Enabling high-resolution imaging and spectroscopy of electron beam sensitive hybrid material systems (A12)

Subject Area Experimental Condensed Matter Physics
Term from 2017 to 2023
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 182087777
 

Project Description

The very special opto-electronic properties of hybrid inorganic/organic systems (HIOS) being investigated within this CRC are largely determined by the electronic structure and distribution of charges at the inorganic/organic interface. Holographic imaging techniques in transmission electron microscopy allow electrostatic potentials, electric fields, and charge distributions to be imaged. State of the art electron energy-loss spectroscopy available to this project provides a sub-nanometer-sized probe of the electronic structure with approximately 5 meV energy resolution. Novel techniques based on both of these principles will be developed to minimize the electron beam damage to the sample. Beam-sensitive HIOS will then be characterized to reveal maps of charge density and local dielectric function that can be compared to theory.
DFG Programme Collaborative Research Centres
Subproject of SFB 951:  Hybrid Inorganic/Organic Systems for Opto-Electronics (HIOS)
Applicant Institution Humboldt-Universität zu Berlin
Project Head Professor Dr. Christoph Tobias Koch