14-03-2012, 11:44 PM
i want report on oled so that i can make my report impressive.
also tell me the what is organic tv?
14-03-2012, 11:44 PM
i want report on oled so that i can make my report impressive. also tell me the what is organic tv?
15-03-2012, 10:06 AM
to get information about the topic "organic light emitting diode " full report ppt and related topic refer the link bellow
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21-08-2012, 04:30 PM
Organic Light Emitting Diodes(OLEDs)
sun Organic Light Emitting Diodes.ppt (Size: 2.31 MB / Downloads: 38) What is Organic LED…. Organic light emitting diodes are optoelectronic devices based on small molecules or polymers that emit light when an electric current flows through them. Construction of OLED…. OLED consists of a fluorescent organic layer sandwiched between two metal electrodes. An Organic LED is a light emitting device whose p-n junction is made from an organic compound such as: Alq3 (Aluminum tris (8-hydroxyquinoline)) and diamine (TPD). Working principle…… When a voltage is applied to the electrodes the charges start moving in the device under the influence of the electric field. Electrons leave the cathode and holes move from the anode in opposite direction. The recombination of this charges leads to the creation of a photon with a frequency given by the energy gap (E = hν) between the LUMO and HOMO levels of the emitting molecules. Therefore, the electrical power applied to the electrodes is transformed into light. ADVANTAGES….. Very thin panel Low power consumption High brightness/ High contrast Wide visibility Quick response time Viewer order wide angle Self luminous Thinner than LCD No environmental drawbacks No power intake when turned off |
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