Dresden 2017 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 25: Poster: Nitrides

HL 25.24: Poster

Montag, 20. März 2017, 15:00–19:00, P2-OG2

Optical biosensing with InGaN/GaN quantum wells — •Benedikt Hörbrand1, Sabyasachi Chakrabortty2, Martin Schneidereit3, Dominik Heinz3, Sebastian Bauer1, Florian Huber1, Tanja Weil2, Ferdinand Scholz3, and Klaus Thonke11Institute of Quantum Matter / Semiconductor Physics Group, Ulm University, 89081 Ulm, Germany — 2Institute of Organic Chemistry III, Ulm University, 89081 Ulm, Germany — 3Institute of Optoelectronics, Ulm University, 89081 Ulm, Germany

Sensing biomolecules is essential in the fields of medicine, pharmacy and biotechnology. Normally it goes along with previous preparation steps like labelling of the molecules. To avoid these complex preparation processes we are aiming at a detection of such molecules using pre-treated semiconductor surfaces. The optical emission of surface-near polar InGaN/GaN quantum well layers reacts on the attachment of biomolecules to the surface.

The surface-near band bending is changed by the deposition of biomolecules like ferritin, which are adsorbed on a functionalized layer on the surface. As a result the emitted wavelength and intensity of the emission changes, depending on the biomolecule.

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