D-Index & Metrics Best Publications

D-Index & Metrics D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines.

Discipline name D-index D-index (Discipline H-index) only includes papers and citation values for an examined discipline in contrast to General H-index which accounts for publications across all disciplines. Citations Publications World Ranking National Ranking
Engineering and Technology D-index 51 Citations 11,605 268 World Ranking 1892 National Ranking 742
Materials Science D-index 55 Citations 13,331 288 World Ranking 5575 National Ranking 1565

Research.com Recognitions

Awards & Achievements

2018 - Fellow of American Physical Society (APS) Citation For outstanding contributions in the field of IIIV semiconductor physics and multijunction photovoltaic science and groundbreaking work in the materials physics of ordering in IIIV alloys and optics and device physics for novel structures and record solar conversion efficiencies

Overview

What is he best known for?

The fields of study he is best known for:

  • Semiconductor
  • Statistics
  • Optics

His primary areas of study are Optoelectronics, Band gap, Solar cell, Optics and Analytical chemistry. The study incorporates disciplines such as Voltage and Solar energy in addition to Optoelectronics. His Solar energy study incorporates themes from Coupling and Tandem.

He interconnects Energy and Lattice in the investigation of issues within Band gap. The Solar cell study combines topics in areas such as Gallium arsenide, Semiconductor, Photocurrent, Photovoltaic system and Quantum efficiency. His studies deal with areas such as Alloy and Metalorganic vapour phase epitaxy as well as Analytical chemistry.

His most cited work include:

  • Band Anticrossing in GaInNAs Alloys (1313 citations)
  • 40.8% efficient inverted triple-junction solar cell with two independently metamorphic junctions (419 citations)
  • 1-eV solar cells with GaInNAs active layer (378 citations)

What are the main themes of his work throughout his whole career to date?

His primary scientific interests are in Optoelectronics, Solar energy, Solar cell, Band gap and Gallium arsenide. His Optoelectronics study integrates concerns from other disciplines, such as Tandem, Concentrator, Optics and Photovoltaic system. His study looks at the relationship between Solar energy and topics such as Epitaxy, which overlap with Silicon.

He works mostly in the field of Solar cell, limiting it down to topics relating to Photocurrent and, in certain cases, Photoconductivity. His biological study spans a wide range of topics, including Thin film, Semiconductor and Photoluminescence. His Gallium arsenide research incorporates elements of Substrate and Analytical chemistry.

He most often published in these fields:

  • Optoelectronics (49.06%)
  • Solar energy (23.32%)
  • Solar cell (20.11%)

What were the highlights of his more recent work (between 2012-2021)?

  • Optoelectronics (49.06%)
  • Solar cell (20.11%)
  • Solar energy (23.32%)

In recent papers he was focusing on the following fields of study:

Daniel J. Friedman focuses on Optoelectronics, Solar cell, Solar energy, Photovoltaic system and Band gap. His Optoelectronics research incorporates themes from Concentrator, Optics and Tandem. His Solar cell study combines topics from a wide range of disciplines, such as Photocurrent, Anti-reflective coating and Operating temperature.

His studies in Solar energy integrate themes in fields like Hybrid solar cell and Polymer solar cell. His Photovoltaic system study combines topics in areas such as Spectral bands, Reflection loss and Solar power. His Band gap research is multidisciplinary, incorporating elements of Multijunction photovoltaic cell, Broadband, Semiconductor and Quantum efficiency.

Between 2012 and 2021, his most popular works were:

  • Optical enhancement of the open-circuit voltage in high quality GaAs solar cells (203 citations)
  • Enhanced external radiative efficiency for 20.8 efficient single-junction GaInP solar cells (188 citations)
  • Quadruple-Junction Inverted Metamorphic Concentrator Devices (85 citations)

In his most recent research, the most cited papers focused on:

  • Semiconductor
  • Statistics
  • Optics

His primary areas of investigation include Optoelectronics, Solar energy, Solar cell, Optics and Gallium arsenide. His Optoelectronics research includes themes of Concentrator, Photovoltaic system and Voltage. His Solar energy research includes elements of Hybrid approach and Hybrid solar cell, Polymer solar cell.

Daniel J. Friedman has researched Solar cell in several fields, including Photocurrent and Anti-reflective coating. His biological study spans a wide range of topics, including Solar cell efficiency and Theory of solar cells. His Gallium arsenide study combines topics from a wide range of disciplines, such as Substrate, Semiconductor device and Heterojunction.

This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.

Best Publications

Band Anticrossing in GaInNAs Alloys

W. Shan;W. Walukiewicz;J. W. Ager;E. E. Haller.
Physical Review Letters (1999)

1994 Citations

40.8% efficient inverted triple-junction solar cell with two independently metamorphic junctions

J. F. Geisz;D. J. Friedman;J. S. Ward;A. Duda.
Applied Physics Letters (2008)

604 Citations

High-efficiency GaInP∕GaAs∕InGaAs triple-junction solar cells grown inverted with a metamorphic bottom junction

J. F. Geisz;Sarah Kurtz;M. W. Wanlass;J. S. Ward.
Applied Physics Letters (2007)

583 Citations

1-eV solar cells with GaInNAs active layer

D.J. Friedman;J.F. Geisz;S.R. Kurtz;J.M. Olson.
Journal of Crystal Growth (1998)

477 Citations

29.5%‐efficient GaInP/GaAs tandem solar cells

K. A. Bertness;Sarah R. Kurtz;D. J. Friedman;A. E. Kibbler.
Applied Physics Letters (1994)

421 Citations

III-N-V semiconductors for solar photovoltaic applications

J F Geisz;D J Friedman.
Semiconductor Science and Technology (2002)

408 Citations

Nitrogen-Activated Transitions, Level Repulsion, and Band Gap Reduction in GaAs 1-x N x with x < 0.03

J. D. Perkins;A. Mascarenhas;Yong Zhang;J. F. Geisz.
Physical Review Letters (1999)

374 Citations

Photocurrent of 1 eV GaInNAs lattice-matched to GaAs

J.F. Geisz;D.J. Friedman;J.M. Olson;S.R. Kurtz.
Journal of Crystal Growth (1998)

357 Citations

Structural changes during annealing of GaInAsN

Sarah Kurtz;J. Webb;L. Gedvilas;D. Friedman.
Applied Physics Letters (2001)

299 Citations

Optical enhancement of the open-circuit voltage in high quality GaAs solar cells

M. A. Steiner;J. F. Geisz;I. García;D. J. Friedman.
Journal of Applied Physics (2013)

282 Citations

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