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)
(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)
The main research topics are:
- Dilute nitrides and SESAM structures
- GaN technology
- HVPE
- LED-microarrays
- Quantum dot structures
- Novel LED structures
Group members
Latest publications
Metalorganic Chemical Vapor Deposition of AlN on High Degree Roughness Vertical Surfaces for MEMS Fabrication
Kristina Bespalova, Glenn Ross, Sami Suihkonen, Mervi Paulasto-Kröckel
2024
Advanced Electronic Materials
Enhanced Specific Detectivity and UV-to-Visible Rejection-Ratio of Visible-Blind Metal– Semiconductor–Metal Photodetectors, Based on Epitaxial GaN/Si(111)
Pinki Pal, Amadeep Kaur, Sami Suihkonen, Jori Lemettinen, A. Laha, Subhabrata Dhar, Suddhasatta Mahapatra
2023
IEEE Transactions on Electron Devices
Effect of atomic layer annealing in plasma-enhanced atomic layer deposition of aluminum nitride on silicon
H Seppanen, I Prozheev, C Kauppinen, S Suihkonen, K Mizohata, H Lipsanen
2023
JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY A
Back-Contacted Carrier Injection for Scalable GaN Light Emitters
Iurii Kim, Christoffer Kauppinen, Ivan Radevici, Pyry Kivisaari, Jani Oksanen
2022
Physica Status Solidi (A) Applications and Materials Science
Impurity diffusion in ion implanted AlN layers on sapphire substrates by thermal annealing
Hironori Okumura, Yasuhiro Watanabe, Tomohiko Shibata, Kohei Yoshizawa, Akira Uedono, Hiroki Tokunaga, Shuuichi Koseki, Tadanobu Arimura, Sami Suihkonen, Tomás Palacios
2022
Japanese Journal of Applied Physics
High-Detectivity Ultraviolet Photodetectors with Epitaxial GaN on Si(111)
Pinki Pal, Bhupesh Bhardwaj, Robin Dahiya, Sami Suihkonen, Jori Lemettinen, Apurba Laha, Dinesh Kabra, Suddhasatta Mahapatra
2022
2022 IEEE International Conference on Emerging Electronics, ICEE 2022
A Highly Sensitive and Robust GaN Ultraviolet Photodetector Fabricated on 150-mm Si (111) Wafer
Ravindra Singh Pokharia, Ritam Sarkar, Shivam Singh, Swarup Deb, Sami Suihkonen, Jori Lemettinen, Subhabrata Dhar, Dinesh Kabra, Apurba Laha
2021
IEEE Transactions on Electron Devices
Epi-Gd₂O₃-MOSHEMT: A Potential Solution Toward Leveraging the Application of /Si AlGaN/GaNHEMT With Improved ION/IOFF Operating at 473 K
Ritam Sarkar, Bhanu B. Upadhyay, Swagata Bhunia, Ravindra S. Pokharia, Dhiman Nag, S. Surapaneni, Jori Lemettinen, Sami Suihkonen, Philipp Gribisch, Hans Jorg Osten, Swaroop Ganguly, Dipankar Saha, Apurba Laha
2021
IEEE Transactions on Electron Devices
Metalorganic vapor phase epitaxy of wurtzite InP nanowires on GaN
Christoffer Kauppinen, Tuomas Haggren, Harri Lipsanen, Markku Sopanen
2020
Applied Physics Letters
MOVPE growth of GaN on patterned 6-inch Si wafer
Iurii Kim, Joonas Holmi, Ramesh Raju, Atte Haapalinna, Sami Suihkonen
2020
Journal of Physics Communications
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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