Silvaco Group, Inc. · NASDAQ:SVCO
Silvaco — Technical Presentation (January 2023)
9 slides from Silvaco's technical presentation, January 2023
Slide 1: Radiation Effects Module
Radiation Effects Module Total Dose and Single Event Phenomenon, Damage Inducing and Elastic Interactions
Slide 2: Contents
Contents • Types of Radiation Effect • Single Event Effects • Total Dose Effects • Non Damage Inducing (Temporary) Effects • Direct Particle Damage Effects • Indirect Destructive Damage Effects • Conclusions ©2023 Silvaco, Inc. 2
Slide 3: Types of Radiation Effect
Types of Radiation Effect • Single Event Effects – A single particle creates a one time local ionized charge track • Total Dose Effects – The whole chip is exposed to radiation integrated over time • Non Damage Inducing Effects – The effects of the radiation are temporary • Direct Particle Damage Ef
Slide 4: Single Event Effects
Single Event Effects • Creates directional particle track of generated carriers • Calculate Weibull function curves, circuit event upsets etc. ©2023 Silvaco, Inc. 4
Slide 5: Total Dose Effects
Total Dose Effects • Unique, physically verified Silvaco model for x-ray/gamma radiation oxide hole trapping • Vt shift and radiation induced recovery, intra and inter device leakage • Create post radiation SPICE models using Utmost IV ©2023 Silvaco, Inc. 5
Slide 6: Non-Damage Inducing Effects
Non-Damage Inducing Effects • Non damage inducing effects result in a temporary loss of circuit functionality • These effects can be modelled purely in SmartSpice for worst case corner models, or in TCAD based “Mixed Mode” simulations, or purely TCAD simulations ©2023 Silvaco, Inc. 6
Slide 7: Direct Particle Damage Effects
Direct Particle Damage Effects • Direct particle damage occurs as a result of high mass particle such as protons, neutrons etc. • Crystal damage usually manifests as a reduction of free carrier lifetimes • Lifetime sensitive devices, such as bipolar transistors or image sensors can be severely effec
Slide 8: Indirect Destructive Damage Effects
Indirect Destructive Damage Effects • Destructive damage to a device can be triggered by radiation, but the energy for the destruction, comes from the circuit power supply • Gate oxides and high power/voltage devices are typically sensitive to such destruction ©2023 Silvaco, Inc. 8
Slide 9: Summary
Summary • Silvaco has solutions for most types of radiation effects • Simulations can be SPICE only, Mixed Mode or purely TCAD • Radiation effects can be included in SPICE model cards • Support for ease of use features such as SEU track meshing • DOE features for circuit sensitive capture cross sect
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