John F. Geisz

13.6k total citations · 3 hit papers
264 papers, 10.5k citations indexed

About

John F. Geisz is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Biomedical Engineering. According to data from OpenAlex, John F. Geisz has authored 264 papers receiving a total of 10.5k indexed citations (citations by other indexed papers that have themselves been cited), including 237 papers in Electrical and Electronic Engineering, 175 papers in Atomic and Molecular Physics, and Optics and 46 papers in Biomedical Engineering. Recurrent topics in John F. Geisz's work include Semiconductor Quantum Structures and Devices (160 papers), solar cell performance optimization (159 papers) and Chalcogenide Semiconductor Thin Films (116 papers). John F. Geisz is often cited by papers focused on Semiconductor Quantum Structures and Devices (160 papers), solar cell performance optimization (159 papers) and Chalcogenide Semiconductor Thin Films (116 papers). John F. Geisz collaborates with scholars based in United States, Germany and Spain. John F. Geisz's co-authors include Daniel J. Friedman, Sarah Kurtz, Myles A. Steiner, J. M. Olson, J. M. Olson, W. Walukiewicz, Joel W. Ager, Ryan M. France, W. Shan and E. E. Haller and has published in prestigious journals such as Physical Review Letters, Nature Communications and Nature Materials.

In The Last Decade

John F. Geisz

253 papers receiving 10.1k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Band Anticrossing in GaInNAs Alloys

1999 1.3k citations Joel W. Ager, John F. Geisz et al. profile →
Six-junction III–V solar cells with 47.1% conversion efficiency under 143 Suns concentration

2020 468 citations John F. Geisz, Ryan M. France et al. profile →
Raising the one-sun conversion efficiency of III–V/Si solar cells to 32.8% for two junctions and 35.9% for three junctions

2017 438 citations John F. Geisz, Myles A. Steiner et al. profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
John F. Geisz United States	51	8.7k	6.2k	2.4k	2.1k	1.6k	264	10.5k
Antonio Martı́ Spain	44	6.7k 0.8×	5.8k 0.9×	495 0.2×	5.0k 2.4×	2.2k 1.4×	206	9.4k
Roger K. Lake United States	48	4.3k 0.5×	3.0k 0.5×	655 0.3×	4.4k 2.1×	1.2k 0.7×	212	7.7k
Hannah J. Joyce United Kingdom	41	3.5k 0.4×	2.2k 0.3×	548 0.2×	2.6k 1.2×	3.8k 2.3×	129	5.6k
Ke‐Qiu Chen China	55	5.2k 0.6×	2.9k 0.5×	278 0.1×	8.2k 3.9×	1.2k 0.7×	351	10.3k
Ryan M. France United States	28	4.3k 0.5×	1.6k 0.3×	306 0.1×	2.0k 1.0×	550 0.3×	113	5.0k
Winston V. Schoenfeld United States	34	3.8k 0.4×	4.5k 0.7×	394 0.2×	2.5k 1.2×	705 0.4×	189	6.5k
Myles A. Steiner United States	36	4.7k 0.5×	1.8k 0.3×	348 0.1×	1.3k 0.6×	919 0.6×	189	5.8k
Liangmo Mei China	37	2.4k 0.3×	1.5k 0.2×	618 0.3×	3.6k 1.7×	603 0.4×	262	5.6k
Jian‐Bai Xia China	44	3.5k 0.4×	3.4k 0.6×	1.0k 0.4×	5.3k 2.6×	801 0.5×	217	8.1k
J. R. Waldrop United States	34	3.8k 0.4×	2.5k 0.4×	616 0.3×	2.3k 1.1×	384 0.2×	75	5.6k

Countries citing papers authored by John F. Geisz

Since Specialization

Citations

This map shows the geographic impact of John F. Geisz's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John F. Geisz with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John F. Geisz more than expected).

Fields of papers citing papers by John F. Geisz

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John F. Geisz. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John F. Geisz. The network helps show where John F. Geisz may publish in the future.

Co-authorship network of co-authors of John F. Geisz

This figure shows the co-authorship network connecting the top 25 collaborators of John F. Geisz. A scholar is included among the top collaborators of John F. Geisz based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John F. Geisz. John F. Geisz is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Schulte, Kevin L., et al.. (2025). Suppression of phase separation in AlGaInAs compositionally graded buffers for 1550 nm photovoltaic converters on GaAs. Journal of Applied Physics. 137(3). 1 indexed citations

McMahon, William E., Kevin L. Schulte, John F. Geisz, et al.. (2024). In Situ Smoothing of Facets on Spalled GaAs(100) Substrates during OMVPE Growth of III–V Epilayers, Solar Cells, and Other Devices: The Impact of Surface Impurities/Dopants. Crystal Growth & Design. 24(8). 3218–3227. 2 indexed citations

Geisz, John F., Daniel J. Friedman, Myles A. Steiner, Ryan M. France, & Tao Song. (2023). Operando Temperature Measurements of Photovoltaic Laser Power Converter Devices Under Continuous High-Intensity Illumination. 1–1. 1 indexed citations

Mangum, John S., Anthony D. Rice, Jie Chen, et al.. (2022). High‐Efficiency Solar Cells Grown on Spalled Germanium for Substrate Reuse without Polishing. Advanced Energy Materials. 12(29). 16 indexed citations

VanSant, Kaitlyn T., Emily L. Warren, Jerónimo Buencuerpo, et al.. (2021). Optimization of four terminal rear heterojunction GaAs on Si interdigitated back contact tandem solar cells. Applied Physics Letters. 118(18). 15 indexed citations

McMahon, William E., Henning Schulte‐Huxel, Jerónimo Buencuerpo, et al.. (2021). Homogenous Voltage-Matched Strings Using Three-Terminal Tandem Solar Cells: Fundamentals and End Losses. IEEE Journal of Photovoltaics. 11(4). 1078–1086. 11 indexed citations

Yamaguchi, Masafumi, Frank Dimroth, John F. Geisz, & Nicholas J. Ekins‐Daukes. (2021). Multi-junction solar cells paving the way for super high-efficiency. Journal of Applied Physics. 129(24). 147 indexed citations

France, Ryan M., et al.. (2021). Graded buffer Bragg reflectors with high reflectivity and transparency for metamorphic optoelectronics. Journal of Applied Physics. 129(17). 15 indexed citations

Steiner, Myles A., Ryan M. France, Emmett E. Perl, et al.. (2019). Reverse Heterojunction (Al)GaInP Solar Cells for Improved Efficiency at Concentration. IEEE Journal of Photovoltaics. 10(2). 487–494. 12 indexed citations

10.

Lim, Haneol, James L. Young, John F. Geisz, et al.. (2019). High performance III-V photoelectrodes for solar water splitting via synergistically tailored structure and stoichiometry. Nature Communications. 10(1). 3388–3388. 57 indexed citations

11.

France, Ryan M., Pilar Espinet‐González, Nicholas J. Ekins‐Daukes, et al.. (2018). Multijunction Solar Cells With Graded Buffer Bragg Reflectors. IEEE Journal of Photovoltaics. 8(6). 1608–1615. 16 indexed citations

12.

Jain, Nikhil, Kevin L. Schulte, John F. Geisz, et al.. (2018). High-efficiency inverted metamorphic 1.7/1.1 eV GaInAsP/GaInAs dual-junction solar cells. Applied Physics Letters. 112(5). 54 indexed citations

13.

Schnabel, Manuel, Michael Rienäcker, Emily L. Warren, et al.. (2018). Equivalent Performance in Three-Terminal and Four-Terminal Tandem Solar Cells. IEEE Journal of Photovoltaics. 8(6). 1584–1589. 34 indexed citations

14.

Ilic, Ognjen, Colton R. Bukowsky, Lu Xu, et al.. (2018). Design Criteria for Micro-Optical Tandem Luminescent Solar Concentrators. IEEE Journal of Photovoltaics. 8(6). 1560–1567. 30 indexed citations

15.

Schulte, Kevin L., Myles A. Steiner, Matthew Young, & John F. Geisz. (2018). Internal Resistive Barriers Related to Zinc Diffusion During the Growth of Inverted Metamorphic Multijunction Solar Cells. IEEE Journal of Photovoltaics. 9(1). 167–173. 12 indexed citations

16.

Perl, Emmett E., John Simon, John F. Geisz, et al.. (2016). Measurements and Modeling of III-V Solar Cells at High Temperatures up to 400 <inline-formula> <tex-math notation="latex">${}^{\circ}$</tex-math> </inline-formula>C. IEEE Journal of Photovoltaics. 6(5). 1345–1352. 41 indexed citations

17.

Geisz, John F., et al.. (2006). Lattice-Mismatched GaAsP Solar Cells Grown on Silicon by OMVPE (Presentation). OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 3 indexed citations

18.

Friedman, Daniel J., John F. Geisz, Andrew G. Norman, M. W. Wanlass, & Sarah Kurtz. (2006). GaInAs 4th Junction for Next-Generation Lattice-Mismatched Multijunction Solar Cells. University of North Texas Digital Library (University of North Texas). 1 indexed citations

19.

Kurtz, Sarah, John F. Geisz, D. J. Friedman, et al.. (2005). Collection of photocarriers in Ga 1-xin xN yAs 1-y solar cells. Photovoltaic Specialists Conference. 707–710. 1 indexed citations

20.

Perlin, P., P. Wiśniewski, W. Knap, et al.. (1999). Large, nitrogen-induced increase of the electron effective mass in In{sub y}Ga{sub 1-y}N{sub x}As{sub 1-x}. Applied Physics Letters. 76(17). 12 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact