World's Best Scientists 2026 revealed!
Karl Leo

Karl Leo

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Materials Science
Germany
2022

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 129 354 336 18 17 981 65970

Karl Leo publications per year

The chart shows the history of publications by Karl Leo between 1973 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Karl Leo published across 53 years, from 1973 to 2025, averaging 20.3 papers a year. Output peaked at 69 publications in 2013. 46 of the 1,075 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 1973 to 2025. Vertical axis: number of publications, 0 to 69. Peak 69 publications in 2013. 1973: 1 publication 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 1 publication 1986: 0 publications 1987: 3 publications 1988: 1 publication 1989: 3 publications 1990: 13 publications 1991: 10 publications 1992: 23 publications 1993: 33 publications 1994: 25 publications 1995: 2 publications 1996: 13 publications 1997: 9 publications 1998: 22 publications 1999: 10 publications 2000: 21 publications 2001: 27 publications 2002: 16 publications 2003: 26 publications 2004: 28 publications 2005: 15 publications 2006: 24 publications 2007: 30 publications 2008: 39 publications 2009: 32 publications 2010: 44 publications 2011: 61 publications 2012: 64 publications 2013: 69 publications 2014: 56 publications 2015: 55 publications 2016: 55 publications 2017: 30 publications 2018: 30 publications 2019: 24 publications 2020: 28 publications 2021: 39 publications 2022: 26 publications 2023: 21 publications 2024: 21 publications 2025: 25 publications
1973 2025

1,075 publications in total across all disciplines

View publications per year as a table
Karl Leo: publications per year, 1973 to 2025
Year Publications
1973 1
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 1
1986 0
1987 3
1988 1
1989 3
1990 13
1991 10
1992 23
1993 33
1994 25
1995 2
1996 13
1997 9
1998 22
1999 10
2000 21
2001 27
2002 16
2003 26
2004 28
2005 15
2006 24
2007 30
2008 39
2009 32
2010 44
2011 61
2012 64
2013 69
2014 56
2015 55
2016 55
2017 30
2018 30
2019 24
2020 28
2021 39
2022 26
2023 21
2024 21
2025 25
Total 1,075
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Karl Leo publication distribution in Materials Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Materials Science in 2026. The highlighted bar marks where Karl Leo sits on this spectrum.

No. of scientists
200 400 600 800
Bar chart with 57 bars. Horizontal axis: publications, 50–69 to 1,163+. Vertical axis: number of scientists, 0 to 891. Most scientists, 891, have 190–209 publications. The last bar groups every scientist with 1,163 publications or more. The highlighted bar, 970–989 publications, is where this scientist sits. 50–69 publications: 28 scientists 70–89 publications: 152 scientists 90–109 publications: 356 scientists 110–129 publications: 487 scientists 130–149 publications: 723 scientists 150–169 publications: 835 scientists 170–189 publications: 850 scientists 190–209 publications: 891 scientists 210–229 publications: 862 scientists 230–249 publications: 766 scientists 250–269 publications: 726 scientists 270–289 publications: 665 scientists 290–309 publications: 593 scientists 310–329 publications: 537 scientists 330–349 publications: 477 scientists 350–369 publications: 440 scientists 370–389 publications: 356 scientists 390–409 publications: 321 scientists 410–429 publications: 256 scientists 430–449 publications: 246 scientists 450–469 publications: 216 scientists 470–489 publications: 212 scientists 490–509 publications: 174 scientists 510–529 publications: 194 scientists 530–549 publications: 162 scientists 550–569 publications: 131 scientists 570–589 publications: 111 scientists 590–609 publications: 103 scientists 610–629 publications: 99 scientists 630–649 publications: 77 scientists 650–669 publications: 92 scientists 670–689 publications: 56 scientists 690–709 publications: 53 scientists 710–729 publications: 53 scientists 730–749 publications: 38 scientists 750–769 publications: 52 scientists 770–789 publications: 43 scientists 790–809 publications: 38 scientists 810–829 publications: 34 scientists 830–849 publications: 25 scientists 850–869 publications: 18 scientists 870–889 publications: 20 scientists 890–909 publications: 24 scientists 910–929 publications: 27 scientists 930–949 publications: 20 scientists 950–969 publications: 17 scientists 970–989 publications: 10 scientists 990–1,009 publications: 16 scientists 1,010–1,029 publications: 13 scientists 1,030–1,049 publications: 12 scientists 1,050–1,069 publications: 9 scientists 1,070–1,089 publications: 8 scientists 1,090–1,109 publications: 7 scientists 1,110–1,129 publications: 9 scientists 1,130–1,149 publications: 2 scientists 1,150–1,162 publications: 5 scientists 1,163+ publications: 100 scientists
50–69 publications 1,163+

This scientist: 981 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,163 publications or more.

View publications distribution as a table
Number of Materials Science scientists by publication count, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
Publications Scientists This scientist
50–69 28
70–89 152
90–109 356
110–129 487
130–149 723
150–169 835
170–189 850
190–209 891
210–229 862
230–249 766
250–269 726
270–289 665
290–309 593
310–329 537
330–349 477
350–369 440
370–389 356
390–409 321
410–429 256
430–449 246
450–469 216
470–489 212
490–509 174
510–529 194
530–549 162
550–569 131
570–589 111
590–609 103
610–629 99
630–649 77
650–669 92
670–689 56
690–709 53
710–729 53
730–749 38
750–769 52
770–789 43
790–809 38
810–829 34
830–849 25
850–869 18
870–889 20
890–909 24
910–929 27
930–949 20
950–969 17
970–989 10 981
990–1,009 16
1,010–1,029 13
1,030–1,049 12
1,050–1,069 9
1,070–1,089 8
1,090–1,109 7
1,110–1,129 9
1,130–1,149 2
1,150–1,162 5
1,163+ 100
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Karl Leo D-index placement in Materials Science in 2026

The chart shows the D-index (discipline H-index) distribution of Materials Science scientists ranked by Research.com in 2026. The highlighted bar marks where Karl Leo sits on this spectrum.

No. of scientists
200 400 600
Bar chart with 64 bars. Horizontal axis: D-Index, 40–41 to 165+. Vertical axis: number of scientists, 0 to 667. Most scientists, 667, have 52–53 D-Index. The last bar groups every scientist with 165 D-Index or more. The highlighted bar, 128–129 D-Index, is where this scientist sits. 40–41 D-Index: 211 scientists 42–43 D-Index: 450 scientists 44–45 D-Index: 612 scientists 46–47 D-Index: 612 scientists 48–49 D-Index: 598 scientists 50–51 D-Index: 657 scientists 52–53 D-Index: 667 scientists 54–55 D-Index: 621 scientists 56–57 D-Index: 597 scientists 58–59 D-Index: 610 scientists 60–61 D-Index: 587 scientists 62–63 D-Index: 606 scientists 64–65 D-Index: 533 scientists 66–67 D-Index: 490 scientists 68–69 D-Index: 469 scientists 70–71 D-Index: 378 scientists 72–73 D-Index: 421 scientists 74–75 D-Index: 359 scientists 76–77 D-Index: 323 scientists 78–79 D-Index: 299 scientists 80–81 D-Index: 230 scientists 82–83 D-Index: 210 scientists 84–85 D-Index: 195 scientists 86–87 D-Index: 203 scientists 88–89 D-Index: 175 scientists 90–91 D-Index: 175 scientists 92–93 D-Index: 142 scientists 94–95 D-Index: 121 scientists 96–97 D-Index: 117 scientists 98–99 D-Index: 107 scientists 100–101 D-Index: 88 scientists 102–103 D-Index: 85 scientists 104–105 D-Index: 68 scientists 106–107 D-Index: 62 scientists 108–109 D-Index: 57 scientists 110–111 D-Index: 45 scientists 112–113 D-Index: 49 scientists 114–115 D-Index: 50 scientists 116–117 D-Index: 34 scientists 118–119 D-Index: 38 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 29 scientists 124–125 D-Index: 28 scientists 126–127 D-Index: 24 scientists 128–129 D-Index: 33 scientists 130–131 D-Index: 28 scientists 132–133 D-Index: 21 scientists 134–135 D-Index: 20 scientists 136–137 D-Index: 23 scientists 138–139 D-Index: 17 scientists 140–141 D-Index: 12 scientists 142–143 D-Index: 17 scientists 144–145 D-Index: 21 scientists 146–147 D-Index: 13 scientists 148–149 D-Index: 11 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 13 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 4 scientists 162–163 D-Index: 4 scientists 164 D-Index: 3 scientists 165+ D-Index: 98 scientists
40–41 D-Index 165+

This scientist: 129 D-Index — 97th percentile

97% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 165 D-Index or more.

View D-Index distribution as a table
Number of Materials Science scientists by D-index, Research.com 2026 ranking edition. Based on 12,847 ranked scientists.
D-Index Scientists This scientist
40–41 211
42–43 450
44–45 612
46–47 612
48–49 598
50–51 657
52–53 667
54–55 621
56–57 597
58–59 610
60–61 587
62–63 606
64–65 533
66–67 490
68–69 469
70–71 378
72–73 421
74–75 359
76–77 323
78–79 299
80–81 230
82–83 210
84–85 195
86–87 203
88–89 175
90–91 175
92–93 142
94–95 121
96–97 117
98–99 107
100–101 88
102–103 85
104–105 68
106–107 62
108–109 57
110–111 45
112–113 49
114–115 50
116–117 34
118–119 38
120–121 37
122–123 29
124–125 28
126–127 24
128–129 33 129
130–131 28
132–133 21
134–135 20
136–137 23
138–139 17
140–141 12
142–143 17
144–145 21
146–147 13
148–149 11
150–151 14
152–153 13
154–155 9
156–157 10
158–159 7
160–161 4
162–163 4
164 3
165+ 98
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Research.com Recognitions

  • 2022 - Research.com Materials Science in Germany Leader Award
  • 2016 - OSA Fellows Karl Leo Technische Universität Dresden, Germany For discoveries in optoelectronic phenomena, such as Bloch oscillations, and for novel devices based on organic semiconductors.
  • 2014 - Member of the European Academy of Sciences

Overview

Karl Leo is affiliated with TU Dresden in Germany and has contributed extensively to research in engineering and materials science. Their work primarily spans electrical and electronic engineering, polymers and plastics, materials chemistry, biomedical engineering, and atomic and molecular physics, and optics.

Their research focuses on topics such as organic electronics and photovoltaics, conducting polymers and applications, perovskite materials and applications, organic light-emitting diodes research, advanced memory and neural computing, advanced sensor and energy harvesting materials, and analytical chemistry and sensors.

Karl Leo has published frequently in several scientific venues, including:

  • ACS Applied Materials & Interfaces
  • Advanced Functional Materials
  • Nature Communications
  • Advanced Electronic Materials
  • Advanced Optical Materials

Some notable recent papers authored or coauthored by Karl Leo include:

  • Organic Solar Cells-The Path to Commercial Success, 2020, Advanced Energy Materials
  • Reverse dark current in organic photodetectors and the major role of traps as source of noise, 2021, Nature Communications
  • Bioinspiration in light harvesting and catalysis, 2020, Nature Reviews Materials
  • Narrowband organic photodetectors - towards miniaturized, spectroscopic sensing, 2021, Materials Horizons
  • Roadmap on organic-inorganic hybrid perovskite semiconductors and devices, 2021, APL Materials

Among frequent collaborators of Karl Leo are Hans Kleemann, Johannes Benduhn, Shu-Jen Wang, Donato Spoltore, and Shen Xing.

Their contributions have been recognized through awards including:

  • OSA Fellows, 2016, for discoveries in optoelectronic phenomena such as Bloch oscillations and novel devices based on organic semiconductors
  • Member of the European Academy of Sciences, 2014

Best Publications

  • White organic light-emitting diodes with fluorescent tube efficiency

    Sebastian Reineke;Frank Lindner;Gregor Schwartz;Nico Seidler

  • Highly efficient organic devices based on electrically doped transport layers.

    K. Walzer;B. Maennig;M. Pfeiffer;K. Leo

  • Highly Conductive PEDOT:PSS Electrode with Optimized Solvent and Thermal Post-Treatment for ITO-Free Organic Solar Cells

    Yong Hyun Kim;Christoph Sachse;Michael L. Machala;Christian May

  • Efficiency Roll-Off in Organic Light-Emitting Diodes

    Caroline Murawski;Karl Leo;Malte C. Gather

  • Coherent submillimeter-wave emission from Bloch oscillations in a semiconductor superlattice

    Christian Waschke;Hartmut G. Roskos;Ralf Schwedler;Karl Leo

  • Triplet-exciton quenching in organic phosphorescent light-emitting diodes with Ir-based emitters

    Sebastian Reineke;Karsten Walzer;Karl Leo

  • High-efficiency and low-voltage p‐i‐n electrophosphorescent organic light-emitting diodes with double-emission layers

    Gufeng He;Martin Pfeiffer;Karl Leo;Michael Hofmann

  • Optical investigation of Bloch oscillations in a semiconductor superlattice.

    J. Feldmann;K. Leo;J. Shah;D. A. B. Miller

  • Degradation Mechanisms and Reactions in Organic Light-Emitting Devices.

    Sebastian Scholz;Denis Kondakov;Björn Lüssem;Karl Leo

  • White organic light-emitting diodes: Status and perspective

    Sebastian Reineke;Michael Thomschke;Björn Lüssem;Karl Leo

  • White organic light-emitting diodes: Status and perspective

    Sebastian Reineke;Michael Thomschke;Björn Lüssem;Karl Leo

  • LOW VOLTAGE ORGANIC LIGHT EMITTING DIODES FEATURING DOPED PHTHALOCYANINE AS HOLE TRANSPORT MATERIAL

    J. Blochwitz;M. Pfeiffer;T. Fritz;K. Leo

  • Doped Organic Transistors.

    Björn Lüssem;Chang-Min Keum;Daniel Kasemann;Ben Naab

  • Doped organic semiconductors: Physics and application in light emitting diodes

    M Pfeiffer;K Leo;X Zhou;J.S Huang

  • Coherent submillimeter-wave emission from charge oscillations in a double-well potential.

    H. G. Roskos;M. C. Nuss;Jagdeep Shah;K. Leo

  • Doping of organic semiconductors

    Unknown

  • Femtosecond energy relaxation in π-conjugated polymers

    R. Kersting;R. Kersting;U. Lemmer;U. Lemmer;R. F. Mahrt;R. F. Mahrt;K. Leo;K. Leo

  • Triplet Harvesting in Hybrid White Organic Light‐Emitting Diodes

    Gregor Schwartz;Sebastian Reineke;Thomas Conrad Rosenow;Karsten Walzer

  • Low-voltage organic electroluminescent devices using pin structures

    Jingsong Huang;Martin Pfeiffer;Ansgar Werner;Jan Blochwitz

  • Organic p -i- n solar cells

    B. Maennig;J. Drechsel;D. Gebeyehu;P. Simon

  • Very-low-operating-voltage organic light-emitting diodes using a p-doped amorphous hole injection layer

    X. Zhou;M. Pfeiffer;J. Blochwitz;A. Werner

  • Harvesting Triplet Excitons from Fluorescent Blue Emitters in White Organic Light‐Emitting Diodes

    Gregor Schwartz;Martin Pfeiffer;Sebastian Reineke;Karsten Walzer

  • Controlled doping of phthalocyanine layers by cosublimation with acceptor molecules: A systematic Seebeck and conductivity study

    M. Pfeiffer;A. Beyer;T. Fritz;K. Leo

Frequent Co-Authors

Moritz Riede
Moritz Riede University of Oxford
Björn Lüssem
Björn Lüssem Kent State University
Malte C. Gather
Malte C. Gather University of St Andrews
Heinrich Kurz
Heinrich Kurz RWTH Aachen University
Koen Vandewal
Koen Vandewal Hasselt University
Torsten Fritz
Torsten Fritz Friedrich Schiller University Jena
Jagdeep Shah
Jagdeep Shah Defense Advanced Research Projects Agency
Wolfgang Tress
Wolfgang Tress Zurich University of Applied Sciences
Peter Bäuerle
Peter Bäuerle University of Ulm

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