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Joachim Piprek
Founder and President
NUSOD Institute LLC
P.O. Box 7204
Newark, DE 19714-7204
United States

phone: +1-302-565-4945
e-mail: piprek(at)

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Joachim Piprek received his Diploma and Doctoral degrees in physics from Humboldt University in Berlin, Germany. For more than two decades, he worked in industry and academia on design, simulation, and analysis of various semiconductor devices used in optoelectronics. Dr. Piprek has taught graduate courses at universities in Germany, Sweden, and in the United States. He is founder and co-chair of the annual conference on Numerical Simulation of Optoelectronic Devices (IEEE) and he also chaired several SPIE conferences (link). Dr. Piprek was invited guest editor for various special journal issues on optoelectronic device simulation and he also peer-reviewed nearly 700 journal papers in this field. Currently, he serves as editor of the 2-volume Handbook of Optoelectronic Device Modeling and Simulation and as executive/associate editor for two research journals. Thus far, he has published 3 books (side panel), 6 book chapters, and about 250 papers with more than 6000 citations. Recent invited talks include:

What limits the power conversion efficiency of GaN-based lasers?
SPIE Photonics West, 10098, San Francisco, 2017

Enhanced electroluminescent cooling in GaN-based light-emitting diodes
SPIE Photonics West, 10107, San Francisco, 2017