D. Walker

3.5k citations

58 papers · 1.9k · h-index 20

Impact in

Condensed Matter Physics top 0.5%
- GaN-based semiconductor devices and materials
Electronic, Optical and Magnetic Materials top 2%
- Ga2O3 and related materials

Papers in

Condensed Matter Physics 42
- GaN-based semiconductor devices and materials 42
Electronic, Optical and Magnetic Materials 24
- Ga2O3 and related materials 24

Co-authors: Patrick Kung (35 shared papers)Manijeh Razeghi (27 shared papers)A. Saxler (25 shared papers)M. Hamilton (7 shared papers)J. Diaz (5 shared papers)E. B. Stokes (6 shared papers)X. A. Cao (6 shared papers)J. Kretchmer (4 shared papers)
Journals: Applied Physics Letters (14 papers)Trauma Violence & Abuse (3 papers)Solid-State Electronics (2 papers)IEEE Electron Device Letters (1 paper)MRS Internet Journal of Nitride Semiconductor Research (1 paper)
Partner nations: United States Canada Australia

In The Last Decade

D. Walker

52 papers receiving 1.8k citations

Peers

Countries citing papers authored by D. Walker

Since Specialization

Citations

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

Fields of papers citing papers by D. Walker

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside D. Walker, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with D. Walker Line = papers co-authored together D. Walker links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 58 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Diffusion and tunneling currents in GaN/InGaN multiple quantum well light-emitting diodes IEEE Electron Device Letters ·X. A. Cao, E. B. Stokes, Peter M. Sandvik, S. F. LeBoeuf, J. Kretchmer, D. Walker	2002	203
2	High-speed, low-noise metal–semiconductor–metal ultraviolet photodetectors based on GaN Applied Physics Letters ·D. Walker, E. Monroy, Patrick Kung, Jun Wu, M. Hamilton, F.J. Sánchez, J. Diaz, Manijeh Razeghi	1999	163
3	Solar-blind AlGaN photodiodes with very low cutoff wavelength Applied Physics Letters ·D. Walker, V. Kumar, K. Mi, Peter Sandvik, Patrick Kung, X. H. Zhang, Manijeh Razeghi	2000	151
4	AlGaN ultraviolet photoconductors grown on sapphire Applied Physics Letters ·D. Walker, X. Zhang, Patrick Kung, A. Saxler, Sirus Javadpour, Jiao Xu, M. Razeghi	1996	150
5	High quality AIN and GaN epilayers grown on (00⋅1) sapphire, (100), and (111) silicon substrates Applied Physics Letters ·Patrick Kung, A. Saxler, X. Zhang, D. Walker, T. C. Wang, Ian T. Ferguson, Manijeh Razeghi	1995	145
6	High-quality visible-blind AlGaN p-i-n photodiodes Applied Physics Letters ·E. Monroy, M. Hamilton, D. Walker, Patrick Kung, F.J. Sánchez, Manijeh Razeghi	1999	124
7	Al x Ga 1−x N (0⩽x⩽1) ultraviolet photodetectors grown on sapphire by metal-organic chemical-vapor deposition Applied Physics Letters ·D. Walker, X. Zhang, A. Saxler, Patrick Kung, Jian Xu, M. Razeghi	1997	103
8	Visible blind GaN p-i-n photodiodes Applied Physics Letters ·D. Walker, A. Saxler, Patrick Kung, X. Zhang, M. Hamilton, J. Diaz, Manijeh Razeghi	1998	94
9	Growth of AlxGa1−xN:Ge on sapphire and silicon substrates Applied Physics Letters ·X. Zhang, Patrick Kung, A. Saxler, D. Walker, T. C. Wang, Manijeh Razeghi	1995	78
10	Lateral epitaxial overgrowth of GaN films on sapphire and silicon substrates Applied Physics Letters ·Patrick Kung, D. Walker, M. Hamilton, J. Diaz, M. Razeghi	1999	73
11	Photovoltaic effects in GaN structures with p-n junctions Applied Physics Letters ·X. Zhang, Patrick Kung, D. Walker, J. Piotrowski, Antoni Rogalski, A. Saxler, M. Razeghi	1995	67
12	Kinetics of photoconductivity in n-type GaN photodetector Applied Physics Letters ·Patrick Kung, Xiuwen Zhang, D. Walker, A. Saxler, J. Piotrowski, Antoni Rogalski, M. Razeghi	1995	65
13	Pulse autocorrelation measurements based on two- and three-photon conductivity in a GaN photodiode Applied Physics Letters ·Alexander M. Streltsov, K. D. Moll, Alexander L. Gaeta, Patrick Kung, D. Walker, Manijeh Razeghi	1999	57
14	Metalorganic chemical vapor deposition of monocrystalline GaN thin films on β-LiGaO2 substrates Applied Physics Letters ·Patrick Kung, A. Saxler, X. Zhang, D. Walker, R. Lavado, Manijeh Razeghi	1996	53
15	GaInN/GaN Multi-Quantum Well Laser Diodes Grown by Low-Pressure Metalorganic Chemical Vapor Deposition MRS Internet Journal of Nitride Semiconductor Research ·Patrick Kung, A. Saxler, D. Walker, A. Rybaltowski, Xiaolong Zhang, J. Diaz, Manijeh Razeghi	1998	40
16	Optimization of current spreading metal layer for GaN/InGaN-based light emitting diodes Solid-State Electronics ·X. A. Cao, E. B. Stokes, Peter Sandvik, N. R. Taskar, J. Kretchmer, D. Walker	2002	35
17	Comparison of trimethylgallium and triethylgallium for the growth of GaN Applied Physics Letters ·A. Saxler, D. Walker, Patrick Kung, X. Zhang, Manijeh Razeghi, J. S. Solomon, W. C. Mitchel, H. R. Vydyanath	1997	35
18	Investigation of radiative tunneling in GaN/InGaN single quantum well light-emitting diodes Solid-State Electronics ·X. A. Cao, S. F. LeBoeuf, K.H Kim, Peter M. Sandvik, E. B. Stokes, Abasifreke Ebong, D. Walker, J. Kretchmer, J. Y. Lin, H. X. Jiang	2002	32
19	Influence of defects on electrical and optical characteristics of GaN/InGaN-based light-emitting diodes Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE ·X. A. Cao, Katarzyna Topol, F. Shahedipour‐Sandvik, Julie Teetsov, Peter M. Sandvik, Stephen E. LeBoeuf, Abasifreke Ebong, James W. Kretchmer, E. B. Stokes, S. Arthur, Alain E. Kaloyeros, D. Walker	2002	26
20	Growth of GaN without Yellow Luminescence MRS Proceedings ·X. Zhang, Patrick Kung, D. Walker, A. Saxler, Manijeh Razeghi	1995	20

About D. Walker

D. Walker is a scholar working on Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Electrical and Electronic Engineering, Biomedical Engineering and Atomic and Molecular Physics, and Optics, having authored 58 papers that have together received 1.9k indexed citations. Recurring topics across this work include GaN-based semiconductor devices and materials (42 papers), Ga2O3 and related materials (24 papers), Semiconductor materials and devices (12 papers), Semiconductor Quantum Structures and Devices (10 papers), Photocathodes and Microchannel Plates (10 papers), ZnO doping and properties (8 papers), Metal and Thin Film Mechanics (6 papers) and Nanowire Synthesis and Applications (3 papers). The work is most often cited by research in Condensed Matter Physics (1.6k citations), Electronic, Optical and Magnetic Materials (1.0k citations), Atomic and Molecular Physics, and Optics (538 citations), Materials Chemistry (622 citations) and Biomedical Engineering (592 citations). D. Walker has collaborated with scholars based in United States, Canada and Australia. Frequent co-authors include Patrick Kung, Manijeh Razeghi, A. Saxler, M. Hamilton, J. Diaz, E. B. Stokes, X. A. Cao, J. Kretchmer, M. Razeghi and Peter M. Sandvik. Their work appears in journals such as Applied Physics Letters, Trauma Violence & Abuse, Solid-State Electronics, IEEE Electron Device Letters and MRS Internet Journal of Nitride Semiconductor Research.

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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