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A scanning electron microscope (SEM) image shows a cross-sectional view of a semiconductor device. The image is labeled to identify key components: the 'Emitter,' surrounded by 'Passivation,' resting on the 'Base.' The layers of the device are also labeled: 'InP' and 'InGaAs'.
FBH news: 24.03.2026

Tuning surface properties of dielectrics on InGaAs: on the passivation of InP HBTs for high-frequency devices

We have developed a low-temperature ALD passivation for InP/InGaAs HBTs tailored to aggressively scaled devices. By improving surface control, the approach supports reliable millimeter-wave and sub-terahertz applications and leads to higher gain and improved RF performance.
Close-up of a quantum physics experiment setup in the laboratory: a red laser beam hits several optical components such as lenses, mirrors, and mounts, which are mounted on an optical experiment plate. The metal components and adjustment screws reflect the intense red light as the laser beam passes through the optical elements.
Press release FBH & HU Berlin: 16.03.2026

Ultrafast laser pulses bring diamond-based quantum internet closer to reality
Illustration of a data analysis workflow showing signal curves on the left, a magnifying glass labeled “Feature selection” highlighting bar charts, and arrows leading to a stacked classification result labeled “Class 0,” “Class 1 low,” “Class 2 medium,” and “Class 3 high,” with a decision-tree diagram in the background.
FBH news: 10.03.2026

Advanced chemometrics for accurate classification of spectroscopic data
Semiconductor wafer with patterned circuits mounted on a test stage, contacted by probe needles beneath a microscope and surrounded by laboratory measurement equipment.
FBH news: 25.02.2026

MHz load-line measurements for model parameter extraction

Translating ideas into innovation

The Ferdinand-Braun-Institut (FBH) is an application-oriented research institute in the fields of high-frequency electronics, photonics and quantum technologies. It researches and realizes electronic and optical components, modules and systems based on compound semiconductors.

Our research areas

Our offer

Metal cube-shaped prototype with 120 UV LEDs for irradiating the skin.
Prototype Development
The International Space Station (ISS) in space, behind it a part of the earth.
Components, Modules & System for Quantum Technologies
Two needles on a wafer, with which a high voltage measurement is carried out.
Semiconductor Chip Development: Lasers, UV LEDs
Laboratory environment with a technician in protective clothing working at advanced semiconductor equipment. The "APECS" logo and tagline "European Chiplet Innovation" are prominently displayed, with a blue geometric overlay design.
APECS pilot line for chiplet innovation
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Career

Working at the FBH Job offers
An employee in the clean room.

Printed & digital

Publications

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Annual reports

Cover image of the Ferdinand-Braun-Institut's 2024/2025 annual report. The collage shows a laser module with a laser chip and other microelectronic elements in a butterfly housing, a microscope with a female researcher in cleanroom clothing, a group of scientists in protective suits and laser safety goggles, a close-up of microchip structures, and a detail of a cleanroom facility. The solar wall of the institute building can be seen in the background. The FBH logo is located at the top right.
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The FBH in numbers

400   Employees

from 30 countries work with us.

273   Patents

do we have in our portfolio - both German and international.

163   Projects

are we currently working on - state funded & industrial contracts.

12   Spin-Offs

have evolved from FBH - the majority of these are still active today.

4000   m² cleanroom & lab space

for state-of-the-art research with high-performance process technology.