@article{MTMT:2654553, title = {Fast field solver for the simulation of large area OLEDs}, url = {https://m2.mtmt.hu/api/publication/2654553}, author = {Pohl, László and Kohári, Zsolt and Székely, Vladimir}, doi = {10.1016/j.mejo.2009.12.007}, journal-iso = {MICROELECTRON J}, journal = {MICROELECTRONICS JOURNAL}, volume = {41}, unique-id = {2654553}, issn = {0026-2692}, abstract = {Lighting purpose organic light-emitting devices need special engineering because of the high electrical and thermal requirements of the operation. Our electro-thermal field simulation software is better to satisfy these special demands than the widely used commercial tools. This article surveys the special simulation needs of lighting purpose OLEDs, presents the electro-thermal extension of the FDM-based SUNRED thermal field simulator and the significant algorithmic changes for speed up the program and make it more flexible. The simulation of an existing OLED closes the paper.}, year = {2010}, eissn = {0959-8324}, pages = {566-573}, orcid-numbers = {Pohl, László/0000-0003-2390-1381; Kohári, Zsolt/0000-0002-9908-6291} } @inproceedings{MTMT:2652850, title = {Electro-thermal modeling of large-surface OLED}, url = {https://m2.mtmt.hu/api/publication/2652850}, isbn = {9782355000096}, author = {Kollár, Ernő and Zólomy, Imre and Poppe, András}, booktitle = {DTIP 2009}, unique-id = {2652850}, abstract = {In our project the final purpose is to develop a cost-effective roll-to-roll technology of fabricating large-surface, high-output OLED (Organic Light Emitting Diode) devices for intelligent lighting applications. This paper presents the development of the electro-thermal model of OLED devices for circuit-level simulation. The model is based on the measuring of I-V characteristics at ten different temperatures. Our model describes the forward bias and the reverse bias of OLED devices between 5 degC and 50 degC. The actual initial model ignores the long-term stability problem.}, year = {2009}, pages = {239-242}, orcid-numbers = {Poppe, András/0000-0002-9381-6716} } @inproceedings{MTMT:2626537, title = {Electro-thermal investigation of OLEDs}, url = {https://m2.mtmt.hu/api/publication/2626537}, author = {Pohl, László and Kollár, Ernő and Kohári, Zsolt and Poppe, András}, booktitle = {Proceedings of the 14th International Workshop on THERMal INvestigation of ICs and Systems (THERMINIC'08)}, doi = {10.1109/THERMINIC.2008.4669915}, unique-id = {2626537}, abstract = {In our project the final goal is to develop the costeffective roll-to-roll technology of fabricating large area, high throughput OLED devices for intelligent lighting applications. The main achievements of the first six months of the project are described in this paper. An electro-thermal FDM simulator was developed on the basis of an existing thermal-only simulator. The simulations proved the necessity of building a shunting grid of high conductance at the transparent anode of the OLED device. The model validation technique and a method for the thermal qualification of the targeted device were also elaborated.}, year = {2008}, pages = {235-240}, orcid-numbers = {Pohl, László/0000-0003-2390-1381; Kohári, Zsolt/0000-0002-9908-6291; Poppe, András/0000-0002-9381-6716} }