Electromagnetic modeling of organic light-emitting devices
Journal
Journal of Lightwave Technology
Journal Volume
24
Journal Issue
6
Pages
2450-2457
Date Issued
2006
Author(s)
Chen, H. C.
Lee, J. H.
Shiau, C. C.
Yang, C. C.
Kiang, Y. W.
Abstract
Based on the rigorous electromagnetic wave theory, a numerical model for simulating the radiation characteristics of organic light-emitting devices (OLEDs) is developed. In particular, a novel method for overcoming the numerical difficulty in taking the thick glass substrate into account is proposed. The numerical results confirm the importance of the effects of the thick glass substrate. The algorithms based on the numerical model are then used for evaluating the dependencies of OLED radiation characteristics on various parameters, including the thickness of different device layers and the cathode metal variety. In the study of the effect of emission layer (EML) thickness, it is found that the radiation spectral peak red shifts with increasing EML thickness. This trend is consistent with the experimental result.
Type
journal article