Optimization of electrothermal material parameters using inverse modeling [polysilicon fuse interconnects]

A method for determining higher order thermal coefficients for electrical and thermal properties of metallic interconnect materials used in semiconductor fabrication is presented. By applying inverse modeling on transient electrothermal three-dimensional finite element simulations the measurements of resistance over time of polysilicon fuse structures can be matched. This method is intended to be applied to the optimization of polysilicon fuses for reliability and speed.