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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

Department of Electronics and Nanoengineering
Department of Electronics and Nanoengineering
Department of Electronics and Nanoengineering
Department of Electronics and Nanoengineering
Department of Electronics and Nanoengineering
Department of Electronics and Nanoengineering
Markku Sopanen
Markku Sopanen Group
Department of Electronics and Nanoengineering
Sami Suihkonen
Department of Electronics and Nanoengineering

Latest publications

Markku Sopanen Group, Department of Electronics and Nanoengineering

Point defects induced work function modulation of β-Ga<sub>2</sub>O<sub>3</sub>

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

Investigations on morphology, growth mode and indium incorporation in MOCVD grown InGaN/n-GaN heterostructures

Publishing year: 2018 Optik
Department of Electronics and Nanoengineering, Markku Sopanen Group

N-polar AlN buffer growth by metal-organic vapor phase epitaxy for transistor applications

Publishing year: 2018 APPLIED PHYSICS EXPRESS
Department of Electronics and Nanoengineering, Markku Sopanen Group

Nonlinear plasmonic behavior of nanohole arrays in thin gold films for imaging lipids

Publishing year: 2018 Applied Physics Letters
Department of Electronics and Nanoengineering, Department of Applied Physics, NanoMaterials, Aalto Nanofab, Markku Sopanen Group

Atomic layer etching of gallium nitride (0001)

Publishing year: 2017 JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY A
Department of Electronics and Nanoengineering, Department of Micro and Nanosciences, Aalto Nanofab, Markku Sopanen Group

Grass-like Alumina with Low Refractive Index for Scalable, Broadband, Omnidirectional Antireflection Coatings on Glass Using Atomic Layer Deposition

Publishing year: 2017 ACS Applied Materials and Interfaces
Department of Micro and Nanosciences, Markku Sopanen Group

Non-destructive method for strain imaging in an individual GaN nanorod by confocal Raman technique

Publishing year: 2016 Journal of Physics D: Applied Physics
Department of Micro and Nanosciences, Department of Applied Physics, Optics and Photonics, Harri Lipsanen Group, Markku Sopanen Group

A technique for large-area position-controlled growth of GaAs nanowire arrays

Publishing year: 2016 Nanotechnology
Department of Micro and Nanosciences, Markku Sopanen Group

Investigation of significantly high barrier height in Cu/GaN Schottky diode

Publishing year: 2016 AIP ADVANCES
Department of Micro and Nanosciences, Markku Sopanen Group

Study Of 1/f Noise Characteristics In Cu/n-GaN Schottky Barrier Diode

Publishing year: 2016
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