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Professor
PIERO COSSEDDU (Tit.)
Period
Second Semester 
Teaching style
Convenzionale 
Lingua Insegnamento
 



Informazioni aggiuntive

Course Curriculum CFU Length(h)
[70/83]  ELECTRONIC ENGINEERING [83/00 - Ord. 2016]  PERCORSO COMUNE 7 70

Objectives

Development of basic knowledge of innovative technologies in the field of microelectronics, and in particlar of organic electronics
Development of the ability of fabrication and electrical charactierization of organic semiconductor based electronic devices
Development of the ability of clearly exaplain the different concepts learned during the course

Prerequisites

Physics, Physics of Solid State and Electronic Devices are mandatory in order to succesfully attend the course

Contents

Review of MOSFET devices
CMOS Deep SubMicrometer (DSM) technlogy: technological approaches and related issues
Scaling rules for MOSFETs: Constant field scaling, constant voltage scaling, constant frequency scaling.
Issues related to MOSFETs scaling and technological solutions: threshold voltage roll-off, charge sharing, Drain-induced barrier lowering (DIBL), Punch Through, mobility degradation, velocity saturation, channel length modulation, Hot carrier effect, Tunneling through gate oxide.
Introduction on Organic Electronics: organic chemistry, Carbon atom, molecular orbitals
Physics of Organic Semiconductors: Charge transport in organic aterials; inorganic semiconductors vs organic semiconductors
Charge Transport in Organic Semiconductors: Models for charge transport; Correlation between morphology and electrical properties in organic materials; small moleculs and polymers
Organic Field effect Transistor (OFET): working principle and main differences with MOSFETs; Structures and materin idealities in OFETs: the role of interfaces, metal/semiconductor and insulator/semiconductor; Contact Resistance, Hysteresis and bias Stress in OFETs
Alternative configurations: SIT, OECT, EGOFET, self aligned OFET
Electrical charaterization: Instrumentation for electrical characterization; Measuring methods and electricl parameters extraction; Theory of Measurements and Errors
Ambipolar OFETs: Working principles and architectures
OFETs Applications: Display, Bio-chemical Sensors, Physical Sensors, Imagers
Logic GAtes: Inverters, NAND and NOR, Ring Oscillators
Fabrication Technologies: Deposition from vapor phase; Deposition from liquid phase
Patterning Techniques: Inkjet Printing, Soft lithography, Photolithograpy
Morphological Characterization: SEM, FIB, STM, AFM
Organic Semiconductor-based Memory Elements: OFET-based Memories; Resistive Memories

Teaching Methods

The course will be organized as follows:
40 hours of lectures on the previously reported arguments
30 hours of lab experiences, organized as follows:

- 4 hours Morphologica Characterization by means of Atomic Force Microscopy
- 10 hours of Fabrication Technologies for organic semiconductor-based electronic devices
- 5 hours Fabrication of OFETs by means of inkjet printing
- 4 hours of Electrical Characterization of Organic Electronic Devices and results analysis
- 6 hours of electrical characterization of organic semiconductor-based sensors

Verification of learning

The final exam will consist in a written examination and a presentation of a thesis.
The thesis can be made alone or in team, and will be focused on one of the arguments touched during the course
The final marks will depend on:
- Written exam marks
- Thesis Quality
- Ability of the student to report about all the course arguments and also about the information reported in the thesis during the final presentation

Texts

Molecular Electronics From Principles to Practice
Michael C. Petty
John Wiley and Sons LTD
ISBN: 978-0-470-01307-6

Organic Field Effect Transistors
Theory, Fabrication and Characterization
Ioannis Kymissis
Springer
ISBN 978-1-4419-4711-6

Dispense del Corso

More Information

Before each lesson, students will be given all the slides touching the arguments will be explained during the lesson.
Moreover, some articles will be also provided for allowing a deeper understanding of some specific research subjects.

Questionnaire and social

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