Kevin Nadaud;Zihao Lyu;Daniel Alquier;Quentin Paoli;Julien Ladroue;Arnaud Yvon;Eric Frayssinet;Yvon Cordier;Jérôme Billoué
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引用次数: 0
Abstract
In this article, we propose a high-frequency model taking into account the series resistance of pseudo-vertical gallium nitride (GaN)-based p-i-n diodes. This model relies on the specific contact resistance on p-type GaN and the sheet resistance of the bottom n-type GaN. Those two quantities are obtained while fitting the RF experimental data and are slightly different from the dc values. The interest of this model is that the effective values, at the working frequency instead of “only” the dc values, are extracted using only a few devices. The novelty of the work resides in the consideration of the geometrical dimensions of the diode (anode radius and distance between anode and cathode) in the model. Furthermore, the model allows the determination of the most limiting geometrical parameters and can predict the series resistance of other topologies. In the present case, we show the most limiting factor is the radius of the anode due to the difficulties of achieving low specific contact resistance on p-type GaN. The parasitic capacitance is also extracted using the measured devices, allowing the modeling of the effective capacitance as a function of the frequency.
期刊介绍:
IEEE Transactions on Electron Devices publishes original and significant contributions relating to the theory, modeling, design, performance and reliability of electron and ion integrated circuit devices and interconnects, involving insulators, metals, organic materials, micro-plasmas, semiconductors, quantum-effect structures, vacuum devices, and emerging materials with applications in bioelectronics, biomedical electronics, computation, communications, displays, microelectromechanics, imaging, micro-actuators, nanoelectronics, optoelectronics, photovoltaics, power ICs and micro-sensors. Tutorial and review papers on these subjects are also published and occasional special issues appear to present a collection of papers which treat particular areas in more depth and breadth.