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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Materials Science 67 5067 4903 85 80 334 17780

Karl Krämer publications per year

The chart shows the history of publications by Karl Krämer between 1989 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Karl Krämer published across 37 years, from 1989 to 2025, averaging 10.8 papers a year. Output peaked at 35 publications in 2014. 13 of the 400 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1989 to 2025. Vertical axis: number of publications, 0 to 35. Peak 35 publications in 2014. 1989: 3 publications 1990: 1 publication 1991: 2 publications 1992: 1 publication 1993: 2 publications 1994: 4 publications 1995: 2 publications 1996: 3 publications 1997: 2 publications 1998: 2 publications 1999: 8 publications 2000: 12 publications 2001: 9 publications 2002: 12 publications 2003: 10 publications 2004: 12 publications 2005: 17 publications 2006: 13 publications 2007: 14 publications 2008: 23 publications 2009: 13 publications 2010: 13 publications 2011: 15 publications 2012: 17 publications 2013: 22 publications 2014: 35 publications 2015: 15 publications 2016: 17 publications 2017: 23 publications 2018: 13 publications 2019: 10 publications 2020: 14 publications 2021: 13 publications 2022: 7 publications 2023: 8 publications 2024: 10 publications 2025: 3 publications
1989 2025

400 publications in total across all disciplines

View publications per year as a table
Karl Krämer: publications per year, 1989 to 2025
Year Publications
1989 3
1990 1
1991 2
1992 1
1993 2
1994 4
1995 2
1996 3
1997 2
1998 2
1999 8
2000 12
2001 9
2002 12
2003 10
2004 12
2005 17
2006 13
2007 14
2008 23
2009 13
2010 13
2011 15
2012 17
2013 22
2014 35
2015 15
2016 17
2017 23
2018 13
2019 10
2020 14
2021 13
2022 7
2023 8
2024 10
2025 3
Total 400
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Karl Krämer 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 Krämer 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, 330–349 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: 334 publications — 67th percentile

67% 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
330–349 477 334
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
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 Krämer 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 Krämer 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, 66–67 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: 67 D-Index — 61st percentile

61% 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 67
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
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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Overview

Karl Krämer is affiliated with the University of Bern in Switzerland. Their research focuses on multiple fields within Physics and Materials Science, with significant contributions in Materials Chemistry, Atomic and Molecular Physics and Optics, Condensed Matter Physics, Electrical and Electronic Engineering, and Radiation.

Their work covers several main topics, including:

  • Luminescence Properties of Advanced Materials
  • Radiation Detection and Scintillator Technologies
  • Perovskite Materials and Applications
  • Advanced Condensed Matter Physics
  • Atomic and Subatomic Physics Research
  • Physics of Superconductivity and Magnetism
  • Crystallization and Solubility Studies

Krämer has published extensively in various venues, with frequent appearances in the following journals and databases:

  • Journal of Luminescence
  • arXiv (Cornell University)
  • The Cambridge Structural Database
  • Optical Materials
  • Physical Review B

Notable recent publications include:

  • Size-dependent lanthanide energy transfer amplifies upconversion luminescence quantum yields, 2024, Nature Photonics
  • Yb3+ speciation and energy-transfer dynamics in quantum-cutting Yb3+-doped CsPbCl3 perovskite nanocrystals and single crystals, 2020, Physical Review Materials
  • Synergistic Effect of Dielectric Barrier Discharge Plasma and TiO2-Pillared Montmorillonite on the Degradation of Rhodamine B in an Aqueous Solution, 2020, Catalysts
  • Engineering near-infrared emitting scintillators with efficient Eu2+ → Sm2+ energy transfer, 2020, Journal of Luminescence
  • Notes on thermometric artefacts by Er3+ luminescence band interference, 2020, Journal of Luminescence

Krämer frequently collaborates with a number of coauthors, including:

  • Daniel Biner
  • P. Dorenbos
  • Silvio Decurtins
  • Shi-Xia Liu
  • Casper van Aarle

Best Publications

  • Hexagonal Sodium Yttrium Fluoride Based Green and Blue Emitting Upconversion Phosphors

    Karl Krämer;Daniel Biner;Gabriela Claudia Frei;Hans-Ulrich Güdel

  • Novel materials doped with trivalent lanthanides and transition metal ions showing near-infrared to visible photon upconversion

    J.F. Suyver;A. Aebischer;Daniel Biner;P. Gerner

  • Upconversion spectroscopy and properties of NaYF4 doped with Er3+, Tm3+ and/or Yb3+

    J.F. Suyver;J. Grimm;M.K. van Veen;D. Biner

  • Application of NaYF 4 : Er 3 + up-converting phosphors for enhanced near-infrared silicon solar cell response

    A. Shalav;B. S. Richards;T. Trupke;Karl Krämer

  • High-energy-resolution scintillator: Ce3+ activated LaBr3

    E. V. D. van Loef;P. Dorenbos;C. W. E. van Eijk;Karl Krämer

  • Bose–Einstein condensation of the triplet states in the magnetic insulator TlCuCl3

    Ch. Rüegg;N. Cavadini;A. Furrer;Hans-Ulrich Güdel

  • 50th anniversary of the Judd–Ofelt theory: An experimentalist's view of the formalism and its application

    Markus P. Hehlen;Mikhail G. Brik;Karl W. Krämer

  • Scintillation properties of LaBr3:Ce3+ crystals: fast, efficient and high-energy-resolution scintillators

    E.V.D van Loef;P Dorenbos;C.W.E van Eijk;K.W Krämer

  • Highly efficient near-infrared to visible up-conversion process in

    J.F. Suyver;J. Grimm;Karl Krämer;Hans-Ulrich Güdel

  • Enhancement of silicon solar cell efficiency by upconversion: Optical and electrical characterization

    S. Fischer;J. C. Goldschmidt;P. Löper;G. H. Bauer

  • Optical and scintillation properties of pure and Ce3+-doped Cs2LiYCl6 and Li3YCl6 : Ce3+ crystals

    C.M. Combes;P. Dorenbos;C.W.E. van Eijk;K.W. Krämer

  • Structural and Spectroscopic Characterization of Active Sites in a Family of Light-Emitting Sodium Lanthanide Tetrafluorides

    Annina Aebischer;Marc Hostettler;Jürg Hauser;Karl Krämer

  • Origin of the High Upconversion Green Luminescence Efficiency in β-NaYF4:2%Er3+,20%Yb3+

    C. Renero-Lecuna;R. Martín-Rodríguez;R. Valiente;J. González

  • Efficient visible to infrared quantum cutting through downconversion with the Er3+–Yb3+ couple in Cs3Y2Br9

    J. J. Eilers;D. Biner;J. T. van Wijngaarden;K. Krämer

  • Development and characterization of highly efficient new cerium doped rare earth halide scintillator materials

    K. W. Krämer;P. Dorenbos;H. U. Güdel;C. W. E. van Eijk

  • Optical and scintillation properties of cerium-doped LaCl3, LuBr3 and LuCl3

    O. Guillot-Noël;J.T.M. de Haas;P. Dorenbos;C.W.E. van Eijk

  • Highly Efficient IR to NIR Upconversion in Gd2O2S: Er3+ for Photovoltaic Applications

    Rosa Martín-Rodríguez;Stefan Fischer;Aruna Ivaturi;Benjamin Froehlich

  • Improvement of γ-ray energy resolution of LaBr3:Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping

    M. S. Alekhin;J. T. M. de Haas;I. V. Khodyuk;Karl W. Krämer

  • Scintillation and spectroscopy of the pure and Ce3+-doped elpasolites: Cs2LiYX6 (X = Cl, Br)

    E V D van Loef;P Dorenbos;C W E van Eijk;K W Krämer

  • Quantum and classical criticality in a dimerized quantum antiferromagnet

    P. Merchant;B. Normand;Karl Krämer;M. Boehm

  • Scintillation properties of LaCl/sub 3/:Ce/sup 3+/ crystals: fast, efficient, and high-energy resolution scintillators

    E.V.D. van Loef;L.P. Dorenbos;C.W.E. van Eijk;K. Kramer

  • Visible light emission upon near-infrared excitation in a transparent solution of nanocrystalline β-NaGdF4: Yb3+, Er3+

    Annina Aebischer;Stephan Heer;Daniel Biner;Karl Krämer

  • Photoinduced Nitrosyl Linkage Isomers Uncover a Variety of Unconventional Photorefractive Media

    Dominik Schaniel;Dominik Schaniel;Mirco Imlau;Thomas Weisemoeller;Theo Woike

  • Plasmon enhanced upconversion luminescence near gold nanoparticles–simulation and analysis of the interactions

    Stefan Fischer;Florian Hallermann;Toni Eichelkraut;Gero von Plessen

  • Level location and spectroscopy of Ce3+, Pr3+, Er3+, and Eu2+ in LaBr3

    P. Dorenbos;E.V.D. van Loef;A.P. Vink;E. van der Kolk

  • Scintillation Properties of and Self Absorption in ${ m SrI}_{2}\!:\!{ m Eu}^{2+}$

    M. S. Alekhin;J. T. M. de Haas;K. W. Kramer;P. Dorenbos

Frequent Co-Authors

Pieter Dorenbos
Pieter Dorenbos Delft University of Technology
Silvio Decurtins
Silvio Decurtins University of Bern
Bryce S. Richards
Bryce S. Richards Karlsruhe Institute of Technology
Jan Christoph Goldschmidt
Jan Christoph Goldschmidt Fraunhofer Institute for Solar Energy Systems
Martin Hermle
Martin Hermle Fraunhofer Institute for Solar Energy Systems
Andries Meijerink
Andries Meijerink Utrecht University
Hans U. Güdel
Hans U. Güdel University of Bern
Stefan W. Glunz
Stefan W. Glunz Fraunhofer Institute for Solar Energy Systems
Gerd Meyer
Gerd Meyer University of Cologne
Thierry Giamarchi
Thierry Giamarchi University of Geneva

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