Gizachew Y. Tesfay (Phd) Email & Phone Number

Limoges, Fr

Paris, Île-De-France, France

Limoges, Nouvelle-Aquitaine, France

Limoges

1) Functional ink Chemistry (ink formulation, characterization and reformulation);2) Surface Chemistry (Characterizing and modifying the Physicochemicalcharacteristics of substrates/bottom layer);3) InkJet printing technology and device fabrication on flexible substrates§.

Grenoble Area, France

# Research & development engineer in Processing Printed Functional Materials @ CEA Grenoble- Formulating, Optimizing and reformulation of Functional inks (Metallic and Metal Oxide Materials, nanoparticles, Small organic molecules, Polymers and Piezoelectric materials) for various printheads platforms and different applications (polymer-based organic photovoltaic cells, Thin film transistors, OPD, Memories…). - Characterizing the Physico-chemical characteristics of substrates/bottom layer, and Modifying Physico-chemical properties of substrates/bottom layer - Hands-on experience on different inkjet machines (Dimatix material printer DMP-2800, DOD IJ IMPIKA, OMNIJET-500), and on different print-head architecture (DMC-11610 Print head, Galaxy JA 256/30 AAA, Q-Class Printhead, SX3 Print head).- Optimizing the printing parameters and processes, and Characterizing Functional ink.

Marseille Area, France

Phd subject: “Inkjet printing technology as a fabrication tool for Inorganic and Organic photovoltaic cells.”Goal: 1) to replace screen printing (serigraphic) by optimizing drop–on-demand (DOD) piezoelectric inkjet printing for front - side metallization of Si solar cells. 2) to adopt and tailor inkjet printing for patterning thin-film layers (such as PEDOT:PSS, active layers…) of organic photovoltaic cells. The following topics were the focus of my research project: - Select and choose functional inks from the market based on compatibility and performance criteria of the print-head dynamics. - Optimize printing and post-treatment parameters such as jetting parameters, drop-substrate interaction, , surface energy modification, surface patterning, drying time and curing process to achieve highly functional patterns ( such as conductive lines, low contact resistance) good adhesion, and high resolution. - Demonstrating/optimizing clear analytical characterization techniques to study the inks and the printing conditions (such as visualization of drop formation and jetting, measuring accuracy and repeatability, ink-substrate interaction characterization). - Electro-optical characterization of printed components in order to understand and measure the impact of optimized and implemented parameters (this includes infrared thermograph (IRT), Micromeasure2 surface topography, optical profilometer, mechanical profilometer, four point resistance measurement, scanning electron microscope, XDS elemental analysis, etc.).Director of the thesis: Prof. Dr. Ludovic EscoubasCo-directors: Dr. Jean-Jacques Simon, Project: PV Print project: “Development of industrial printing machine and process, for crystalline and polymeric photovoltaic panel production line”. Coordinators: Mondragon Assembly and IMPIKA

Mekelle, Ethipia

Assistant Lecturer and Extension undergraduate program coordinator - Teaching Introduction Inorganic chemistry for geology undergraduate year I students. - Teaching practical organic chemistry I, practical analytical chemistry I and practical inorganic chemistry I for chemistry, Biology and Pharmacy undergraduate students. - Teaching Introduction to organic chemistry and practical instrumental chemistry for 2nd and 3rd year undergraduate chemistry students. - Teaching Introduction to organic chemistry and Introduction to analytical chemistry in par time base for junior pharmacy student and senior Nurse Students at one of governmental health institute.

Ph.D. In Micro- And Nano-Electronics, Inkjet Printing Technology As A Fabrication Tool For Inorganic And Organic Photovoltaic Cells., Graduation With Great Distinction

Activities and Societies: University of Paul Cezanne – Aix- Marseille 3 (France) Laboratory: IM2NP (Materials Microelectronics.

Master Of Science (Msc), Molecular Nano- And Bio-Photonics For Telecommunications And Biotechnology, Good

Bachelor'S Degree In Chemistry, Majoring In Chemistry And Minoring In Physics