Parts | Days | Selection | Search | Downloads | Help

DS: Fachverband Dünne Schichten

DS 31: Application of Thin Films

DS 31.5: Talk

Thursday, February 28, 2008, 12:15–12:30, H 2032

Application aspect of the silicon light emitters — •Charaf Cherkouk, Lars Rebohle, Slawek Prucnal, Wolfgang Skorupa, and Manfred Helm — Institute of Ion Beam Physics and Materials Research,Forschungszentrum Dresden-Rossendorf (FZD), POB 51 01 19 Dresden Germany

The immediate and accurate monitoring of chemical and biological substances is the key issue in environmental analysis for minimizing the health risk for citizens and their exposure to pollutants. Recently, considerable attention has been focused on endocrine-disrupting compounds EDCs, such as estrogens, which constitute a wide group of environmental pollutants, especially in drinking water. A new concept for measuring the concentration of such organic compounds by using Si-based integrated light sources for fluorescence analysis is presented. In that concept the analyte, estrogen in this example, is labelled with a Fluorescence marker with a large Stokes shift and is immobilized at the passivated surface of the light emitter by receptor molecules. This simple labelling opens a way to extremely small device dimensions and is of great interest for point-of-care measurements. The current system has been characterized by FTIR, Raman and electroluminescence measurements.