Engineered Nanosystems
The group develops semiconductor devices for efficient energy conversion, including:
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Heat into light (electroluminescent cooling) + Heat into electrical power (thermophotonic power generation)
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Chemical energy into electrical power (chemovoltaic energy conversion)
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Electrical power into light (diffusion-driven devices)
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Metalorganic vapour-phase epitaxy (MOVPE) of III-V materials
The research is supported by a broad range of scientific and technological activities, including mathematical modelling, semiconductor material growth and processing, as well as the development and automation of experimental techniques.
Contact
The research group is led by Dr. Jani Oksanen.
Group members
Selected Publications
Thermophotonic cooling with light-emitting diodes
Toufik Sadi, Ivan Radevici, Jani Oksanen
2020
Nature Photonics
Thermophotonic cooling in GaAs based light emitters
Ivan Radevici, Jonna Tiira, Toufik Sadi, Sanna Ranta, Antti Tukiainen, Mircea Guina, Jani Oksanen
2019
Applied Physics Letters
Chemovoltaic effect for renewable liquid and vapor fuels on semiconductor surfaces
Mahdi Alizadeh, Ivan Radevici, Shengyang Li, Jani Oksanen
2024
ChemSusChem
Temperature Dependence of Reaction Kinetics in a Hybrid GaAs Solar-Fuel Cell Device
Mahdi Alizadeh, Shengyang Li, Seyed Ahmad Shahahmadi, Jani Oksanen
2024
Journal of Physical Chemistry Letters
Pushing the limits of non-radiative recombination suppression in GaAs/GaInP light emitting diodes by doping profile engineering
Ahmad Shahahmadi, Pyry Kivisaari, Benoît Behaghel, Ivan Radevici, Sami Suihkonen, Jani Oksanen
2024
Applied Physics Letters
Back-Contacted GaInP/GaAs LED Structures by Ex-Situ Dopant Redistribution
Antti Myllynen, Seyed Ahmad Shahahmadi, Ivan Radevici, Jani Oksanen
2020
IEEE Transactions on Electron Devices
Electro-Optical Coupling in Double Diode Structures
Nicklas Anttu, Vilgailė Dagytė, Benoît Behaghel, Ivan Radevici, Toufik Sadi, Pyry Kivisaari, Jani Oksanen
2023
Physical Review Applied