1999•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
Investigation and application of the buried-layer van der Pauw and bar resistors
Keith Findlater, Martin Fallon, Mark Redford
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Abstract
Sheet resistance measurements are often used as process control monitors and are a key part of resistor measurements for SPICE models. These are normally Ohmic in nature. However it can be seen that buried layer resistors are strongly affected by the applied bias conditions in a similar mode to JFET operation. Two standard resistor structures have been studied to investigate this effect: the bar resistor and the van der Pauw, 2D and 3D-device simulation have been used to model the self-modulation and to produce recommendations for optimized routine measurement.