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Pyry Kivisaari

Position:    Postdoc researcher

Phone:    +46 (0)46 222 3850
Cell phone:    +46 (0)72 711 4911
Room:    C366
Address:    Professorsgatan 1
22363 Lund

University:    Lund University
Division:    Solid State Physics
Research Area(s):    Nanoelectronics- & photonics
Interests:    Photonics, optoelectronics, nanostructures, electronic transport, diffusion-driven current injection, device-level modeling



Physical modeling of nanoscale optoelectronic and photonic devices in close collaboration with experimentalists. My main goals include both (1) generating fundamental understanding of the physical phenomena underlying the operation of nanoscale devices and (2) designing new device structures with potential for added functionality or higher efficiency. Current special interests include diffusion-driven charge transport and development of hybrid simulation models that account for both the optical and electronic properties of nanoscale photonic devices. I work closely with experimentalists, aiming to directly benefit the experimental device development and to interpret complex characterization results.

Selected publications:

P.Kivisaari, A. Berg, M. Karimi, K. Storm, S. Limpert, J. Oksanen, L. Samuelson, H. Pettersson and M. T. Borgström, "Optimization of Current Injection in AlGaInP Core-Shell Nanowire Light-Emitting Diodes," Nano Lett. 17, 3599 (2017).

P. Kivisaari, T. Sadi, J. Li, P. Rinke and J. Oksanen, "On the Monte Carlo Description of Hot Carrier Effects and Device Characteristics of III-N LEDs," Adv. Electr. Mat. 3, 1600494 (2017).

Y. Chen, P. Kivisaari, M.-E. Pistol and N. Anttu, "Optimization of the short-circuit current in an InP nanowire array solar cell through opto-electronic modeling," Nanotechnology 27, 435404 (2016).

S. Sintonen, P. Kivisaari, S. Pimputkar, S. Suihkonen, T. Schulz, J. S. Speck and S. Nakamura, "Incorporation and effects of impurities in different growth zones within basic ammonothermal GaN," J. Cryst. Growth 456, 43 (2016).

P. Kivisaari, I. Kim, S. Suihkonen and J. Oksanen, "Elimination of Lateral Resistance and Current Crowding in Large-Area LEDs by Composition Grading and Diffusion-Driven Charge Transport," Adv. Electr. Mat. 3, 1700103 (2017).

H. Jussila, P. Kivisaari, J. Lemettinen, T. Tanaka and M. Sopanen, "Two-Photon Absorption in GaAsPN Intermediate-Band Solar Cells," Phys. Rev. Appl. 3, 054007 (2015).

L. Riuttanen, P. Kivisaari, O. Svensk, J. Oksanen and S. Suihkonen, "Electrical injection to contactless near-surface InGaN quantum well," Appl. Phys. Lett. 107, 051106 (2015).

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