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Work Group Photovoltaic Systems

Scientific profile

The development, production and characterization of semiconductor thin films and nanostructures, especially on the basis of silicon and transparent conductive oxides, for novel devices such as optical sensors and solar cells on various substrate materials characterizes the profile of the Photovoltaic Systems working group.

The goal is the development and application of scalable technologies for the production and modification of novel semiconductor thin films and thin film systems, including nanostructured surfaces, for a broad range of applications, especially in medical and environmental technology and in the field of security.

The basis is a broad spectrum of coating processes such as CVD, PECVD, electron beam evaporation, sputtering, ALD and inkjet printing as well as wet-chemical deposition methods. Combined with laser processes and wet chemical etching, thin film systems and structures as well as functional surfaces with special properties for sensory applications and power generation are obtained.

Laser crystallized silicon thin film
Thin-film solar cells on textiles
Silicon nanowire array with core-shell structure

Research topics

  • Laser crystallization, doping and modification of silicon thin films
  • Nanostructuring of surfaces for effective light scattering and absorption
  • Thin-film solar cells on textiles and other substrates (glass & low-cost wafers & foils)
  • Functional coatings of single fibres, fabrics and textile composites
  • Detector concepts of silicon nanowire arrays with core-shell structures
  • Laser processes for tailor-made nanoparticles made of metal alloys

The research topics of the Photovoltaic Systems working group are scientifically based on solid state physics, light-matter interactions and nanotechnology. For the technological implementation, the working group can draw on various laser systems and various coating and structuring processes.

Laser-processed nanoparticles of metal alloys

Application fields

  • Energy generation and energy self-sufficient systems
  • Smart Textiles and e-Textiles
  • Optical detection systems and security applications
  • High-performance image sensors for light, radiation and particles
  • Nanoparticles for plasmonic and catalytic applications

The broad application spectrum of the Photovoltaic Systems working group addresses in particular questions in the field of environmental and medical technology as well as in the field of safety.

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