Photonic and Electronic Power Devices

In the research topic "Photonic and Power Electronic Components", we develop special photovoltaic cells and other photonic, optoelectronic and power electronic devices for applications beyond traditional solar cells. These include, for example, photonic power converters for laser light (also known as laser power converters, optical power converters or phototransducers), thermophotovoltaic cells for converting thermal radiation, indoor photovoltaic cells, special power diodes or detectors. In 2021, we achieved an efficiency of 68.9%, the highest value to date for the conversion of light into electricity.

Our research focuses on the model-based design of devices, taking into account optical, electrical and thermal properties, for example to develop advanced cell concepts with increased output voltage, optimization for special spectra (laser, LED, artificial room light, thermal radiation from hot emitters), or high breakdown voltage. Using metal-organic vapor phase epitaxy (MOVPE), we develop complex layer structures, absorber materials with adapted band gaps, transparent tunnel diodes, and processes for rapid growth. We process epi-wafers into functional devices and develop thin-film processes for the integration and optimization of electrically conductive mirror layers. For the development of prototypes, we work on assembly and connection technologies for mechanical assembly, electrical contacting, optical coupling and thermal connection, and test modules for reliability in operation. 

We are globally connected with excellent research groups and offer customer-oriented solutions for small and medium-sized enterprises, start-ups and large industrial companies. Our repertoire includes production design and prototypes as well as pilot and small series.