Postdoc position in Germanium photodiodes

Postdoc position in Germanium photodiodes

Published Deadline Location
19 Jul 31 Aug Enschede

Job description

The group of Integrated Devices and Systems (IDS) at the University of Twente (UT) is part of the Faculty of Electrical Engineering, Mathematics and Computer Science (EEMCS) and the MESA+ Institute for Nanotechnology. MESA+ is the largest research institute of the UT. The institute trains graduate students and PhD-students and conducts research in the fields of nanotechnology, microsystems, materials science and microelectronics. Unique of MESA+ is its multidisciplinary composition.

The IDS group has a vacancy for a postdoc to work on photodiode detectors for photonic integrated circuits (PICs).

The aim of the project is to research and develop germanium photodiodes that are sensitive in a broad spectral range encompassing visual to short-wavelength light up to 1600 nm. The basic process will be a further development of our broadband Ge-on-Si "PureGaB" diodes that have been demonstrated with exceptional broadband responsivity and low dark currents. Concomitantly, the diodes should be modified to allow integration in an existing waveguide photonic circuit platform, and performance suitable for quantum computing circuits is aspired. The postdoc will focus on the device design, characterization and optimization, and partly supervise a PhD student focusing on the device fabrication. They will work closely with 2 PhD's already studying the application of pure boron layers in other semiconductor devices.

This topic is part of a large European project with ten industrial and academic partners with a strong international reputation in PIC research. We aim to develop a unique PIC platform with functions enabled by hybrid integration of waveguides, detectors and lasers. The students have full access to state-of-the-art characterization equipment as well as the MESA+ Nanolab for experimentation.

Type of work: 50% optoelectronic device design and characterization, 30% practical experimentation, 20% material analysis.


University of Twente (UT)


  • We are looking for a highly motivated, positive and hardworking researcher with a PhD degree on a topic directly related to optoelectronic devices and with an experimentation focus.
  • We seek candidates with good team spirit and multidisciplinary curiosity, who like to work in an internationally oriented environment where many cultures meet.
  • Proficiency in English is a requirement.

Conditions of employment

  • We offer a postdoc position for 18 months;
  • Your salary and associated conditions are in accordance with the collective labour agreement for Dutch universities (CAO-NU);
  • Gross salary between € 3.557,- and € 4.670,- per month depending on experience and qualifications;
  • Excellent benefits including a holiday allowance of 8% of the gross annual salary, a year-end bonus of 8.3% and a solid pension scheme;
  • Between 29 and 41 leave days in case of full-time employment;
  • Excellent support for research and facilities for professional and personal development.
  • We encourage a high degree of responsibility and independence, while collaborating with close colleagues, researchers and other university staff.
  • We are also a family-friendly institution that offers parental leave (both paid and unpaid) and career support for partners;
  • A green campus with lots of sports facilities and an international scientific community.

Additional information

Are you interested in this position? Please send your application until August 31st and include:
  • an application/motivation letter, emphasizing your specific interest, qualifications and motivation to apply for this position,
  • a detailed CV (resume) and
  • a publication list.
For more information please contact the group secretary, Mrs. Kampman: [](

An interview will be part of the selection procedure.


  • Postdoc
  • Engineering
  • max. 40 hours per week
  • €3557—€4670 per month
  • Doctorate
  • 716


University of Twente (UT)

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Drienerlolaan 5, 7522NB, Enschede

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Application procedure

Application procedure

Make sure to apply no later than 31 Aug 2022 23:59 (Europe/Amsterdam).