Experiments
- AG - astrophysics and geophysics
- BK - biophysics and complex systems
- FM - solid state physics and physics of materials
- KT - nuclear physics and particle physics
FM - solid state physics and physics of materials
- FM.ATE - Analytical Transmission Electron Microscopy of Self-organizing Nanocomposites
- FM.DIF - Diffusion in the solid
- FM.ERH - Recovery and Recrystallization of Aluminum
- FM.FMR - Ferromagnetic Resonance
- FM.HEU - High-harmonic Generation with an Ultrashort-Pulse Laser
- FM.LEE - Low-energy Electron Diffraction (LEED)
- FM.MBE - Molecular Beam Epitaxy and Growth Control by Electron Diffraction (RHEED)
- FM.MEC - Mechanical Behavior of Nanostructured Metals
- FM.MKS - Magnetic Coupling in thin films and magneto-optical Kerr effect
- FM.ORG - Organic Electronics: Charge transport in organic semiconductors
- FM.PHA - Phase Transitions of Iron-Carbon-Alloys
- FM.PLD - Pulsed Laser Deposition and Thin Film Characterization by Spectroscopic Ellipsometry
- FM.QHE - Quantum Hall Effect
- FM.SOL - Solar Cell
- FM.TES - Tunnel Effect in Superconductors
- FM.ULP - Spatial and Temporal Distortion of Ultrashort Light Pulses
- KT.MOE - Mössbauer Spectroscopy
- KT.PIR - Elemental analysis by proton induced X-ray emission (PIXE)
- KT.POV - Positron Annihilation: Coincidence Spectroscopy
FM.ORG - Organic Electronics: Charge transport in organic semiconductors
Organic semiconductors consist of small molecules and polymers containing π−conjugated functional groups that allow for de-localization and transport of electrons in crystals or thin films. While showing generally poorer conductivity than inorganic semiconductors, e.g. silicon, organic semiconductors can be used in low-temperature fabrication processes. This makes them ideal for use in large-area electronics applications, such as in displays and sensors, and for use in electronics on unconventional substrates, such as plastic foils and paper. An essential way of evaluating the charge-carrier transport of these materials is to implement them as the active layer in field-effect transistors. In this lab course, the students will fabricate organic thin-film transistors (TFTs) using thermal evaporation/sublimation. The students will then analyze the thin-film morphology of the organic semiconductor films using optical microscopy and the charge transport by measuring and analyzing the electrical performance of the transistors.