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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 78 2982 2879 837 785 362 21402
Chemistry 78 3806 3448 1219 1017 355 21433

Neal R. Armstrong publications per year

The chart shows the history of publications by Neal R. Armstrong between 1970 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Neal R. Armstrong published across 56 years, from 1970 to 2025, averaging 6.8 papers a year. Output peaked at 25 publications in 1999. 8 of the 378 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1970 to 2025. Vertical axis: number of publications, 0 to 25. Peak 25 publications in 1999. 1970: 1 publication 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 1 publication 1975: 2 publications 1976: 4 publications 1977: 4 publications 1978: 2 publications 1979: 4 publications 1980: 3 publications 1981: 4 publications 1982: 6 publications 1983: 7 publications 1984: 8 publications 1985: 12 publications 1986: 8 publications 1987: 3 publications 1988: 6 publications 1989: 7 publications 1990: 6 publications 1991: 9 publications 1992: 7 publications 1993: 7 publications 1994: 13 publications 1995: 10 publications 1996: 7 publications 1997: 8 publications 1998: 16 publications 1999: 25 publications 2000: 5 publications 2001: 9 publications 2002: 9 publications 2003: 9 publications 2004: 7 publications 2005: 11 publications 2006: 6 publications 2007: 9 publications 2008: 11 publications 2009: 15 publications 2010: 15 publications 2011: 13 publications 2012: 10 publications 2013: 6 publications 2014: 1 publication 2015: 9 publications 2016: 5 publications 2017: 9 publications 2018: 2 publications 2019: 2 publications 2020: 3 publications 2021: 5 publications 2022: 6 publications 2023: 3 publications 2024: 3 publications 2025: 5 publications
1970 2025

378 publications in total across all disciplines

View publications per year as a table
Neal R. Armstrong: publications per year, 1970 to 2025
Year Publications
1970 1
1971 0
1972 0
1973 0
1974 1
1975 2
1976 4
1977 4
1978 2
1979 4
1980 3
1981 4
1982 6
1983 7
1984 8
1985 12
1986 8
1987 3
1988 6
1989 7
1990 6
1991 9
1992 7
1993 7
1994 13
1995 10
1996 7
1997 8
1998 16
1999 25
2000 5
2001 9
2002 9
2003 9
2004 7
2005 11
2006 6
2007 9
2008 11
2009 15
2010 15
2011 13
2012 10
2013 6
2014 1
2015 9
2016 5
2017 9
2018 2
2019 2
2020 3
2021 5
2022 6
2023 3
2024 3
2025 5
Total 378
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Neal R. Armstrong 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 Neal R. Armstrong 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, 350–369 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: 362 publications — 72nd percentile

72% 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
350–369 440 362
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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Neal R. Armstrong 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 Neal R. Armstrong 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, 78–79 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: 78 D-Index — 77th percentile

77% 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 78
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

Neal R. Armstrong is affiliated with the University of Arizona in the United States. Their research primarily centers on engineering and materials science, with a focus on electrical and electronic engineering as well as materials chemistry. These fields underpin Armstrong's exploration into advanced materials and their practical applications.

The main topics Armstrong addresses include perovskite materials and applications, chalcogenide semiconductor thin films, and quantum dots synthesis and properties. Additionally, the scientist's work covers electronic and structural properties of oxides, conducting polymers and their applications, electrochemical analysis, and advanced battery technologies research.

Armstrong has contributed to several recent papers, documenting developments in material interfaces, surface passivation techniques, and quantum dot behavior. Notable publications include:

  • "Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells" (2020, Joule)
  • "Reducing Surface Recombination Velocity of Methylammonium-Free Mixed-Cation Mixed-Halide Perovskites via Surface Passivation" (2021, Chemistry of Materials)
  • "Influence of the Processing Environment on the Surface Composition and Electronic Structure of Size-Quantized CdSe Quantum Dots" (2020, The Journal of Physical Chemistry C)
  • "Defect quantification in metal halide perovskites: the solid-state electrochemical alternative" (2021, Energy & Environmental Science)
  • "Extremely Long-Lived Charge Donor States Formed by Visible Irradiation of Quantum Dots" (2024, ACS Nano)

The scientist publishes frequently in venues such as ACS Energy Letters, The Journal of Physical Chemistry C, Chemistry of Materials, arXiv (Cornell University), and Joule. These journals reflect the breadth and interdisciplinary nature of Armstrong's work in chemistry, physics, and engineering.

Collaboration is a significant aspect of Armstrong's research activities. Frequent co-authors include Erin L. Ratcliff, Michel De Keersmaecker, R. Clayton Shallcross, Joseph J. Berry, and Margherita Taddei. These partnerships have contributed to an active and sustained research output.

Best Publications

  • Characterization of Indium−Tin Oxide Interfaces Using X-ray Photoelectron Spectroscopy and Redox Processes of a Chemisorbed Probe Molecule: Effect of Surface Pretreatment Conditions

    Carrie Donley;Darren Dunphy;David Paine;Chet Carter

  • Overcoming Redox Reactions at Perovskite-Nickel Oxide Interfaces to Boost Voltages in Perovskite Solar Cells

    Caleb C. Boyd;Caleb C. Boyd;Caleb C. Boyd;R. Clayton Shallcross;Taylor Moot;Ross Kerner

  • Interface Dipoles Arising from Self-Assembled Monolayers on Gold: UV−Photoemission Studies of Alkanethiols and Partially Fluorinated Alkanethiols

    Dana M. Alloway;Michael Hofmann;Michael Hofmann;Darrin L. Smith;Nadine E. Gruhn

  • Evidence for near-Surface NiOOH Species in Solution-Processed NiOx Selective Interlayer Materials: Impact on Energetics and the Performance of Polymer Bulk Heterojunction Photovoltaics

    Erin L. Ratcliff;Jens Meyer;K. Xerxes Steirer;Andres Garcia

  • The Modification of Indium Tin Oxide with Phosphonic Acids: Mechanism of Binding, Tuning of Surface Properties, and Potential for Use in Organic Electronic Applications

    Peter J. Hotchkiss;Simon C. Jones;Sergio A. Paniagua;Asha Sharma

  • Aluminum based cathode structure for enhanced electron injection in electroluminescent organic devices

    G. E. Jabbour;B. Kippelen;N. R. Armstrong;N. Peyghambarian

  • Selective Interlayers and Contacts in Organic Photovoltaic Cells

    Erin L. Ratcliff;Brian Zacher;Neal R. Armstrong

  • Bright blue organic light-emitting diode with improved color purity using a LiF/Al cathode

    S. E. Shaheen;G. E. Jabbour;M. M. Morrell;Y. Kawabe

  • Enhanced Efficiency in Plastic Solar Cells via Energy Matched Solution Processed NiOx Interlayers

    K. Xerxes Steirer;K. Xerxes Steirer;Paul F. Ndione;N. Edwin Widjonarko;Matthew T. Lloyd

  • Interface electronic structure of organic semiconductors with controlled doping levels

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

  • Indium Tin Oxide Alternatives—High Work Function Transparent Conducting Oxides as Anodes for Organic Light‐Emitting Diodes

    J. Cui;A. Wang;N. L. Edleman;J. Ni

  • High-performance hole-transport layers for polymer light-emitting diodes. Implementation of organosiloxane cross-linking chemistry in polymeric electroluminescent devices.

    He Yan;Paul Lee;Neal R. Armstrong;Amy Graham

  • X-ray photoelectron/Auger electron spectroscopic studies of tin and indium metal foils and oxides

    Albert W. C. Lin;Neal R. Armstrong;Theodore. Kuwana

  • Phosphonic Acid Modification of Indium−Tin Oxide Electrodes: Combined XPS/UPS/Contact Angle Studies†

    Sergio A. Paniagua;Peter J. Hotchkiss;Simon C. Jones;Seth R. Marder

  • Phosphonic Acids for Interfacial Engineering of Transparent Conductive Oxides

    Sergio A. Paniagua;Anthony J. Giordano;O'Neil L. Smith;Stephen Barlow

  • Substituted aluminum and zinc quinolates with blue-shifted absorbance/luminescence bands: Synthesis and spectroscopic, photoluminescence, and electroluminescence characterization

    T. A. Hopkins;K. Meerholz;S. Shaheen;M. L. Anderson

  • Interface modification of ITO thin films: organic photovoltaic cells

    Neal R Armstrong;Chet Carter;Carrie Donley;Adam Simmonds

  • X-ray photoelectron spectroscopy of TiO2 and other titanate electrodes and various standard Titanium oxide materials: Surface compositional changes of the TiO2 electrode during photoelectrolysis

    Curt N. Sayers;Neal R. Armstrong

  • Electrochemistry and Electrogenerated Chemiluminescence Processes of the Components of Aluminum Quinolate/Triarylamine, and Related Organic Light-Emitting Diodes

    J. D. Anderson;E. M. McDonald;P. A. Lee;M. L. Anderson

  • Organic/Organic' heterojunctions: organic light emitting diodes and organic photovoltaic devices

    Neal R. Armstrong;Weining Wang;Dana M. Alloway;Diogenes Placencia

  • Liquid-crystal approaches to organic photovoltaics

    Bernard Kippelen;Seunghyup Yoo;Joshua A. Haddock;Benoit Domercq

Frequent Co-Authors

S. Scott Saavedra
S. Scott Saavedra University of Arizona
Bernard Kippelen
Bernard Kippelen Georgia Institute of Technology
Seth R. Marder
Seth R. Marder University of Colorado Boulder
Nasser Peyghambarian
Nasser Peyghambarian University of Arizona
Bruce A. Parkinson
Bruce A. Parkinson University of Wyoming
Ghassan E. Jabbour
Ghassan E. Jabbour University of Ottawa
David F. O'Brien
David F. O'Brien University of Arizona
Sean E. Shaheen
Sean E. Shaheen University of Colorado Boulder
Tobin J. Marks
Tobin J. Marks Northwestern University
Jeffrey Pyun
Jeffrey Pyun University of Arizona

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