GTT-Technologies is a truly international company with people working from all around the world.


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Dr. Moritz to Baben

Dr. Moritz to Baben finished his diploma studies in Metallurgical Engineering at RWTH Aachen University in 2007. He did his PhD at Materials Chemistry (Prof. Jochen M. Schneider, RWTH Aachen University) in 2013 where he was also active in teaching materials chemistry classes and introduced video excercises and a virtual student's lab. He joined GTT-Technologies in 2016. Since October 2017 he is the Managing Director. Follow Moritz to Baben on ResearchGate

Dr. Stephan Petersen

Dr. Stephan Petersen graduated in Metallurgical Engineering at RWTH Aachen University in 1989. He started to work in thermochemistry as an undergraduate student at the Department of Theoretical Metallurgy (now Materials Chemistry) at RWTH Aachen University in the working groups of Dr. Philip Spencer and Dr. Klaus Hack. He subsequently joined the Institute of Solid State Research at Forschungszentrum Jülich, where he worked on high-pressure solution growth and defect thermochemistry of gallium-arsenide. This formed the basis for his Ph.D. degree, which he received in 1994. He joined GTT-Technologies in 1992 and is the Managing Director since April 2018.


KH Photo

Prof. Dr. Klaus Hack

Dr. Klaus Hack graduated in Physics from RWTH Aachen University, Germany. He started working in thermochemistry while undertaking research for his diploma (high temperature mass spectrometry on ternary alloys) and continued in this field with his doctoral work (adiabatic high temperature calorimetry on ternary alloys). During his postdoctoral work at National Physical Laboratory, UK, he carried out assessments of boron-metal systems and also developed software for the assessment and calculation of binary and higher order substitutional solution properties. He was the Managing Director for more than 20 years and is still active as Senior Consultant. Follow Klaus Hack on ResearchGate