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Simulating electronic and optical processes in multilayer organic light-emitting devices

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6 Author(s)
Ruhstaller, Beat ; IBM Zurich Res. Lab., Ruschlikon, Switzerland ; Beierlein, T. ; Riel, H. ; Karg, S.
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A detailed investigation of the device operation of a blue-emitting multilayer organic light-emitting device (OLED) using an electronic device model is presented. In particular, a transient electroluminescence overshoot at turn-on is found to originate from charge and recombination confinement effects at internal interfaces. The location of the emission zone is obtained from the electronic model and its experimental determination exemplified by a sensing layer method. Moreover, the optimization of emission intensity and color is discussed for a red-emitting OLED. The thin-film interference effects are analyzed with help of an optical device model.

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:9 ,  Issue: 3 )