Dresden 2003 – wissenschaftliches Programm

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CPP: Chemische Physik und Polymerphysik

CPP 21: POSTER B

CPP 21.20: Poster

Dienstag, 25. März 2003, 19:00–21:00, ZEU/250

Single Molecule Electroluminescence — •Mark Wolf, Jens Pflaum, Fedor Jelezko, and Joerg Wrachtrup — 3. Physikalisches Institut, Universitaet Stuttgart, 70550 Stuttgart, Germany

The optical spectroscopy of single molecules has developed spectacularly during past ten years and becomes the routine technique in modern physical chemistry. Currently used method is based on optical excitation using confocal microscopy approach. We propose to use electrically pumped dyes isolated in aromatic crystals. Fluorescence will be excited by recombination of electron-hole pairs injected in doped aromatic crystal. Electrically driven single impurity molecule will provide important information for the understanding of excitation transport at the nanometer scale, which is a fundamental point in the emerging area of molecular-scale electronics. Another essential application is electrically pumped generation of single photons on demand for quantum cryptography. Preliminary results on charge injection and in terrylene doped p-terphenyl crystals and electroluminescence of bulk crystals are presented.