Citation Rankings
Highly Cited Researchers
Europe Engineering & Technology Highly Cited Researchers 1.326 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Solar energy conversion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
502,880
138,895
0.276
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
208,476
59,722
0.286
* Total Citation Counts Rankings
Ranking Based On Selection: 3
solar energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
190,419
62,819
0.330
* Total Citation Counts Rankings
Ranking Based On Selection: 4
solar energy
photochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
87,330
29,645
0.339
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Solar Cells & Solar Fuels
Artificial Photosynthesis
Water Splitting
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,798
32,017
0.412
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Hybrid solar cells
Perovskite solar cells
Perovskites
Tin perovskite
Solar energy conversion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,346
34,105
0.585
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Solar Energy
Renewable Energy Systems
Solar Cooling
Desalination
Neural Networks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,840
21,492
0.449
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Batteries
Energy Storage
Electrochemistry
Battery Characterization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,121
15,786
0.350
* Total Citation Counts Rankings
Ranking Based On Selection: 9
solar cells and modules
building integrated photovoltaics
storage
smart grid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,144
19,628
0.455
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Energy
Nanotechnology
Thermodynamics
Interfacial Phenomena and Surface Science
Biofluidics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,314
15,012
0.355
* Total Citation Counts Rankings
Ranking Based On Selection: 11
100% Renewable Energy Systems
Smart Energy Systems Design and Modelling
Energy Planning and Policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,225
19,974
0.497
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Solar change
space weather
climate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,770
16,044
0.414
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Energy Storage
Electrochemistry
Electrolytes
Electrocatalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,507
26,724
0.753
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Energy
resources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,468
16,422
0.476
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Energy
hydrogen
fuel cells
electrolysis
systems analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,746
22,345
0.682
* Total Citation Counts Rankings
Ranking Based On Selection: 16
energy systems
CCS
renewable energy
power generation
climate change mitigation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,381
19,418
0.600
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Metabolism
Aging
Diabetes
Obesity
Mitochondria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,560
8,724
0.295
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Center for Bioenergy and Green Engineering incl. Renewable Energy Systems
Smart Energy Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,197
11,644
0.399
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Energy Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,335
10,957
0.401
* Total Citation Counts Rankings
Ranking Based On Selection: 20
renewable energy
energy transition
solar energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,580
21,144
0.795
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Energy efficiency
emission reduction
bio-based materials
energy analysis
LCA (Life Cycle Assessment)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,124
13,609
0.521
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Solar Cells
Organic Semiconductors
Photovoltaics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,745
6,006
0.233
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Solar Cells
NMR
Organinc Synthesis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,403
5,849
0.230
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Advanced Energy Systems
Renewable Energy
Energy Transition
Multidisciplinarity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,147
13,457
0.535
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,533
17,218
0.764
* Total Citation Counts Rankings
Rankings
28
1
1
Ranking Based On Selection: 1
Michael Graetzel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
502,880
138,895
0.276
* Total Citation Counts Rankings
Rankings
762
14
2
Ranking Based On Selection: 2
Roberto Castello
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
208,476
59,722
0.286
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physics
* Total Citation Counts Rankings
Rankings
934
17
4
Ranking Based On Selection: 3
Nazeeruddin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
190,419
62,819
0.330
* Total Citation Counts Rankings
Rankings
4,130
334
31
Ranking Based On Selection: 4
James Robert Durrant
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
87,330
29,645
0.339
solar energy
photochemistry
* Total Citation Counts Rankings
Rankings
5,053
52
3
Ranking Based On Selection: 5
Licheng Sun
Royal Institute of Technology
Stockholm, Sweden
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,798
32,017
0.412
Solar Cells & Solar Fuels
Artificial Photosynthesis
Water Splitting
* Total Citation Counts Rankings
Rankings
8,015
324
1
Ranking Based On Selection: 6
Antonio Abate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,346
34,105
0.585
Hybrid solar cells
Perovskite solar cells
Perovskites
Tin perovskite
Solar energy conversion
* Total Citation Counts Rankings
Rankings
11,017
6
1
Ranking Based On Selection: 7
Soteris Kalogirou
Cyprus University of Technology
Limassol, Cyprus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,840
21,492
0.449
Solar Energy
Renewable Energy Systems
Solar Cooling
Desalination
Neural Networks
* Total Citation Counts Rankings
Rankings
12,086
219
51
Ranking Based On Selection: 8
Petr Novák
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,121
15,786
0.350
Batteries
Energy Storage
Electrochemistry
Battery Characterization
* Total Citation Counts Rankings
Rankings
13,012
232
32
Ranking Based On Selection: 9
Christophe Ballif
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,144
19,628
0.455
solar cells and modules
building integrated photovoltaics
storage
smart grid
* Total Citation Counts Rankings
Rankings
13,435
246
56
Ranking Based On Selection: 10
Dimos Poulikakos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,314
15,012
0.355
Energy
Nanotechnology
Thermodynamics
Interfacial Phenomena and Surface Science
Biofluidics
* Total Citation Counts Rankings
Rankings
14,577
119
10
Ranking Based On Selection: 11
Henrik Lund
Aalborg University
Aalborg, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,225
19,974
0.497
100% Renewable Energy Systems
Smart Energy Systems Design and Modelling
Energy Planning and Policy
* Total Citation Counts Rankings
Rankings
15,447
1,342
9
Ranking Based On Selection: 12
Mike Lockwood
University of Reading
Reading, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,770
16,044
0.414
Solar change
space weather
climate
* Total Citation Counts Rankings
Rankings
17,756
319
74
Ranking Based On Selection: 13
Maria Lukatskaya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,507
26,724
0.753
Energy Storage
Electrochemistry
Electrolytes
Electrocatalysis
* Total Citation Counts Rankings
Rankings
18,551
453
53
Ranking Based On Selection: 14
Ernst Worrell
Utrecht University
Utrecht, Netherlands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,468
16,422
0.476
* Total Citation Counts Rankings
Rankings
20,104
897
7
Ranking Based On Selection: 15
Detlef Stolten
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,746
22,345
0.682
Energy
hydrogen
fuel cells
electrolysis
systems analysis
* Total Citation Counts Rankings
Rankings
20,458
256
10
Ranking Based On Selection: 16
Jinyue Yan
Royal Institute of Technology
Stockholm, Sweden
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,381
19,418
0.600
energy systems
CCS
renewable energy
power generation
climate change mitigation
* Total Citation Counts Rankings
Rankings
23,640
441
107
Ranking Based On Selection: 17
Michael Ristow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,560
8,724
0.295
Metabolism
Aging
Diabetes
Obesity
Mitochondria
* Total Citation Counts Rankings
Rankings
24,057
194
16
Ranking Based On Selection: 18
Jens Bo Holm Nielsen
Aalborg University
Aalborg, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,197
11,644
0.399
Center for Bioenergy and Green Engineering incl. Renewable Energy Systems
Smart Energy Systems
* Total Citation Counts Rankings
Rankings
26,503
1,160
17
Ranking Based On Selection: 19
George Tsatsaronis
Technische Universität Berlin
Berlin, Germany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,335
10,957
0.401
* Total Citation Counts Rankings
Rankings
27,692
128
3
Ranking Based On Selection: 20
Christian Breyer
Lappeenranta University of Technology
Lappeenranta, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,580
21,144
0.795
renewable energy
energy transition
solar energy
* Total Citation Counts Rankings
Rankings
28,412
535
53
Ranking Based On Selection: 21
Martin K Patel
Université de Geneve
Geneva, Switzerland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,124
13,609
0.521
Energy efficiency
emission reduction
bio-based materials
energy analysis
LCA (Life Cycle Assessment)
* Total Citation Counts Rankings
Rankings
29,011
149
6
Ranking Based On Selection: 22
Markus Scharber|Markus C. Scharber
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,745
6,006
0.233
Solar Cells
Organic Semiconductors
Photovoltaics
* Total Citation Counts Rankings
Rankings
29,597
254
40
Ranking Based On Selection: 23
Mikkel Jørgensen
Technical University of Denmark
Kongens Lyngby, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,403
5,849
0.230
Solar Cells
NMR
Organinc Synthesis
* Total Citation Counts Rankings
Rankings
30,080
137
16
Ranking Based On Selection: 24
Peter D Lund
Aalto University
Espoo, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,147
13,457
0.535
Advanced Energy Systems
Renewable Energy
Energy Transition
Multidisciplinarity
* Total Citation Counts Rankings
Rankings
35,143
648
155
Ranking Based On Selection: 25
Andre Bardow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,533
17,218
0.764