Members

The experimental research group led by Alfred J. Meixner has been working in the field of optical spectroscopy of single molecules, confocal and near-field optical microscopy and high-resolution laser spectroscopy for over 15 years. In the past years nano-optics, plasmonics, and life cell imaging were added. Current research projects include (1) tip-enhanced and surface-enhanced luminescence and Raman spectroscopy of molecular semiconductor thin films with a parabolic mirror microscope, (2) the development of new microscopic methods for the detection, spectroscopy and manipulation of individual quantum systems (individual molecules, quantum dots, noble metal nanoparticles) with the help of optical micro-resonators or plasmonic nanostructures, (3) confocal and nearfield optical microscopy at cryogenic temperatures, (4) confocal microscopy and laser spectroscopy on living plant cells. Dai Zhang focuses on tip-enhanced Raman and fluorescence spectroscopy, spatially resolved spectroscopy, and near-field microscopy on organic semiconductors, plasmonics. Her central research focus includes investigations on the morphology with respect to the “bulk heterojunction” efficiency of organic solar cells as well as charge transfer processes in dye-sensitized solar cells. Close collaboration exists with the research groups of Brecht (single molecule spectroscopy), Schreiber and Chassé (molecular films, semiconductors), Fleischer (plasmonics, optical antenna systems), Fortágh (laser microscopy) as well as Kleiner/Kölle (spatially resolved spectroscopy of semiconducting devices).

More information is available on the group homepage of Alfred J. Meixner and Dai Zhang.