Universal Reliability Modeling from the Defect Centric Perspective: A Pipe-Dream?
There is a wide range of reliability mechanisms that have so far plagued semiconductor devices, starting with irradiation damage, hot carrier injection, bias temperature instabilities, noise, and oxide breakdown. These phenomena have been studied over decades by different communities and for different material systems, such as conventional silicon technologies, SiC and GaN, as well as 2D materials. Various different models and explanations have been developed by these communities which involve essential players, such as point defects and their interaction with migrating hydrogen. Interestingly, the postulated physical properties of these players can vary widely between these models, clearly indicating serious inconsistencies. In this talk I will summarize the most important models for the main mechanisms, discuss their similarities and differences, and speculate on the possibility of developing a universal reliability model that provides an explanation for all these apparently diverse phenomena without resorting to contradictory assumptions on the physical properties of the involved players.
Prof. Tibor Grasser is an IEEE Fellow and head of the Institute for Microelectronics at TU Wien. He has edited various books, e.g. on the bias temperature instability, hot carrier degradation, and low-frequency noise (all with Springer), is a distinguished lecturer of the IEEE EDS, has been involved in outstanding conferences such as IEDM (General Chair 2021), IRPS, SISPAD (General Chair 2007), ESSDERC (Steering Committee Chair 2025/2026), and IIRW (General Chair 2014), is a recipient of the Best and Outstanding Paper Awards at IRPS (2008, 2010, 2012, 2014, and 2023), IPFA (2013 and 2014), ESREF (2008) and the IEEE EDS Paul Rappaport Award (2011). He was an Associate Editor for IEEE T-ED and Microelectronics Reliability (Elsevier).
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