Optoelectronics

The Optoelectronics group is part of the Department of Electronics and Nanoengineering, Aalto University. The group is located in the nanofabrication research center Micronova. Optoelectronics group conducts research in the areas of semiconductor materials, optoelectronic components and photonics (e.g. optical fibers). The research is done in collaboration with foreign universities, VTT Microelectronics and industry. Optoelectronics group teaches the first year physics courses for the degree programmes AUT, BioIT and EST in addition to the teaching of NanoRAD majors.

(Figure: Christoffer Kauppinen, Sabbir Ahmed Khan, Jonas Sundqvist, Dmitry B. Suyatin, Sami Suihkonen, Esko I. Kauppinen, and Markku Sopanen, "Atomic layer etching of gallium nitride" Journal of Vacuum Science & Technology A 35, 060603 (2017); doi: 10.1116/1.4993996)
Etched GaN surface

The main research topics are:

  • Dilute nitrides and SESAM structures
  • GaN technology
  • HVPE 
  • LED-microarrays
  • Quantum dot structures
  • Novel LED structures

Group members

Hanne Ludvigsen

Department of Electronics and Nanoengineering
Senior University Lecturer
Markku Sopanen

Markku Sopanen

Department of Electronics and Nanoengineering
Professor (Associate Professor)
Sami Suihkonen

Sami Suihkonen

Department of Electronics and Nanoengineering
Academy Research Fellow

Iurii Kim

Department of Electronics and Nanoengineering
Doctoral Candidate

Ramesh Raju

Department of Electronics and Nanoengineering
Staff Scientist

Latest publications

Markku Sopanen Group, Department of Electronics and Nanoengineering

Epi-Gd2O3/AlGaN/GaN MOS HEMT on 150 mm Si wafer: A fully epitaxial system for high power application

Publishing year: 2019 Applied Physics Letters
Markku Sopanen Group, Department of Electronics and Nanoengineering

Nitrogen-polar polarization-doped field-effect transistor based on Al0.8Ga0.2N/AlN on SiC with drain current over 100 mA/mm

Publishing year: 2019 IEEE Electron Device Letters
Department of Electrical Engineering and Automation, Department of Electronics and Nanoengineering, Markku Sopanen Group, Electronics Integration and Reliability

In-situ annealing characterization of atomic-layer-deposited Al2O3 in N2 , H2 and vacuum atmospheres

Publishing year: 2019 Thin Solid Films
Department of Electronics and Nanoengineering, Markku Sopanen Group

P-Channel GaN transistor based on p-GaN/AlGaN/GaN on Si

Publishing year: 2019 IEEE Electron Device Letters
Markku Sopanen Group, Department of Electronics and Nanoengineering

Structural, morphological, optical and electrical characterization of InGaN/GaN MQW structures for optoelectronic applications

Publishing year: 2019 Applied Surface Science
Markku Sopanen Group, Department of Electronics and Nanoengineering

Influence of InGaN interlayer thickness on GaN layers grown by metal organic chemical vapour deposition

Publishing year: 2019 APPLIED PHYSICS A-MATERIALS SCIENCE AND PROCESSING
Harri Lipsanen Group, Department of Electronics and Nanoengineering, Markku Sopanen Group, Physical Charactristics of Surfaces and Interfaces, Department of Chemistry and Materials Science

Aluminum Nitride Transition Layer for Power Electronics Applications Grown by Plasma-Enhanced Atomic Layer Deposition

Publishing year: 2019 Materials
Markku Sopanen Group, Department of Electronics and Nanoengineering

Point defects induced work function modulation of β-Ga2O3

Publishing year: 2019 Applied Surface Science
Department of Electronics and Nanoengineering, Harri Lipsanen Group, Markku Sopanen Group, Aalto Nanofab

Site-specific growth of oriented ZnO nanocrystal arrays

Publishing year: 2019 Beilstein Journal of Nanotechnology
Markku Sopanen Group, Department of Electronics and Nanoengineering

Effects of indium flow rate on the structural, morphological, optical and electrical properties of InGaN layers grown by metal organic chemical vapour deposition

Publishing year: 2019 Journal of Alloys and Compounds
More information on our research in the Research database.
Research database

Contact:
Associate Professor Markku Sopanen
Email: markku.sopanen at aalto.fi
Tel.: +358 50 3656 356

Postal address:
Department of Electronics and Nanoengineering
Aalto University School of Electrical Engineering
P.O. Box 13500, 00076 Aalto, Finland

Visiting address:
Micronova, 4th floor, room 4188
Tietotie 3, 02150 Espoo

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