Pyry Kivisaari
Postdoctoral Researcher
T314 Dept. Neuroscience and Biomedical Engineering
Postdoctoral researcher
Full researcher profile
https://research.aalto.fi/...
Email
[email protected]
Phone number
+358504531255
Publications
Effects of resonances and surface texturing on light emission in emerging thin-film devices
Pyry Kivisaari, Mikko Partanen, Jani Oksanen
2024
Physics and Simulation of Optoelectronic Devices XXXII
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
Electro-Optical Coupling in Double Diode Structures
Nicklas Anttu, Vilgailė Dagytė, Benoît Behaghel, Ivan Radevici, Toufik Sadi, Pyry Kivisaari, Jani Oksanen
2023
Back-Contacted Carrier Injection for Scalable GaN Light Emitters
Iurii Kim, Christoffer Kauppinen, Ivan Radevici, Pyry Kivisaari, Jani Oksanen
2022
Resonance effects in the radiation transfer of thin-film intracavity devices
Pyry Kivisaari, Jani Oksanen
2022
Interplay of Photons and Charge Carriers in Thin-Film Devices
Pyry Kivisaari, Mikko Partanen, Toufik Sadi, Jani Oksanen
2021
Geometry Tailoring of Emission from Semiconductor Nanowires and Nanocones
Nicklas Anttu, Henrik Mäntynen, Anastasiia Sorokina, Pyry Kivisaari, Toufik Sadi, Harri Lipsanen
2020
Silicon-integrated iii-v light emitters and absorbers using bipolar diffusion
Pyry Kivisaari
2020
Tailored emission to boost open-circuit voltage in solar cells
Nicklas Anttu, Pyry Kivisaari, Yang Chen
2019
Simulation of photon transport in resonant double-diode structures
Pyry Kivisaari, Mikko Partanen, Toufik Sadi, Jani Oksanen
2019
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices VIII
Towards fully self-consistent optoelectronic simulation of planar devices
Pyry Kivisaari, Toufik Sadi, Mikko Partanen, Jani Oksanen
2019
Effect of interface recombination on the efficiency of intracavity double diode structures
Toufik Sadi, Ivan Radevici, Pyry Kivisaari, Alberto Casado, Jani Oksanen
2019
Efficient Fully-Coupled Electro-Optical Simulation Framework for Large-Area Planar Device
Toufik Sadi, Alberto Casado, Ivan Radevici, Pyry Kivisaari, Jani Oksanen
2019
19th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2019
Electroluminescent Cooling in III-V Intracavity Diodes
Toufik Sadi, Ivan Radevici, Pyry Kivisaari, Jani Oksanen
2019
Emission enhancement, light extraction and carrier dynamics in InGaAs/GaAs nanowire arrays
Pyry Kivisaari, Yang Chen, Nicklas Anttu
2018
Energy Transport in Lossy Resonators by Optical Admittance Methods
Pyry Kivisaari, Mikko Partanen, Jani Oksanen
2018
31st Annual Conference of the IEEE Photonics Society, IPC 2018
Interference-exact radiative transfer simulations
Pyry Kivisaari, Toufik Sadi, Jani Oksanen
2018
18th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2018
Optical admittance method for light-matter interaction in lossy planar resonators
Pyry Kivisaari, Mikko Partanen, Jani Oksanen
2018
Electroluminescent Cooling in III-V Intracavity Diodes
Toufik Sadi, Ivan Radevici, Pyry Kivisaari, Jani Oksanen
2018
Electroluminescent cooling in intracavity light emitters
Toufik Sadi, Pyry Kivisaari, Jonna Tiira, Ivan Radevici, Tuomas Haggren, Jani Oksanen
2018
Electroluminescent cooling using double diode structures
Toufik Sadi, Ivan Radevici, Pyry Kivisaari, Alberto Casado, Jani Oksanen
2018
18th International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD 2018
Optimized efficiency in InP nanowire solar cells with accurate 1D analysis
Yang Chen, Pyry Kivisaari, Mats-Erik Pistol, Nicklas Anttu
2017
Diffusion-Driven Charge Transport in Light Emitting Devices
Iurii Kim, Pyry Kivisaari, Jani Oksanen, Sami Suihkonen
2017
Elimination of Lateral Resistance and Current Crowding in Large-Area LEDs by Composition Grading and Diffusion-Driven Charge Transport
Pyry Kivisaari, Iurii Kim, Sami Suihkonen, Jani Oksanen
2017
Elimination of resistive losses in large-area LEDs by new diffusion-driven devices
Pyry Kivisaari, Iurii Kim, Sami Suihkonen, Jani Oksanen
2017
Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXI
On the Monte Carlo Description of Hot Carrier Effects and Device Characteristics of III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jingrui Li, Patrick Rinke, Jani Oksanen
2017
Optimization of Current Injection in AlGaInP Core'Shell Nanowire Light-Emitting Diodes
Pyry Kivisaari, Alexander Berg, Mohammad Amin Karimi, Kristian Storm, Steven Limpert, Jani Oksanen, Lars Samuelson, Haiskan Pettersson, Magnus T. Borgström
2017
Modeling of charge and photon transport in coupled intracavity light emitters
Toufik Sadi, Pyry Kivisaari, Jonna Tiira, Ivan Radevici, Tuomas Haggren, Jani Oksanen
2017
2017 International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)
Intracavity double diode structures with GaInP barrier layers for thermophotonic cooling
Jonna Tiira, Ivan Radevici, Tuomas Haggren, Teemu Hakkarainen, Pyry Kivisaari, Jari Lyytikäinen, Arto Aho, Antti Tukiainen, Mircea Guina, Jani Oksanen
2017
Optical and Electronic Cooling of Solids II
Conduction Band Offset and Polarization Effects in InAs Nanowire Polytype Junctions
I-Ju Chen, Sebastian Lehmann, Malin Nilsson, Pyry Kivisaari, Heiner Linke, Kimberly A. Dick, Claes Thelander
2016
Optimization of the short-circuit current in an InP nanowire array solar cell through opto-electronic modeling
Yang Chen, Pyry Kivisaari, Mats-Erik Pistol, Nicklas Anttu
2016
Monte Carlo study of non-quasiequilibrium carrier dynamics in III–N LEDs
Pyry Kivisaari, Toufik Sadi, Jani Oksanen, Jukka Tulkki
2016
Incorporation and effects of impurities in different growth zones within basic ammonothermal GaN
Sakari Sintonen, Pyry Kivisaari, Siddha Pimputkar, Sami Suihkonen, Tobias Schulz, James S. Speck, Shuji Nakamura
2016
Two-Photon Absorption in GaAs1-x-yPyNx Intermediate-Band Solar Cells
Henri Jussila, Pyry Kivisaari, Jori Lemettinen, Tooru Tanaka, Markku Sopanen
2015
Bipolar Monte Carlo simulation of electrons and holes in III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jani Oksanen, Jukka Tulkki
2015
Gallium Nitride Materials and Devices X, San Francisco, February 09-12, 2015
Bipolar Monte Carlo simulation of hot carriers in III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jingrui Li, Vihar Georgiev, Jani Oksanen, Patrick Rinke, Jukka Tulkki
2015
Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD
Bipolar Monte Carlo simulation of hot carriers in III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jingrui Li, Vihar Georgiev, Jani Oksanen, Patrick Rinke, Jukka Tulkki
2015
2015 International Conference on Simulation of Semiconductor Processes and Devices, SISPAD 2015
Diffusion-driven current transport to near-surface nanostructures
Pyry Kivisaari, Lauri Riuttanen, Sami Suihkonen, Jani Oksanen
2015
Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD
Monte Carlo simulation of hot carrier transport in III-N LEDs
Pyry Kivisaari, Jani Oksanen, Jukka Tulkki, Toufik Sadi
2015
Diffusion injection in a buried multiquantum well light-emitting diode structure
Lauri Riuttanen, Pyry Kivisaari, Olli Svensk, Jani Oksanen, Sami Suihkonen
2015
Electrical injection to contactless near-surface InGaN quantum well
Lauri Riuttanen, Pyry Kivisaari, Olli Svensk, Jani Oksanen, Sami Suihkonen
2015
Vertical excitation profile in diffusion injected multi-quantum well light emitting diode structure
Lauri Riuttanen, Pyry Kivisaari, Olli Svensk, Teemu Vasara, Pertti Myllys, Jani Oksanen, Sami Suihkonen
2015
Gallium Nitride Materials and Devices X
Microscopic simulation of hot electron transport in III-N light-emitting diodes
Toufik Sadi, Pyry Kivisaari, Jani Oksanen, Jukka Tulkki
2015
From computational models to improved light-emitting diodes and new devices
Pyry Kivisaari
2014
Monte Carlo-drift-diffusion simulation of electron current transport in III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jani Oksanen, Jukka Tulkki
2014
Conference on Physics and Simulation of Optoelectronic Devices XXII, San Francisco, CA, 3-6 February 2014
Monte Carlo simulation of hot electron transport in III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jani Oksanen, Jukka Tulkki
2014
Proceedings of the International Conference on Numerical Simulation of Optoelectronic Devices, NUSOD
Diffusion injected multi-quantum well light-emitting diode structure
Lauri Riuttanen, Pyry Kivisaari, Henri Nykänen, Olli Svensk, Sami Suihkonen, Jani Oksanen, Jukka Tulkki, Markku Sopanen
2014
On the correlation of the Auger generated hot electron emission and efficiency droop in III-N light-emitting diodes
Toufik Sadi, Pyry Kivisaari, Jani Oksanen, Jukka Tulkki
2014
University marketized: higher education as a primus motor for growth?
Merkebu Degefa, Nina Heiska, Helena Jin, Anssi Käki, Aqdas Malik, Arsham Mazaheri, Pyry Kivisaari
2013
BIT BANG 5: Changing Global Landscapes - Role of Policy Making and Innovation Capability
Coupled Monte Carlo-drift-diffusion simulation of transport in III-N LEDs
Pyry Kivisaari, Toufik Sadi, Jani Oksanen, Jukka Tulkki
2013
16th IEEE International Workshop on Computational Electronics (IWCE), Nara, Japan, 4-7 June 2013
Current injection to free-standing III-N nanowires by bipolar diffusion
Pyry Kivisaari, Jani Oksanen, Jukka Tulkki
2013
Diffusion-assisted current spreading for III-Nitride light-emitting applications
Pyry Kivisaari, Jani Oksanen, Jukka Tulkki
2013
Photonics West, Physics and Simulation of Optoelectronic Devices XXI,San Francisco, California, USAFebruary 02, 2013
Polarization doping and the efficiency of III-nitride optoelectronic devices
Pyry Kivisaari, Jani Oksanen, Jukka Tulkki
2013
Recombination lifetime in InGaN/GaN based light emitting diodes at low current densities by differential carrier lifetime analysis
Lauri Riuttanen, Pyry Kivisaari, Nikolai Mäntyoja, Jani Oksanen, Muhammad Ali, Sami Suihkonen, Markku Sopanen
2013
Carrier Dynamics in High-Efficiency Blue GaN Light-Emitting Diodes Under Different Bias Currents and Temperatures
Kai-Lun Chi, Jin-Wei Shi, C.H. Jang, Pyry Kivisaari, Jani Oksanen, Jukka Tulkki, M.L. Lee, J.K. Sheu
2012
Effects of lateral current injection in GaN multi-quantum well light-emitting diodes
P. Kivisaari, J. Oksanen, J. Tulkki
2012
Electrical measurement of internal quantum efficiency and extraction efficiency of III-N light-emitting diodes
Pyry Kivisaari, Lauri Riuttanen, Jani Oksanen, Sami Suihkonen, Muhammad Ali, Harri Lipsanen, Jukka Tulkki
2012
From democratizing innovation to innovating democracy
Wael Soliman, Pyry Kivisaari, Henna Warma, Vilen Looga, Petri Saarikko, Yang Deng, Andrea Buda
2012
Bit Bang IV: future of internet : societal, business, governance and technological aspects
Effects of direct lateral Current Injection on the Performance, Overall Efficiency and Emission Distribution in GaN LED structures: a 2D Computational Study
Pyry Kivisaari, Jani Oksanen, Jukka Tulkki
2011
2011 MRS Spring Meeting, San Francisco, California, USA, April 25 - 29, 2011