Project and Thesis Folder - TU Wien · TU Vienna, Gußhausstraße 27-29/E360 1040 Vienna, Austria...

Institute for MicroelectronicsTU Vienna, Gußhausstraße 27-29/E3601040 Vienna, Austria

Project and Thesis Folder

• Pillars of Institute for Microelectronics:• Teaching: Programming in C

• Device Simulation: Simulation of semiconductor devices

• Experimental: Development of measurement equipment

• Unique chance to improve teaching quality and scientific research

• Optional lectures:• 360.238 Experimental Characterization of Semiconductor Devices

• 360.206 Programmierpraktikum

• Bachelor Thesis

• Master Thesis


PCB and Circuit Design forDefect Probing Environment (1)

Supervisor:Michael Waltl

Contact:[email protected]

• Electrical characterization of MOSEFTs

• Custom-made instrument developed at IUE

• Modular design

• Controlled by measurement Computer

• Hardware- and Software development

• Tasks:• Further enhancement of single modules• Developing new modules

• Required Knowledge:• Experience with circuit and PCB design• Programming C/C++, Microcontroller

mailto:[email protected]


PCB and Circuit Design forDefect Probing Environment(2)



• Enhance sampling rate of data acquisition unit• Selection of new analog to digital converter

• PCB design and assembling

• Adjust Software

• Introduce newer and faster microprocessor into measurement system• Port and optimize microprocessor firmware

• Testing by performing measurements

• Redesign of current to voltage converter unit• Enhance design and functionality of existing unit

• PCB design, assembling and testing

• Adjust software

• Porting from Eagle CAD to OrCAD• Create footprints and libraries

• Setup Spice simulations of circuit components

Projects MW2-MW5



Enhanced Jobserver for Control ofthe Defect Probing Framework



Project MW6

• One measurement setup per MOSFET

• Many MOSFETs measured in parallel

• Jobserver controls• Measurement sequences• Peripherie

• Jobserver uses sqlite database

• Tasks:• Redesign of Jobserver• Add SMS Service• Possibility for on-the-fly monitoring

• Required Knowledge:• Programming with Python



Webinterface to Control Defect Probing Environment



• Jobserver controls measurements

• Executed on measurement PC

• No GUI available to control measurements

• Tasks:• Requirements Definition

• Design of Webinterface

• Suitable for PC an mobile devices

• Required Knowledge:• Programming with Python

• Developing of webpages (Django)

Project MW7



Modeling Stress in Thin Metal Interconnects

• Modeling stress during metal growth gives insight into essential material properties

• Currently, 2D simulations are used, but an extension to 3D is desired

• Tasks

• Introduce 3D to an existing 2D code

• Use VTK libraries to export the structure

• Required knowledge

• Programming in C/C++

• Use of external libraries (i.e. VTK toolkit)

Supervisor:Lado Filipovic


Project LF1



Modeling Changes in Metal Microstructureduring Annealing and Self-Heating



Project LF2

• Metals change their structure during high-temperature annealing

• Self-heating can also lead to changes in the grain structure

• Microstructure evolution can besimulated using the Potts model

• Tasks• Implement the Potts model to

simulate grain structure evolution

• Required knowledge• Programming in C/C++

• Some knowledge in metal microstructure



Analysis of Heat Distribution in Microhotplates

• Microheaters are essential components in many applications:• Gas sensors, fingerprint sensors, infrared emitters, fuel cells …

• It is desired that the temperature distributes evenly along the surface

• High thermal gradients are bad for the device and its reliability

• Tasks• Model thermal distribution using a

finite element software• Test various designs to minimize the

thermal gradient in the device

• Required knowledge• Programming in C++ and using external libraries• Some knowledge in finite element methods



Project LF3



Design a File Format for a Level Set Data Structure in ViennaTS

• The Level Set Method is a framework to implicitly define a topology

• It is frequently used in imaging and in computer animation

• In our code, a hierarchical-run length encoded data structure is implemented

• Tasks

• Design a file format suitable for the Level Set data structure

• Implement an import/export mechanism in the current Level Set code





Project LF4



Web Interface / GUI for a Metal Stress Simulator

• We have a topography simulator, which is used to model semiconductor processing steps like etching and deposition (ViennaTS)

• Tasks

• A GUI interface for the simulator

• A web interface for the process simulator


• Programming in C++

• Experience in:

• Web development

• Python and/or Qt



Project LF5-LF6



Web Interface / GUI for a Metal Stress Simulator

• We have a simulator which models the stress during metal growth

• The simulator can handle a variety of metals and properties

• Tasks

• A GUI interface for the simulator

• A web interface for the stress simulator



• Experience in:

• Web development

• Python and/or Qt



Project LF7-LF8



Tracking Electrons in Copper Wires

• We have a software tool written in C which tracks how electrons move in different materials, such as silicon or copper

• The software is currently a small part in a larger code framework, but we want to make it an independent code

• Tasks

• Implement models for electron motion in C

• Make a new software tool from existing code

• Test the model for various geometries


• Programming in C

• Some knowledge inmetal microstructure



Project LF9



Analysis and Optimization of Nested Meshes forAdaptive Mesh Refinement

Supervisor:Josef Weinbub

Contact:[email protected] 01-58801-36053

• Adaptive mesh refinement allows to locally increase the mesh resolution

• Key to success is placement of nested meshes

• Tasks

• Analysis of available implementation: mesh criteria and point generation

• Devising an optimized approach to increase quality and minimize points

• Requirements

• Programming in C++ under GNU/Linux

• Basic experiences in numerical methods or data structures

• Exposure to structured meshes is a plus

More Information: http://www.iue.tuwien.ac.at/hptcad/open-positions/masters-thesis-on-analysis-and-optimization-of-nested-meshes-for-adaptive-mesh-refinement/

Join the HPTCAD-Team: http://www.iue.tuwien.ac.at/hptcad/


http://www.iue.tuwien.ac.at/hptcad/open-positions/masters-thesis-on-analysis-and-optimization-of-nested-meshes-for-adaptive-mesh-refinement/index.html

http://www.iue.tuwien.ac.at/hptcad/index.html


Modeling of 2D Materials

• Improving existing models for Transistors based on 2D materials• Contact modeling• Device geometry

• Benchmarking of different approaches• 1D vs. 2D model• scattering dominated vs. ballistic models

• Device degradation• Defect location (dielectrics vs. interfaces)• Extraction of defect bands in different dielectrics

• Goal• Simulations describe measured characteristics

• Required Knowledge:• Programming with Python• Profound physical understanding

Supervisor:Theresia Knobloch


Projects TK1 – TK3



Modeling Hot Carrier Degradation (HCD)

• What is HCD:• Charge carriers in the channel can gain high kinetic energy and trigger the creation of

defects at the Si/SiO2 interface. To obtain the information how carriers are distributed over energy (energy distribution function), a full solution of the Boltzmann transport equation is needed. Combining a physics-based model and a state of the art device simulator enables us to gain insight into this degradation phenomenon

• Possible Projects:• Characterizing the variability of HCD

on a single defect level• Investigating different stress conditions

and transport modes• Open for other HCD related topics …..

• Required Knowledge:• Programming with Python/C++• (Basic) knowledge of device simulations (MEB)

Supervisor:Markus Jech


Project MJ1



Interplay of Degradation Mechanisms

• Project Goal:• Bias Temperature Instability (BTI) and Hot Carrier Degradation (HCD) are two major

device reliability issues. However, both degradation modes are usually described and characterized independently. The aim is to understand and model the interplay between BTI and HCD.

• Required Knowledge:• Programming with Python/C++

• (Basic) Knowledge of device simulations (MEB)

• Perform/improve measurements (optional)Supervisor:

Markus Jech


Project MJ2



Atomistic Simulations

• What is it about:• Ab-initio simulations on an atomistic level are needed to identify the properties of

defects. In this context, Density Functional Theory (DFT) is used to calculate e.g. the energetic position of defects, activation energies, ….. Due to the computational costs, DFT simulations are usually executed on the Vienna Scientific Cluster (VSC).

• Possible Projects:• Identifying Hydrogen related processes

• Characterizing emerging 2D materials

• Open for other topics …..

• Requirements:

• Solid physics knowledge/interest

• Postprocessing data (bash/python/...)

Supervisor:Markus Jech


Project MJ3


Project and Thesis Folder - TU Wien · TU Vienna, Gußhausstraße 27-29/E360 1040 Vienna, Austria...

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