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Optical emission from organic light-emitting diodes

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3 Author(s)
Epstein, A. ; Dept. of Electr. Eng., Technion - Israel Inst. of Technol., Haifa, Israel ; Tessler, N. ; Einziger, P.D.

The results presented herein are associated with an analytical model for the electromagnetic radiation emitted from a nanometric organic light-emitting diode (OLED) device. This is obtained via asymptotic evaluation of the resultant radiation integral in conjunction with coherence considerations, resulting in closed-form analytical expressions. For the sake of simplicity and clarity, we focus on a two-dimensional prototype model excited by an impulsive (line) source. The resultant expressions can be most effectively utilized by engineers for improved design, as they enable the calculation of the device¿s physical parameters, such as electrical to optical conversion efficiency and emission angular distribution, as a function of device structure. It should be pointed out that the incorporation of both rigorous electromagnetic analysis and coherence effects is addressed in our report, to the best of our knowledge, for the first time. This results in a precise model capable of repeating and interpreting experimental and simulated data.

Published in:

Electrical and Electronics Engineers in Israel, 2008. IEEEI 2008. IEEE 25th Convention of

Date of Conference:

3-5 Dec. 2008