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The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 5 years. As of Jan 03, 2026, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (1.131.752) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H Index Rankings
Rankings
15
World Rank
1
Country Rank
1
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
351
World Rank
5
Country Rank
2
University
Ranking Based On Selection:
2
Engineering & Technology / Energy Engineering
Statistics | Machine Learning | Renewable Energy | Building Physics | Particle Physic
Statistics | Machine Learning | Renewable Energy | Building Physics | Particle Physic
H-Index Metrics
-
H-Index231
-
i10 Index702
-
Citation Counts216,910
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* Total H Index Rankings
Rankings
799
World Rank
17
Country Rank
6
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
1,463
World Rank
111
Country Rank
12
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
2,712
World Rank
31
Country Rank
3
University
Ranking Based On Selection:
5
Engineering & Technology / Energy Engineering
Solar Cells & Solar Fuels | Artificial Photosynthesis | Water Splitting | AEM-WE | CO2 Reductio
Solar Cells & Solar Fuels | Artificial Photosynthesis | Water Splitting | AEM-WE | CO2 Reductio
H-Index Metrics
-
H-Index142
-
i10 Index794
-
Citation Counts84,959
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* Total H Index Rankings
Rankings
6,943
World Rank
127
Country Rank
31
University
Ranking Based On Selection:
6
Engineering & Technology / Energy Engineering
Energy | Nanotechnology | Thermodynamics | Interfacial Phenomena and Surface Science | Biofluidic
Energy | Nanotechnology | Thermodynamics | Interfacial Phenomena and Surface Science | Biofluidic
H-Index Metrics
-
H-Index112
-
i10 Index443
-
Citation Counts45,325
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* Total H Index Rankings
Rankings
7,185
World Rank
131
Country Rank
20
University
Ranking Based On Selection:
7
Engineering & Technology / Energy Engineering
solar cells and modules | building integrated photovoltaics | storage | smart gri
solar cells and modules | building integrated photovoltaics | storage | smart gri
H-Index Metrics
-
H-Index111
-
i10 Index479
-
Citation Counts47,301
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* Total H Index Rankings
Rankings
9,505
World Rank
4
Country Rank
1
University
Ranking Based On Selection:
8
Engineering & Technology / Energy Engineering
Solar Energy | Renewable Energy Systems | Solar Cooling | Desalination | Neural Network
Solar Energy | Renewable Energy Systems | Solar Cooling | Desalination | Neural Network
H-Index Metrics
-
H-Index103
-
i10 Index265
-
Citation Counts52,515
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* Total H Index Rankings
Rankings
10,949
World Rank
533
Country Rank
1
University
Ranking Based On Selection:
9
Engineering & Technology / Energy Engineering
Hybrid solar cells | Perovskite solar cells | Perovskites | Tin perovskite | Solar energy conversio
Hybrid solar cells | Perovskite solar cells | Perovskites | Tin perovskite | Solar energy conversio
H-Index Metrics
-
H-Index99
-
i10 Index215
-
Citation Counts65,387
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* Total H Index Rankings
Rankings
11,482
World Rank
340
Country Rank
39
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
11,592
World Rank
211
Country Rank
56
University
Ranking Based On Selection:
11
Engineering & Technology / Energy Engineering
Batteries | Energy Storage | Electrochemistry | Battery Characterizatio
Batteries | Energy Storage | Electrochemistry | Battery Characterizatio
H-Index Metrics
-
H-Index98
-
i10 Index286
-
Citation Counts47,737
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* Total H Index Rankings
Rankings
11,840
World Rank
151
Country Rank
8
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
energy systems | CCS | renewable energy | power generation | climate change mitigatio
energy systems | CCS | renewable energy | power generation | climate change mitigatio
H-Index Metrics
-
H-Index97
-
i10 Index469
-
Citation Counts38,323
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* Total H Index Rankings
Rankings
12,250
World Rank
52
Country Rank
3
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
13,236
World Rank
657
Country Rank
6
University
Ranking Based On Selection:
14
Engineering & Technology / Energy Engineering
Energy systems | systems analysis | hydrogen | fuel cells | electrolysi
Energy systems | systems analysis | hydrogen | fuel cells | electrolysi
H-Index Metrics
-
H-Index94
-
i10 Index364
-
Citation Counts38,644
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* Total H Index Rankings
Rankings
14,358
World Rank
113
Country Rank
10
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
100% Renewable Energy Systems | Smart Energy Systems Design and Modelling | Energy Planning and Polic
100% Renewable Energy Systems | Smart Energy Systems Design and Modelling | Energy Planning and Polic
H-Index Metrics
-
H-Index92
-
i10 Index224
-
Citation Counts44,545
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* Total H Index Rankings
Rankings
16,171
World Rank
307
Country Rank
31
University
Ranking Based On Selection:
16
Engineering & Technology / Energy Engineering
Energy efficiency | emission reduction | bio-based materials | energy analysis | LCA (Life Cycle Assessment
Energy efficiency | emission reduction | bio-based materials | energy analysis | LCA (Life Cycle Assessment
H-Index Metrics
-
H-Index89
-
i10 Index267
-
Citation Counts29,143
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* Total H Index Rankings
Rankings
16,259
World Rank
130
Country Rank
11
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Center for Bioenergy and Green Engineering incl. Renewable Energy Systems | Smart Energy System
Center for Bioenergy and Green Engineering incl. Renewable Energy Systems | Smart Energy System
H-Index Metrics
-
H-Index89
-
i10 Index352
-
Citation Counts42,211
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* Total H Index Rankings
Rankings
18,963
World Rank
95
Country Rank
8
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Advanced Energy Systems | Renewable Energy | Energy Transition | Multidisciplinarit
Advanced Energy Systems | Renewable Energy | Energy Transition | Multidisciplinarit
H-Index Metrics
-
H-Index85
-
i10 Index360
-
Citation Counts28,603
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* Total H Index Rankings
Rankings
19,952
World Rank
391
Country Rank
56
University
Ranking Based On Selection:
19
Engineering & Technology / Energy Engineering
energy efficiency | process integration | energy system | renewable energy | computer aided decision suppor
energy efficiency | process integration | energy system | renewable energy | computer aided decision suppor
H-Index Metrics
-
H-Index84
-
i10 Index361
-
Citation Counts22,981
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* Total H Index Rankings
Rankings
22,347
World Rank
99
Country Rank
1
University
Ranking Based On Selection:
20
Engineering & Technology / Energy Engineering
Thermodynamics | Refrigeration | ORC | Solar Collector | Energy in Building
Thermodynamics | Refrigeration | ORC | Solar Collector | Energy in Building
H-Index Metrics
-
H-Index81
-
i10 Index202
-
Citation Counts17,702
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* Total H Index Rankings
Rankings
25,037
World Rank
2,232
Country Rank
11
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
25,278
World Rank
548
Country Rank
3
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
26,377
World Rank
2,359
Country Rank
47
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Photovoltaics | Solar Energy Conversion | Renewable Energy | Fluids | Heat Transfe
Photovoltaics | Solar Energy Conversion | Renewable Energy | Fluids | Heat Transfe
H-Index Metrics
-
H-Index77
-
i10 Index280
-
Citation Counts19,342
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* Total H Index Rankings
Rankings
26,405
World Rank
2,367
Country Rank
28
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
26,699
World Rank
2,394
Country Rank
52
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
photovoltaics | microcavities | polaritons | organic semiconductors | perovskite
photovoltaics | microcavities | polaritons | organic semiconductors | perovskite
H-Index Metrics
-
H-Index77
-
i10 Index283
-
Citation Counts22,698
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Premium Data
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