Alexandre W. Walker

1.4k total citations
57 papers, 1.1k citations indexed

About

Alexandre W. Walker is a scholar working on Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics and Materials Chemistry. According to data from OpenAlex, Alexandre W. Walker has authored 57 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Electrical and Electronic Engineering, 40 papers in Atomic and Molecular Physics, and Optics and 11 papers in Materials Chemistry. Recurrent topics in Alexandre W. Walker's work include solar cell performance optimization (39 papers), Semiconductor Quantum Structures and Devices (36 papers) and Chalcogenide Semiconductor Thin Films (23 papers). Alexandre W. Walker is often cited by papers focused on solar cell performance optimization (39 papers), Semiconductor Quantum Structures and Devices (36 papers) and Chalcogenide Semiconductor Thin Films (23 papers). Alexandre W. Walker collaborates with scholars based in Canada, Germany and United States. Alexandre W. Walker's co-authors include Luiz A. T. Machado, William B. Rossow, Oliver Höhn, Karin Hinzer, Andreas W. Bett, Frank Dimroth, Jeffrey F. Wheeldon, David Lackner, Henning Helmers and Daniel Neves Micha and has published in prestigious journals such as SHILAP Revista de lepidopterología, Applied Physics Letters and Journal of Applied Physics.

In The Last Decade

Alexandre W. Walker

54 papers receiving 1.0k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Alexandre W. Walker Canada 16 718 349 261 255 190 57 1.1k
Mi‐Hee Ji United States 17 190 0.3× 134 0.4× 178 0.7× 200 0.8× 270 1.4× 42 790
Song Yang China 15 289 0.4× 217 0.6× 388 1.5× 388 1.5× 400 2.1× 36 1.1k
Nils Lundt Germany 13 292 0.4× 445 1.3× 74 0.3× 49 0.2× 314 1.7× 16 740
Shufang Wang China 18 404 0.6× 250 0.7× 13 0.0× 67 0.3× 590 3.1× 109 1.1k
Rohit Deshpande United States 10 320 0.4× 46 0.1× 163 0.6× 35 0.1× 229 1.2× 21 1.4k
Theresa Magorian Friedlmeier Germany 17 1.8k 2.5× 330 0.9× 155 0.6× 171 0.7× 1.6k 8.6× 43 2.1k
Martin Fitzner United Kingdom 12 72 0.1× 152 0.4× 213 0.8× 36 0.1× 308 1.6× 17 572
Ming Wang China 15 273 0.4× 101 0.3× 54 0.2× 20 0.1× 255 1.3× 102 1.0k
Mathieu Jeannin France 14 446 0.6× 210 0.6× 70 0.3× 56 0.2× 83 0.4× 35 939
Joost Beckers Netherlands 10 90 0.1× 53 0.2× 60 0.2× 166 0.7× 128 0.7× 22 491

Countries citing papers authored by Alexandre W. Walker

Since Specialization
Citations

This map shows the geographic impact of Alexandre W. Walker'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 Alexandre W. Walker with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Alexandre W. Walker more than expected).

Fields of papers citing papers by Alexandre W. Walker

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Alexandre W. Walker. 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 Alexandre W. Walker. The network helps show where Alexandre W. Walker may publish in the future.

Co-authorship network of co-authors of Alexandre W. Walker

This figure shows the co-authorship network connecting the top 25 collaborators of Alexandre W. Walker. A scholar is included among the top collaborators of Alexandre W. Walker 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 Alexandre W. Walker. Alexandre W. Walker is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Helmers, Henning, R. F. Hunter, Oliver Höhn, et al.. (2025). Multi-junction laser power converters exceeding 50% efficiency in the short wavelength infrared. Cell Reports Physical Science. 6(6). 102610–102610. 2 indexed citations
2.
Hunter, R. F., Yuri Grinberg, Christopher E. Valdivia, et al.. (2025). Machine learning enhanced design and knowledge discovery for multi-junction photonic power converters. Scientific Reports. 15(1). 32987–32987.
3.
Almora, Osbel, Alexandre W. Walker, Lluı́s F. Marsal, et al.. (2025). Quasi-open circuit response times of single- and multi-junction InGaAs photonic power converters. Journal of Applied Physics. 138(18).
4.
Hunter, R. F., Alexandre W. Walker, Yuri Grinberg, et al.. (2024). Quantifying the luminescent coupling process in C-band multi-junction photonic power converters. 27–27. 2 indexed citations
5.
Valdivia, Christopher E., Henning Helmers, Oliver Höhn, et al.. (2023). High-Performance Multi-Junction C-Band Photonic Power Converters: Calibrated Optoelectronic Model for Next Generation Designs. 1–1. 1 indexed citations
6.
Walker, Alexandre W., et al.. (2022). Zn diffusion depth effect on photoresponse uniformity in InP/InGaAs avalanche photodiodes. Optical and Quantum Electronics. 54(9).
7.
Ma, Rubin, J. Lapointe, C. Storey, et al.. (2020). Impacts on access resistance of InP high electron mobility transistors from wafer processing. Journal of Vacuum Science & Technology B Nanotechnology and Microelectronics Materials Processing Measurement and Phenomena. 38(2). 1 indexed citations
8.
Pitts, O. J., et al.. (2020). Dopant Depth Distribution Effects on the Gain Profile of Avalanche Photodiodes Fabricated by Zn Diffusion. NPARC. NoTu2F.1–NoTu2F.1. 1 indexed citations
9.
Walker, Alexandre W., Jonas Schön, & Frank Dimroth. (2018). Extracting Nonradiative Parameters in III–V Semiconductors Using Double Heterostructures on Active p-n Junctions. IEEE Journal of Photovoltaics. 8(2). 633–639. 7 indexed citations
10.
Walker, Alexandre W., et al.. (2017). Procedure to decouple reflectance and down-shifting effects in luminescent down-shifting enhanced photovoltaics. Optics Express. 25(12). A530–A530. 11 indexed citations
11.
Walker, Alexandre W., et al.. (2017). Radiation hardness of AlGaAs n-i-p solar cells with higher bandgap intrinsic region. Solar Energy Materials and Solar Cells. 168. 234–240. 6 indexed citations
12.
Rosenwaks, Y., et al.. (2016). Minority carrier recombination of ordered Ga0.51In0.49P at high temperatures. Applied Physics Letters. 109(22). 7 indexed citations
13.
Walker, Alexandre W., et al.. (2014). Positioning and doping effects on quantum dot multi-junction solar cell performance. Progress in Photovoltaics Research and Applications. 23(6). 793–799. 9 indexed citations
14.
Walker, Alexandre W., et al.. (2014). Enhanced Efficiencies for High-Concentration, Multijunction PV Systems by Optimizing Grid Spacing under Nonuniform Illumination. International Journal of Photoenergy. 2014. 1–7. 19 indexed citations
15.
Bouchard, Frédéric, Alexandre W. Walker, Zetian Mi, & Karin Hinzer. (2013). Modeling a monocrystalline Cu(In,Ga)Se2single junction solar cell grown on a GaAs substrate. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 8915. 891507–891507. 4 indexed citations
16.
Walker, Alexandre W., et al.. (2012). Modeling down-conversion and down-shifting for photovoltaic applications. 73. 48–52. 5 indexed citations
17.
Wheeldon, Jeffrey F., Alexandre W. Walker, Christopher E. Valdivia, et al.. (2011). Temperature-Dependent Quantum Efficiency of Quantum Dot Enhanced Multi-Junction Solar Cells. AIP conference proceedings. 50–53. 2 indexed citations
18.
Wheeldon, Jeffrey F., Christopher E. Valdivia, Alexandre W. Walker, et al.. (2010). Performance comparison of AlGaAs, GaAs and InGaP tunnel junctions for concentrated multijunction solar cells. Progress in Photovoltaics Research and Applications. 19(4). 442–452. 61 indexed citations
19.
Walker, Alexandre W., Jeffrey F. Wheeldon, Christopher E. Valdivia, Gitanjali Kolhatkar, & Karin Hinzer. (2010). Simulation, modeling, and comparison of III-V tunnel junction designs for high efficiency metamorphic multi-junction solar cells. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 7750. 77502X–77502X. 4 indexed citations
20.
Machado, Luiz A. T., et al.. (1998). Life Cycle Variations of Mesoscale Convective Systems over the Americas. Monthly Weather Review. 126(6). 1630–1654. 286 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.

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