Quantum Yield Berlin

Scientific instruments, built by researchers and engineers.

Quantum Yield Berlin brings together researchers, instrument developers and engineers with expertise in semiconductor physics, optical spectroscopy, electronics, automation and scientific software.

This combination of scientific and engineering expertise enables us to develop compact measurement systems that connect quantitative optical characterization with practical laboratory workflows.

Our story

From research expertise to practical measurement systems.

QYB grew out of the idea that advanced quantitative optical characterization should not require a complex custom-built laboratory setup.

The story of QYB began in 2018, when the team started translating its expertise in absolute photoluminescence and electroluminescence measurements into a compact measurement system that could make these advanced characterization methods readily accessible to other research laboratories.

After three years of development and refinement, QYB was founded as aspin-off of Helmholtz-Zentrum Berlin in early 2021 and launched its first commercial measurement system in the summer of the same year.

Since then, the QYB portfolio has expanded beyond absolute PL and EL measurements to include spatially resolved characterization, time-resolved photoluminescence, integrated data analysis and complementary measurement solutions for semiconductor research.

While the portfolio has expanded, the original idea remains the same:bringing advanced quantitative optical characterization from specialized laboratory setups into compact, calibrated and practical research instruments.

Areas of expertise

Every part of the measurement system belongs together.

  • Semiconductor Physics

    Luminescence, recombination and carrier dynamics.

  • Optical Instrumentation

    Absolute PL/EL, calibrated optical measurements and time-resolved characterization.

  • Electronics & Automation

    Excitation, electrical bias, motion control and automated measurement workflows.

  • Software & Data Analysis

    Instrument control, quantitative analysis, visualization and scientific reporting.

Team

Our team brings together expertise in software development, experimental physics and scientific instrumentation to build and advance QYB’s technology.
  • Aleksei Belonovskii

    Aleksei Belonovskii

    Head of Technology

  • Francesco Schmidt-Anton

    Francesco Schmidt-Anton

    Production Manager

  • Manasi Pranav Ram

    Manasi Pranav Ram

    Head of Technical Sales

  • Theresa Karmann

    Theresa Karmann

    R&D Support

  • Lukas Kegelmann

    Lukas Kegelmann

    General Manager

Founders

QYB was founded by researchers and developers with backgrounds spanning semiconductor physics, optoelectronics, spectroscopy and scientific instrumentation.
  • Amran Al-Ashouri

    Amran Al-Ashouri

  • Aboma Merdasa

    Aboma Merdasa

  • Steve Albrecht

    Steve Albrecht

  • Thomas Unold

    Thomas Unold

  • José A. Márquez

    José A. Márquez

  • Lukas Kegelmann

    Lukas Kegelmann

Scientific Advisory Board

Scientific perspective, kept close.

  • Eva Unger

    Eva Unger

  • Christian M. Wolff

    Christian M. Wolff

  • Pietro Caprioglio

    Pietro Caprioglio

  • Martin Stolterfoht

    Martin Stolterfoht

  • Dieter Neher

    Dieter Neher

Designed and developed in Berlin

Built for scientific measurement.

From optical design and calibration to electronics, automation and software, QYB develops complete measurement systems around the practical requirements of modern research laboratories.