layer, thus maximizing . Manufacturers place several types of organic films on the same OLED to make color displays.# The intensity or brightness of the light output from depends on the OLED deviceamount of electrical current applied: the more current, the brighter the light.
==OLED Types==
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