Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Michael Graetzel](https://cdn.adscientificindex.com/pictures/a6/1260514.jpg)
Solar energy conversion
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1,549
1,006
0.649
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Nazeeruddin](https://cdn.adscientificindex.com/pictures/9c/1515947.jpg)
solar energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
856
657
0.768
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Licheng Sun](https://cdn.adscientificindex.com/pictures/1e/1102753.jpg)
Solar Cells & Solar Fuels
Artificial Photosynthesis
Water Splitting
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
727
517
0.711
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Roberto Castello](https://cdn.adscientificindex.com/pictures/fa/1212321.jpg)
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
719
577
0.803
* Total i10 IndexRankings
Ranking Based On Selection: 5
![James Robert Durrant](/user/assets/images/profile/no-profile-photo.png)
solar energy
photochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
518
398
0.768
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Christophe Ballif](https://cdn.adscientificindex.com/pictures/82/1234503.jpg)
solar cells and modules
building integrated photovoltaics
storage
smart grid
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
460
279
0.607
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Francisco Jurado Melguizo|Francisco Jurado Melguizo, FJ Melguizo](https://cdn.adscientificindex.com/pictures/53/4335881.jpg)
Renewable energy
power systems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
451
350
0.776
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Dimos Poulikakos](https://cdn.adscientificindex.com/pictures/ab/1086862.jpg)
Energy
Nanotechnology
Thermodynamics
Interfacial Phenomena and Surface Science
Biofluidics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
432
274
0.634
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Jinyue Yan](https://cdn.adscientificindex.com/pictures/9b/1086834.jpg)
energy systems
CCS
renewable energy
power generation
climate change mitigation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
424
351
0.828
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Mike Lockwood](https://cdn.adscientificindex.com/pictures/41/1210470.jpg)
Solar change
space weather
climate
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
341
158
0.463
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Detlef Stolten](https://cdn.adscientificindex.com/pictures/af/4475200.jpg)
Energy
hydrogen
fuel cells
electrolysis
systems analysis
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
337
271
0.804
* Total i10 IndexRankings
Ranking Based On Selection: 12
![François Maréchal](https://cdn.adscientificindex.com/pictures/b1/908163.jpg)
energy efficiency
process integration
energy system
renewable energy
computer aided decision support
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
335
241
0.719
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Peter D Lund](https://cdn.adscientificindex.com/pictures/d2/926082.jpg)
Advanced Energy Systems
Renewable Energy
Energy Transition
Multidisciplinarity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
334
238
0.713
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Jens Bo Holm Nielsen](https://cdn.adscientificindex.com/pictures/ea/1607358.jpg)
Center for Bioenergy and Green Engineering incl. Renewable Energy Systems
Smart Energy Systems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
317
182
0.574
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Ernst Worrell](https://cdn.adscientificindex.com/pictures/59/1801162.jpg)
Energy
resources
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
308
209
0.679
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Petr Novák](https://cdn.adscientificindex.com/pictures/28/1079704.jpg)
Batteries
Energy Storage
Electrochemistry
Battery Characterization
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
283
206
0.728
* Total i10 IndexRankings
Ranking Based On Selection: 17
![Pavel A. Strizhak](https://cdn.adscientificindex.com/pictures/66/1479238.jpg)
физико-химические процессы при зажигании жидких топлив
тепломассопе
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
279
183
0.656
* Total i10 IndexRankings
Ranking Based On Selection: 18
![David G Lidzey](https://cdn.adscientificindex.com/pictures/0c/1267486.jpg)
photovoltaics
microcavities
polaritons
organic semiconductors
perovskites
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
266
158
0.594
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Tapas Mallick](https://cdn.adscientificindex.com/pictures/f8/906754.jpg)
Photovoltaics
Solar Energy Conversion
Renewable Energy
Fluids
Heat Transfer
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
263
228
0.867
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Martin K Patel](/user/assets/images/profile/no-profile-photo.png)
Energy efficiency
emission reduction
bio-based materials
energy analysis
LCA (Life Cycle Assessment)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
253
204
0.806
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Christian Breyer](https://cdn.adscientificindex.com/pictures/30/1656406.jpg)
renewable energy
energy transition
solar energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
249
213
0.855
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Soteris Kalogirou](https://cdn.adscientificindex.com/pictures/f1/1489397.jpg)
Solar Energy
Renewable Energy Systems
Solar Cooling
Desalination
Neural Networks
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
248
197
0.794
* Total i10 IndexRankings
Ranking Based On Selection: 23
![Andre Bardow](https://cdn.adscientificindex.com/pictures/05/1109465.jpg)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
243
218
0.897
* Total i10 IndexRankings
Ranking Based On Selection: 24
![Mark A Green](/user/assets/images/profile/no-profile-photo.png)
Photovoltaics
Magnetism
Neutron and Synchrotron Scattering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
236
118
0.500
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Liang Wang](/user/assets/images/profile/no-profile-photo.png)
Bioenergy
Biochar
Waste to Energy
Carbon
Renewable Energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
227
194
0.855
Michael Graetzel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
1,549
1,006
0.649
Nazeeruddin
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
856
657
0.768
Licheng Sun
Royal Institute of Technology
Stockholm, Sweden
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
727
517
0.711
Solar Cells & Solar Fuels
Artificial Photosynthesis
Water Splitting
Roberto Castello
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
719
577
0.803
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physics
James Robert Durrant
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
518
398
0.768
solar energy
photochemistry
Christophe Ballif
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
460
279
0.607
solar cells and modules
building integrated photovoltaics
storage
smart grid
Francisco Jurado Melguizo|Francisco Jurado Melguizo, FJ Melguizo
Universidad de Jaén
Jaén, Spain
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
451
350
0.776
Renewable energy
power systems
Dimos Poulikakos
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
432
274
0.634
Energy
Nanotechnology
Thermodynamics
Interfacial Phenomena and Surface Science
Biofluidics
Jinyue Yan
Royal Institute of Technology
Stockholm, Sweden
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
424
351
0.828
energy systems
CCS
renewable energy
power generation
climate change mitigation
Mike Lockwood
University of Reading
Reading, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
341
158
0.463
Solar change
space weather
climate
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Detlef Stolten
Forschungszentrum Jülich
Jülich, Germany
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
337
271
0.804
Energy
hydrogen
fuel cells
electrolysis
systems analysis
François Maréchal
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
335
241
0.719
energy efficiency
process integration
energy system
renewable energy
computer aided decision support
Peter D Lund
Aalto University
Espoo, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
334
238
0.713
Advanced Energy Systems
Renewable Energy
Energy Transition
Multidisciplinarity
Jens Bo Holm Nielsen
Aalborg University
Aalborg, Denmark
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
317
182
0.574
Center for Bioenergy and Green Engineering incl. Renewable Energy Systems
Smart Energy Systems
Ernst Worrell
Utrecht University
Utrecht, Netherlands
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
308
209
0.679
Petr Novák
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
283
206
0.728
Batteries
Energy Storage
Electrochemistry
Battery Characterization
Pavel A. Strizhak
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
279
183
0.656
физико-химические процессы при зажигании жидких топлив
тепломассопе
David G Lidzey
University of Sheffield
Sheffield, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
266
158
0.594
photovoltaics
microcavities
polaritons
organic semiconductors
perovskites
Tapas Mallick
University of Exeter
Exeter, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
263
228
0.867
Photovoltaics
Solar Energy Conversion
Renewable Energy
Fluids
Heat Transfer
Martin K Patel
Université de Geneve
Geneva, Switzerland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
253
204
0.806
Energy efficiency
emission reduction
bio-based materials
energy analysis
LCA (Life Cycle Assessment)
Christian Breyer
Lappeenranta University of Technology
Lappeenranta, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
249
213
0.855
renewable energy
energy transition
solar energy
Soteris Kalogirou
Cyprus University of Technology
Limassol, Cyprus
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
248
197
0.794
Solar Energy
Renewable Energy Systems
Solar Cooling
Desalination
Neural Networks
Andre Bardow
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
243
218
0.897
Mark A Green
University of Kent
Canterbury, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
236
118
0.500
Photovoltaics
Magnetism
Neutron and Synchrotron Scattering
Liang Wang
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
227
194
0.855
Bioenergy
Biochar
Waste to Energy
Carbon
Renewable Energy