World's Best Scientists 2026 revealed!

D-Index & Metrics

Electronics and Electrical Engineering

D-Index
45
Citations
9556
World Ranking
3500
National Ranking
1295

Joachim Piprek publication distribution in Electronics and Electrical Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Electronics and Electrical Engineering in 2026. The highlighted bar marks where Joachim Piprek sits on this spectrum.

34–53 publications: 24 scientists 54–73 publications: 52 scientists 74–93 publications: 114 scientists 94–113 publications: 203 scientists 114–133 publications: 269 scientists 134–153 publications: 355 scientists 154–173 publications: 403 scientists 174–193 publications: 445 scientists 194–213 publications: 430 scientists 214–233 publications: 431 scientists 234–253 publications: 399 scientists 254–273 publications: 366 scientists 274–293 publications: 335 scientists 294–313 publications: 300 scientists 314–333 publications: 276 scientists 334–353 publications: 250 scientists 354–373 publications: 214 scientists 374–393 publications: 187 scientists 394–413 publications: 152 scientists 414–433 publications: 169 scientists 434–453 publications: 147 scientists 454–473 publications: 111 scientists 474–493 publications: 117 scientists 494–513 publications: 103 scientists 514–533 publications: 99 scientists 534–553 publications: 92 scientists 554–573 publications: 75 scientists 574–593 publications: 58 scientists 594–613 publications: 69 scientists 614–633 publications: 50 scientists 634–653 publications: 62 scientists 654–673 publications: 54 scientists 674–693 publications: 44 scientists 694–713 publications: 37 scientists 714–733 publications: 28 scientists 734–753 publications: 26 scientists 754–773 publications: 26 scientists 774–793 publications: 19 scientists 794–813 publications: 23 scientists 814–833 publications: 20 scientists 834–853 publications: 16 scientists 854–873 publications: 20 scientists 874–893 publications: 11 scientists 894–913 publications: 11 scientists 914–933 publications: 16 scientists 934–953 publications: 13 scientists 954–973 publications: 10 scientists 974–993 publications: 11 scientists 994–1,013 publications: 9 scientists 1,014–1,033 publications: 9 scientists 1,034–1,053 publications: 10 scientists 1,054–1,064 publications: 6 scientists 1,065+ publications: 99 scientists
34 publications 1,065+

This scientist: 275 publications — 51st percentile

51% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,065 publications or more.

Joachim Piprek D-index placement in Electronics and Electrical Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Electronics and Electrical Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Joachim Piprek sits on this spectrum.

30 D-Index: 178 scientists 31 D-Index: 257 scientists 32 D-Index: 263 scientists 33 D-Index: 262 scientists 34 D-Index: 244 scientists 35 D-Index: 236 scientists 36 D-Index: 211 scientists 37 D-Index: 220 scientists 38 D-Index: 214 scientists 39 D-Index: 214 scientists 40 D-Index: 205 scientists 41 D-Index: 187 scientists 42 D-Index: 194 scientists 43 D-Index: 201 scientists 44 D-Index: 155 scientists 45 D-Index: 189 scientists 46 D-Index: 148 scientists 47 D-Index: 160 scientists 48 D-Index: 134 scientists 49 D-Index: 130 scientists 50 D-Index: 141 scientists 51 D-Index: 156 scientists 52 D-Index: 108 scientists 53 D-Index: 130 scientists 54 D-Index: 112 scientists 55 D-Index: 97 scientists 56 D-Index: 111 scientists 57 D-Index: 102 scientists 58 D-Index: 108 scientists 59 D-Index: 120 scientists 60 D-Index: 103 scientists 61 D-Index: 93 scientists 62 D-Index: 92 scientists 63 D-Index: 74 scientists 64 D-Index: 77 scientists 65 D-Index: 73 scientists 66 D-Index: 64 scientists 67 D-Index: 69 scientists 68 D-Index: 60 scientists 69 D-Index: 39 scientists 70 D-Index: 57 scientists 71 D-Index: 59 scientists 72 D-Index: 46 scientists 73 D-Index: 49 scientists 74 D-Index: 38 scientists 75 D-Index: 35 scientists 76 D-Index: 32 scientists 77 D-Index: 35 scientists 78 D-Index: 31 scientists 79 D-Index: 22 scientists 80 D-Index: 34 scientists 81 D-Index: 31 scientists 82 D-Index: 34 scientists 83 D-Index: 23 scientists 84 D-Index: 18 scientists 85 D-Index: 30 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 20 scientists 89 D-Index: 8 scientists 90 D-Index: 17 scientists 91 D-Index: 7 scientists 92 D-Index: 14 scientists 93 D-Index: 9 scientists 94 D-Index: 15 scientists 95 D-Index: 10 scientists 96 D-Index: 12 scientists 97 D-Index: 10 scientists 98 D-Index: 10 scientists 99 D-Index: 12 scientists 100 D-Index: 16 scientists 101 D-Index: 5 scientists 102 D-Index: 7 scientists 103 D-Index: 7 scientists 104 D-Index: 8 scientists 105 D-Index: 9 scientists 106 D-Index: 13 scientists 107 D-Index: 4 scientists 108 D-Index: 5 scientists 109 D-Index: 10 scientists 110 D-Index: 8 scientists 111+ D-Index: 96 scientists
30 D-Index 111+

This scientist: 45 D-Index — 50th percentile

50% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 111 D-Index or more.

Overview

Joachim Piprek is a researcher affiliated with the NUSOD Institute in the United States, specializing in the fields of Physics and Astronomy as well as Materials Science. Their work predominantly focuses on GaN-based semiconductor devices and materials, covering a total of 14 publications in this area. Their expertise extends into semiconductor quantum structures and devices, semiconductor lasers and optical devices, and advanced optical sensing technologies.

The scientist's research spans several subfields, including condensed matter physics, atomic and molecular physics and optics, electronic, optical and magnetic materials, materials chemistry, and spectroscopy. This multidisciplinary approach is reflected in the variety of topics they investigate, such as Ga2O3 and related materials, ZnO doping and properties, and spectroscopy and laser applications.

Joachim Piprek has authored multiple papers, some of which have been published in notable venues. Select publications include:

  • Efficiency Models for GaN-Based Light-Emitting Diodes: Status and Challenges, 2020, Materials
  • Simulation-based machine learning for optoelectronic device design: perspectives, problems, and prospects, 2021, Optical and Quantum Electronics
  • Recombination in Polar InGaN/GaN LED Structures with Wide Quantum Wells, 2023, physica status solidi (RRL) - Rapid Research Letters
  • GaN-based bipolar cascade lasers with 25 nm wide quantum wells, 2022, Optical and Quantum Electronics
  • GaN-based Bipolar Cascade Lasers with 25nm wide Quantum Wells: Simulation and Analysis, 2021, arXiv (Cornell University)

Their frequent coauthors include G. Muzio, M. Siekacz, C. Skierbiszewski, Jens W. Tomm, and Д. М. Берча, with collaborations ranging from multiple to single joint publications.

Joachim Piprek's work has been disseminated through various publication venues, reflecting the interdisciplinary nature of their research. These venues include:

  • Optical and Quantum Electronics
  • Materials
  • physica status solidi (RRL) - Rapid Research Letters
  • arXiv (Cornell University)
  • Proceedings of the International Display Workshops

Best Publications

  • Origin of efficiency droop in GaN-based light-emitting diodes

    Min-Ho Kim;Martin F. Schubert;Qi Dai;Jong Kyu Kim

  • Efficiency droop in nitride-based light-emitting diodes

    Joachim Piprek

  • Semiconductor Optoelectronic Devices: Introduction to Physics and Simulation

    Joachim Piprek

  • Nitride semiconductor devices : principles and simulation

    Joachim Piprek

  • Physics of high-power InGaN/GaN lasers

    J. Piprek;S. Nakamura

  • What limits the maximum output power of long-wavelength AlGaInAs/InP laser diodes?

    J. Piprek;J.K. White;A.J. SpringThorpe

  • Band gap bowing and refractive index spectra of polycrystalline AlxIn1−xN films deposited by sputtering

    T. Peng;J. Piprek;G. Qiu;J. O. Olowolafe

  • Material parameters of quaternary III - V semiconductors for multilayer mirrors at wavelength

    Mustafa Güden;Joachim Piprek

  • Thermionic emission cooling in single barrier heterostructures

    Ali Shakouri;Chris LaBounty;Joachim Piprek;Patrick Abraham

  • Self-consistent analysis of high-temperature effects on strained-layer multiquantum-well InGaAsP-InP lasers

    J. Piprek;P. Abraham;J.E. Bowers

  • Minimum temperature sensitivity of 1.55 μm vertical-cavity lasers at −30 nm gain offset

    J. Piprek;Y. A. Akulova;D. I. Babic;L. A. Coldren

  • On the uncertainty of the Auger recombination coefficient extracted from InGaN/GaN light-emitting diode efficiency droop measurements

    Joachim Piprek;Friedhard Römer;Bernd Witzigmann

  • Electron leakage effects on GaN-based light-emitting diodes

    Joachim Piprek;Simon Li

  • Design and analysis of double-fused 1.55-/spl mu/m vertical-cavity lasers

    D.I. Babic;J. Piprek;K. Streubel;R.P. Mirin

  • 64/spl deg/C continuous-wave operation of 1.5-/spl mu/m vertical-cavity laser

    N.M. Margalit;J. Piprek;S. Zhang;D.I. Babic

  • Thermal conductivity reduction in GaAs-AlAs distributed Bragg reflectors

    J. Piprek;T. Troger;B. Schroter;J. Kolodzey

  • Enhanced Thermionic Emission Cooling in High Barrier Superlattice Heterostructures

    Ali Shakouri;Chris LaBounty;Patrick Abraham;Joachim Piprek

  • High-power 1320-nm wafer-bonded VCSELs with tunnel junctions

    V. Jayaraman;M. Mehta;A.W. Jackson;S. Wu

  • Long-wavelength vertical-cavity lasers and amplifiers

    A. Karim;S. Bjorlin;J. Piprek;J.E. Bowers

  • Optoelectronic devices : advanced simulation and analysis

    Joachim Piprek

Frequent Co-Authors

John E. Bowers
John E. Bowers University of California, Santa Barbara
Steven P. DenBaars
Steven P. DenBaars University of California, Santa Barbara
Ali Shakouri
Ali Shakouri Purdue University West Lafayette
Evelyn L. Hu
Evelyn L. Hu Harvard University
Shuji Nakamura
Shuji Nakamura University of California, Santa Barbara
Michael Kneissl
Michael Kneissl Technical University of Berlin
Jen-Inn Chyi
Jen-Inn Chyi National Central University
Hadis Morkoç
Hadis Morkoç Virginia Commonwealth University
Larry A. Coldren
Larry A. Coldren University of California, Santa Barbara
Bin Liu
Bin Liu National University of Singapore

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