The increasing relevance of hydrogen technology is reflected in various areas of industry. Hydrogen can be used in aerospace and transportation as an efficient fuel or in the energy sector. Efficient transportation and storage conditions are therefore necessary. Liquid hydrogen (LH2) has a much higher density (33.3 kWh/kg) compared to gaseous hydrogen (2.4 kWh/l), but special vacuum tanks and pipes with temperatures of -254°C are required and must be monitored with appropriate sensors. This is where the newly launched “CryoSense2R” research project comes in. In the predecessor project “CryoResistance”, the behavior of specially doped semiconductor resistors was investigated at these low temperatures.
The behavior of the doped semiconductor resistors could be derived directly from the charge carrier mobility and charge carrier concentration. These findings are the starting point for further investigations. The focus is now on further Hall measurements on buried resistors produced by high-energy implantation. This is useful for transistor structures that can still be used close to absolute zero and can be used, for example, to determine the temperature and monitor other physical parameters, especially of liquid hydrogen. The Faculty of Mechanical Engineering, Institute of Energy Technology, Schaufler Professorship for Refrigeration, Cryogenics and Compressor Technology at TU Dresden is involved in the new “CryoSense2R” project in the form of measurements. The layout and preparation of all semiconductor components required in this project are carried out at the CiS Research Institute. The aim of the project is to develop a redundant sensor system for temperature measurement in this cryogenic area.
The research and development work described above was funded by the Federal Ministry for Economic Affairs and Climate Action (BMWK) as part of the CryoSense2R research project.
Funding code: 49MF230124
