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DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Modeling and Simulation ITWG Jürgen Lorenz – Fraunhofer IISB – chairperson M&S ITWG ITWG Members.

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Presentation on theme: "DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Modeling and Simulation ITWG Jürgen Lorenz – Fraunhofer IISB – chairperson M&S ITWG ITWG Members."— Presentation transcript:

1 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Modeling and Simulation ITWG Jürgen Lorenz – Fraunhofer IISB – chairperson M&S ITWG ITWG Members /attendees in meeting H. Jaouen, STM * W. Molzer, Infineon * R. Woltjer, Philips * J. Lorenz, Fraunhofer IISB * + 8 further TWG members * * : supported by EC User Group SUGERT T. Wada, SELETE S. Sato, Fujitsu Japanese TWG 15 industrial members W. Trybula, SEMATECH V. Singh, INTEL I. Bork, Synopsys + 6 further TWG members J.-H. Choi, Hynix K. Lee, Samsung Y.T. Chia, TSMC T. Wang, Faraday

2 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Equipment related Equipment/Feature scale Modeling Lithography Modeling Feature scale Front End Process Modeling Device Modeling Interconnects and Integrated Passives Modeling IC-scale Circuit ElementsModeling Package Simulation Materials Modeling Numerical Methods DFM / DFY 2005 Modeling&Simulation SCOPE & SCALES Modeling Overall Goal Support technology development and optimization Reduce development times and costs - explain cost reduction estimate

3 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Key Messages (I) Mission of Modeling and Simulation as cross-cut topic: Support areas covered by other (especially focus) ITWGs In-depth analysis of M&S needs of other ITWGs performed, based on documents + inter-ITWG discussions Modeling and simulation provides an embodiment of knowledge and understanding. It is a tool for technology/device development and optimization and also for training/education Technology modeling and simulation is one of a few enabling methodologies that can accelerate development times and reduce development costs: Assessment up to 35% already in 2003 (when simulation is used efficiently) important not only in years of difficult economic conditions

4 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Key Messages (II) Art of modeling: - Combine dedicated experiments & theory to extract physical mechanisms & parameters - Find appropriate trade-off between detailed physical simulation (CPU and memory costly) and simplified but physically appropriate approaches Accurate experimental characterization methods are essential Reliable experimental reference data required on all levels – profiles, electrical data, ….. – must partly be provided e.g. by device makers! Further growing importance of atomistic/materials/hierarchical/multilevel simulation - appropriate treatment of nanostructures Invitation for extended participation esp. from Korea and Taiwan

5 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Crosscuts between M&S and other ITWGs Detailed analysis of other ITRS chapters + discussions with other ITWGs as basis for 2003 M&S challenges and requirements tables, and text This process continued in emphasis on tables – and in 2005 Crosscuts with focal ITWGs and other cross-cut ITWG being described in detail Links with ALL other ITWGs. Some examples: Design: Influence of process fluctuations, intrinsic statistics, noise, reliability,... on design Test: Extension of interconnect simulation towards simulation of test equipment PIDS: Long list including modeling of new materials and new device architectures, atomistic/quantum mechanical simulation, fluctuations and variations, coupled device/circuit/system simulation

6 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Crosscuts between M&S and other ITWGs (cont.) Some examples (cont.): FEP: Long list including modeling of material issues, new device architectures, ultra-shallow junctions and defect engineering, assessment of process variants Lithography: Push limits of optical lithography by optimization of options; assessment of Next Generation Lithography based on predictive physical models (e.g. efficient solution of Maxwell equations) Interconnects: Large range of M&S support needed, from prediction of material properties (e.g. resistivity of narrow Cu lines) to impact of non-idealized interconnects on IC layout Factory Int.:Support shrink of technology implemented in fab line, by equipment/process/device/circuit simulation. Assess impact of process variations on yield

7 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Crosscuts between M&S and other ITWGs (cont.) Some examples (cont.): Assembly and Packaging: Co-design issues: Chip and package, mechanical/electrical/thermal simulation ESH: Bi-directional link w.r.t characterization and models for gas composition and chemical reactions Yield Enhancement: Simulation influence of defects and of process fluctuations on devices/ICs/yield Metrology: M&S needs advanced metrology for development/ assessment of physical models. Physical modeling to support metrology e.g. w.r.t. linking measured spectra to gas composition, interpretation of measured data, extension of measurements from 2D to 3D

8 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Basic Approach and Focus of 2005 Work 1)Detailed cross-cuts worked out in 2003 – regularly updated together with other ITWGs 2)Tables strongly revised in 2004 – in 2005 mainly adaptations in timing and some updates 3)Rewrite of text, based on 2004/2005 changes of crosscuts and tables, and state-of-the-art Involve subchapter editing teams which should consist of representatives from each region (achieved: 3 to 5) 4)2005 changes in chapter structure on the way: Elaborate on cost savings estimate Add new subchapter on TCAD for DFM / DFY

9 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Difficult Challenges 32 nm

10 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Difficult Challenges 32 nm

11 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Needs Efficient extraction and simulation of full-chip interconnect delay and power consumption Accurate and yet efficient 3D interconnect models, esp. for transmission lines and S-parameters Extension of physical device models to III/V materials High-frequency circuit models including non-quasi- static effects, substrate noise, 1/f noise and parasitic coupling Parameter extraction assisted by numerical electrical simulation instead of RF measurement Scalable active and passive component models for circuit simulation Co-design between interconnects and packaging Draft 2005 Short-term Difficult Challenges High-Frequency Device and Circuit Modeling for Ghz Applications (From Philips)

12 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Short-Term Difficult Challenges Front-End Process Modeling for Nanometer Structures Needs Diffusion/activation/damage/stress models and parameters incl. SPER and low thermal budget processes in Si-based substrate, e.g. Si, SiGe:C, GE, SOI, epilayers and ultra-thin body devices Modeling of epitaxially grown layers: Shape, morphology, stress Characterization tools/methodologies for these ultra-shallow geometries/ junctions and low dopant levels Modeling hierarchy from atomistic to continuum for dopants and defects in bulk and at interfaces Front-end processing impact on reliability Source: A. Claverie, CEMES/CNRS, Toulouse, France

13 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Short-Term Difficult Challenges Integrated Modeling of Equipment, Materials, Feature Scale Processes and Influences on Devices Needs Fundamental physical data ( e.g. rate constants, cross sections, surface chemistry for ULK, photoresists and high-k metal gate); reaction mechanisms and simplified but physical models for complex chemistry and plasma reaction Linked equipment/feature scale models (including high-k metal gate integration, damage prediction) CMP (full wafer and chip level, pattern dependent effects) MOCVD, PECVD and ALD, electroplating and electroless deposition modeling Multi-generation equipment/wafer models Simulated across- wafer variation of feature profile for a sputter-deposited barrier. (From Fraunhofer IISB)

14 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Short-Term Difficult Challenges Lithography Simulation including NGL Needs Optical simulation of resolution enhancement techniques including mask optimization (OPC,PSM) Predictive resist models (e.g. mesoscale models) incl. line-edge roughness, etch resistance, adhesion, and mechanical stability Methods to easily calibrate resist model kinetic and transport parameters Models that bridge requirements of OPC (speed) and process development (predictive) Experimental verification and simulation of ultra- high NA vector models, including polarization effects from the mask and the imaging system Models and experimental verification of non-optical immersion lithography effects (e.g. topography and change of refractive index distribution) Multi-generation lithography system models Simulation of defect influences / defect printing Modeling lifetime effects of equipment and masks Printing of defect on phase-shift mask: bump defect (top) vs. etch defect (lower) (From Fraunhofer IISB)

15 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Short-Term Difficult Challenges Ultimate Nanoscale CMOS Simulation Capability Needs Methods and algorithms that contribute to prediction of CMOS limits General, accurate and computationally efficient quantum based simulators Models and analysis to enable design and evaluation of devices and architec- tures beyond traditional planar CMOS Gate stack models for ultra-thin dielectrics Models for device impact of statistical fluctuations in structures and dopant distributions Material models for stress engineering. Physical models for stress induced device performance courtesy Infineon / TU Munich Quantum-mechanical vs. classical carrier densitiy in double-gate transistor drain source quantum classical courtesy Infineon / TU Munich

16 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Short-Term Difficult Challenges Thermal-Mechanical-Electrical Modeling for Interconnects and Packaging Needs Model thermal-mechanical, thermo- dynamic and electronic properties of low-k, high-k and conductors for efficient in-chip package layout and power management, and the impact of processing on these properties especially for interfaces and films under 1 micron Model reliability of packages and interconnects, e.g. stress voiding, electromigration, piezoelectric effects; textures, fracture, adhesion Models for electron transport in ultra fine patterned conductors Temperature distribution in an interconnect structure courtesy TU Vienna / IST project MULSIC

17 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Draft 2005 Difficult Challenges < 32 nm

18 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Requirement Tables: 2005 Changes General: Short-and long-term requirements combined into one table Items adapted to 2 years passed since 2003 ITRS & changes in requirements/ technical progress 2003 and 2004 information checked – partly requirements met, partly the influence 2005 etc. Table continues to contain some items in zebra colour - according to ITRS guidelines: Limitations of available solutions will not delay the start of production. In some cases, work-arounds will be initially employed. Subsequent improvement is expected to close any gaps for production performance in areas such as process control, yield, and productivity. This means for simulation: It can be used, but with more calibration, larger CPU time/memory, less generality then in the end required...

19 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 Requirement Tables: 2005 Changes Main changes in line headers: New structure for Numerical device modeling: no more separation between Classical CMOS and Non-classical CMOS, but now between Transport modeling and Additional requirements for non-classical CMOS In Numerical Analysis, new line for Meshing Changes in line items Several details changed in content and timing

20 DRAFT – Work In Progress - NOT FOR PUBLICATION 13 July 2005 More details given in tables & ITRS text Thank you


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