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World 5.986 Scientists Subject Rankings
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 02, 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
810
World Rank
294
Country Rank
4
University
Ranking Based On Selection:
4
Engineering & Technology / Energy Engineering
solar cells | memory | semiconductor | organic electronics | organic photovoltaic
solar cells | memory | semiconductor | organic electronics | organic photovoltaic
H-Index Metrics
-
H-Index195
-
i10 Index515
-
Citation Counts167,229
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* Total H Index Rankings
Rankings
1,019
World Rank
384
Country Rank
4
University
Ranking Based On Selection:
5
Engineering & Technology / Energy Engineering
batteries | fuel cells | materials chemistry | synthesis | nanomaterial
batteries | fuel cells | materials chemistry | synthesis | nanomaterial
H-Index Metrics
-
H-Index182
-
i10 Index993
-
Citation Counts140,390
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* Total H Index Rankings
Rankings
1,463
World Rank
111
Country Rank
12
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
1,526
World Rank
43
Country Rank
5
University
Ranking Based On Selection:
7
Engineering & Technology / Energy Engineering
Photovoltaics | Semiconductors | Solar Cells | Conversion Efficienc
Photovoltaics | Semiconductors | Solar Cells | Conversion Efficienc
H-Index Metrics
-
H-Index163
-
i10 Index810
-
Citation Counts137,952
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* Total H Index Rankings
Rankings
2,142
World Rank
24
Country Rank
2
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
2,294
World Rank
77
Country Rank
2
University
Ranking Based On Selection:
9
Engineering & Technology / Energy Engineering
Energy storage | Li-S batteries | Lithium metal anode | Carbon nanomaterials | Fluidized be
Energy storage | Li-S batteries | Lithium metal anode | Carbon nanomaterials | Fluidized be
H-Index Metrics
-
H-Index147
-
i10 Index401
-
Citation Counts76,758
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* Total H Index Rankings
Rankings
2,712
World Rank
31
Country Rank
3
University
Ranking Based On Selection:
10
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
3,213
World Rank
1,403
Country Rank
10
University
Ranking Based On Selection:
11
Engineering & Technology / Energy Engineering
Electron Microscopy | Tomography | Renewable Energy | Complex Oxides | Ptychograph
Electron Microscopy | Tomography | Renewable Energy | Complex Oxides | Ptychograph
H-Index Metrics
-
H-Index136
-
i10 Index445
-
Citation Counts84,096
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* Total H Index Rankings
Rankings
3,491
World Rank
3
Country Rank
2
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
Renewable Energy | Energy Storage Systems | CAD and Design | Smart Material
Renewable Energy | Energy Storage Systems | CAD and Design | Smart Material
H-Index Metrics
-
H-Index133
-
i10 Index514
-
Citation Counts61,368
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* Total H Index Rankings
Rankings
3,853
World Rank
27
Country Rank
11
University
Ranking Based On Selection:
13
Engineering & Technology / Energy Engineering
energy storage materials | graphene 2D materials | photonics | hybrid perovskite
energy storage materials | graphene 2D materials | photonics | hybrid perovskite
H-Index Metrics
-
H-Index130
-
i10 Index455
-
Citation Counts69,594
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* Total H Index Rankings
Rankings
4,780
World Rank
2,132
Country Rank
1
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
4,826
World Rank
2,153
Country Rank
3
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Electrochemical Engineering | Polymer Electrolytes | Fuel cells | Hydrogen | Electrocatalysi
Electrochemical Engineering | Polymer Electrolytes | Fuel cells | Hydrogen | Electrocatalysi
H-Index Metrics
-
H-Index123
-
i10 Index341
-
Citation Counts53,850
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* Total H Index Rankings
Rankings
5,423
World Rank
222
Country Rank
2
University
Ranking Based On Selection:
16
Engineering & Technology / Energy Engineering
solar energy conversion materials (potocatalysis | photoelectrochemical | solar cells
solar energy conversion materials (potocatalysis | photoelectrochemical | solar cells
H-Index Metrics
-
H-Index119
-
i10 Index756
-
Citation Counts76,529
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* Total H Index Rankings
Rankings
5,810
World Rank
240
Country Rank
2
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
5,865
World Rank
43
Country Rank
15
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Energy storage | Batteries | E-waste/Batteries recycling | Sustainability | Circular econom
Energy storage | Batteries | E-waste/Batteries recycling | Sustainability | Circular econom
H-Index Metrics
-
H-Index117
-
i10 Index408
-
Citation Counts45,487
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* Total H Index Rankings
Rankings
6,215
World Rank
228
Country Rank
40
University
Ranking Based On Selection:
19
Engineering & Technology / Energy Engineering
energy | fluids | CO2 conversion | CO2 capture | electrochemical system
energy | fluids | CO2 conversion | CO2 capture | electrochemical system
H-Index Metrics
-
H-Index115
-
i10 Index312
-
Citation Counts51,889
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* Total H Index Rankings
Rankings
6,664
World Rank
77
Country Rank
22
University
Ranking Based On Selection:
20
Engineering & Technology / Energy Engineering
perovskite solar cells | perovskite LEDs | organic solar cells | organic electronic
perovskite solar cells | perovskite LEDs | organic solar cells | organic electronic
H-Index Metrics
-
H-Index113
-
i10 Index303
-
Citation Counts51,330
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* Total H Index Rankings
Rankings
6,860
World Rank
10
Country Rank
2
University
Ranking Based On Selection:
21
Engineering & Technology / Energy Engineering
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
H-Index Metrics
-
H-Index112
-
i10 Index496
-
Citation Counts49,614
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* Total H Index Rankings
Rankings
6,878
World Rank
297
Country Rank
2
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
6,943
World Rank
127
Country Rank
31
University
Ranking Based On Selection:
23
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:
24
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
7,598
World Rank
10
Country Rank
1
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Ai
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Ai
H-Index Metrics
-
H-Index109
-
i10 Index385
-
Citation Counts35,053
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Premium Data
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