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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

Iurii Kim

Department of Electronics and Nanoengineering
Doctoral Candidate

Jori Lemettinen

Department of Electronics and Nanoengineering
Doctoral Candidate

Hanne Ludvigsen

Department of Electronics and Nanoengineering
Senior University Lecturer

Ramesh Raju

Department of Electronics and Nanoengineering
Staff Scientist
Markku Sopanen

Markku Sopanen

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

Sami Suihkonen

Department of Electronics and Nanoengineering
Researcher

Latest publications

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
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-Ga<sub>2</sub>O<sub>3</sub>

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

Site-specific growth of oriented ZnO nanocrystal arrays

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

Surface-core fibers: Plasmonics and sensing

Publishing year: 2018
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
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