Advanced Transport Models for Sub-Micrometer Devices

To overcome limitations of the classic drift-diffusion model, several higher-order transport models such as Stratton’s energy-balance model and Blotekjaer’s hydrodynamic model have been proposed. While for the drift-diffusion model the only transport parameter to be modeled correctly is the carrier mobility, there are many more significant parameters in higher-order models which cannot be directly taken from measurements. These parameters have to be chosen consistently, because otherwise the accuracy of the transport model cannot be properly assessed. Although a considerable number of parameter suggestions exists, it is not clear how well these models work when applied to submicron devices. Here we attempt a practical comparison as consistent as possible.