World's Best Scientists 2026 revealed!

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Materials Science

D-Index
78
Citations
21402
World Ranking
2984
National Ranking
839

Chemistry

D-Index
78
Citations
21433
World Ranking
3806
National Ranking
1220

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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