Materialien und Bauelementstrukturen für organische Laserdioden (English shop)

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Organic laser diodes represent a highly sought-after research goal in organic optoelectronics. They could close the existing gap in commercially available (inorganic) laser diodes in the spectral range between 460 nm and 620 nm. In addition, high tunabilities of up to 100 nm are conceivable owing to the use of organic dyes. However, these exceedingly attractive properties are impeded by both technological and physical obstacles, which have so far prevented the development of an OLD. Above all, the low charge carrier mobilities preclude many of the successful development strategies used for inorganic laser diodes.

The basis of a laser diode is a suitable waveguide structure. In order to develop such a structure, a waveguide measurement setup based on the variable stripe length method was built as part of this work. Furthermore, simulation software for calculating multilayered, complex waveguide structures was developed. This made both an experimental and a theoretical analysis of the waveguides possible, allowing deep insights into the processes within the devices.