@article{MTMT:3204967, title = {Thermoelectrical modelling and simulation of devices based on VO2}, url = {https://m2.mtmt.hu/api/publication/3204967}, author = {Pohl, László and Soma, Ur and Mizsei, János}, doi = {10.1016/j.microrel.2017.03.027}, journal-iso = {MICROELECTRON RELIAB}, journal = {MICROELECTRONICS RELIABILITY}, volume = {79}, unique-id = {3204967}, issn = {0026-2714}, abstract = {Limits of development of conventional silicon-based integrated circuits get closer. More and more effort is done to develop new devices for integrated circuits. A promising structure is based on the semiconductor-to-metal phase change of vanadium-dioxide at about 67 °C. In these circuits the information is carried by combined thermal and electrical currents. For device modelling and circuit design, accurate distributed electro-thermal transient simulation is mandatory. This paper is the first one to present an electro-thermal transient simulation method for VO2 devices operating in real-world conditions. The paper presents three VO2 material models, the algorithmic extension of an electro-thermal field simulator to be able to handle hysteresis and the transient simulation issues of VO2 and the modelling of VO2 based devices. The paper compares measured and simulated device characteristics.}, year = {2017}, eissn = {1872-941X}, pages = {387-394}, orcid-numbers = {Pohl, László/0000-0003-2390-1381; Mizsei, János/0000-0003-3411-1502} } @article{MTMT:2908301, title = {Advancing the thermal stability of 3D ICs using logi-thermal simulation}, url = {https://m2.mtmt.hu/api/publication/2908301}, author = {Nagy, Gergely and Horváth, Péter and Pohl, László and Poppe, András}, doi = {10.1016/j.mejo.2015.06.025}, journal-iso = {MICROELECTRON J}, journal = {MICROELECTRONICS JOURNAL}, volume = {46}, unique-id = {2908301}, issn = {0959-8324}, year = {2015}, eissn = {1879-2391}, pages = {1114-1120}, orcid-numbers = {Horváth, Péter/0009-0006-0097-259X; Pohl, László/0000-0003-2390-1381; Poppe, András/0000-0002-9381-6716} } @inproceedings{MTMT:2698758, title = {Thermal-Electronic Integrated Logic}, url = {https://m2.mtmt.hu/api/publication/2698758}, author = {Mizsei, János and Jyrki, Lappalainen and Bein, Márton}, booktitle = {19th International Workshop on THERMal INvestigation of ICs and Systems (THERMINIC 2013)}, doi = {10.1109/THERMINIC.2013.6675249}, unique-id = {2698758}, year = {2013}, pages = {128-134}, orcid-numbers = {Mizsei, János/0000-0003-3411-1502} } @inproceedings{MTMT:2668775, title = {Contracting Current Paths in Vanadium Dioxide Thin Films}, url = {https://m2.mtmt.hu/api/publication/2668775}, author = {Bein, Márton and Mizsei, János}, booktitle = {Proceedings of the 17th International Workshop on THERMal INvestigation of ICs and Systems (THERMINIC'11)}, unique-id = {2668775}, abstract = {Vanadium dioxide (VO2) has been extensively investigated due to its thermal-induced metal-insulator transition (MIT) at about 67 oC; which can be lowered by doping. During the transition from semiconductor to metallic phase electrical conductivity can increase by up to 3-4 orders of magnitude, while optical reflectance can drop by almost 50%. Possible applications include thermally controlled electrical and optical switches. As the thin film is conductive optical changes can be induced electrically by Joule-heating. In this paper we present electro-optical measurements carried out on 100 nm thick VO2 thin films deposited on sapphire substrates. Phase transitions were electrically induced in contacted films and observed using an optical microscope. Strong spatial inhomogeneity has been detected: a few micron wide dark path connected the two contacts. The visible channel is a metallic area within the semiconducting film as the domain undergoes a MIT because of the Joule-heat of the flowing current. The optically observable fine structure found suggests that VO2 thin films could be used to visualize isotherms with a resolution of a few microns, similar to that of liquid crystals. Possible benefits include the simple and reliable use of the once deposited solid phase precision films and a higher resolution compared to liquid crystal thermography.}, year = {2011}, pages = {66-69}, orcid-numbers = {Mizsei, János/0000-0003-3411-1502} }