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Enhancing the Light Extraction of Ultraviolet Light Emitting Diodes

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Compact UV LEDs are highly attractive for various applications. The FBH succeeded in significantly increasing the currently low efficiency with a novel design approach.

Significant Improvement in Output Power of UV LEDs

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LEDs in the UV spectral range are fabricated from AlGa(In)N epitaxial layer stacks on a sapphire substrate that is transparent for UV light. By optimizing the AlN base layers and the AlGaN structures…

High-Power 1060 nm Ridge Waveguide Lasers with Low-Index Quantum Barriers for Narrow Vertical Divergence Angle

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FBH scientists have recently demonstrated high-power ridge waveguides with extremely narrow lateral and vertical far field angles of 12° x 17° respectively (95% power content).

Innovative Transistorchips for Satellites

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Nearly every household uses the processing power of modern high-power chips. For special applications, scientists not only strive for ever smaller and faster transistors but also for reliable…

Innovative Soak-Lift Processing at the FBH Enables Delicate Structures

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At the Ferdinand-Braun-Institut (FBH) a specific lift-off process has been developed which allows the institute to lift-off extremely delicate gate structures at highest quality. In the future,…

Benchmarking of AlGaN/GaN epitaxial wafers for microwave power devices

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In order to obtain an unbiased information on the world-wide state of the art of epitaxial layer performance and quality, FBH has been selected by the European Space Agency (ESA) for a benchmarking…

First Class-S Power Amplifiers for the Microwave Frequency Range

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Energy consumption of the wireless communication infrastructure has become a major concern. Concepts for highly efficient power amplifiers have thus become the subject of intensive research.…

Ready for industry

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Industrial applications require increasingly faster, powerful and energy-efficient devices for electronic and optoelectronic power applications. Therefore, the Ferdinand-Braun-Institute founded its…

Laser diodes: from violet to blue

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Lasers emitting in the violet and blue spectral range are highly attractive, e. g. for applications in atomic spectroscopy. The FBH thus works on the realization of wavelength stabilized laser…

Prize winner 2010: "wissen.schafft.arbeit" for successful technology transfer

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The winners of the competition are set - amongst them the FBH. The technology transfer prize, which is endowed with 20.000 Euro, has been awarded for the development and successful transfer of a…