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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
2,142
World Rank
24
Country Rank
2
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
2,294
World Rank
77
Country Rank
2
University
Ranking Based On Selection:
2
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
3,491
World Rank
3
Country Rank
2
University
Ranking Based On Selection:
3
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:
4
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
5,423
World Rank
222
Country Rank
2
University
Ranking Based On Selection:
5
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:
6
* Total H Index Rankings
Rankings
5,865
World Rank
43
Country Rank
15
University
Ranking Based On Selection:
7
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
6,664
World Rank
77
Country Rank
22
University
Ranking Based On Selection:
8
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:
9
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:
10
* Total H Index Rankings
Rankings
8,762
World Rank
409
Country Rank
16
University
Ranking Based On Selection:
11
Engineering & Technology / Energy Engineering
Energy materials | Energy storage and conversion | MOFs | Phase change materials | Nanoporous material
Energy materials | Energy storage and conversion | MOFs | Phase change materials | Nanoporous material
H-Index Metrics
-
H-Index105
-
i10 Index276
-
Citation Counts43,560
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* Total H Index Rankings
Rankings
10,144
World Rank
35
Country Rank
20
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
photovoltaics | solar cells | materials science | semiconductors | interface
photovoltaics | solar cells | materials science | semiconductors | interface
H-Index Metrics
-
H-Index101
-
i10 Index279
-
Citation Counts40,760
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* Total H Index Rankings
Rankings
10,170
World Rank
476
Country Rank
10
University
Ranking Based On Selection:
13
Engineering & Technology / Energy Engineering
Heat transfer | Energy conservation | Electronics cooling | Porous media | Nano-scale heat transfe
Heat transfer | Energy conservation | Electronics cooling | Porous media | Nano-scale heat transfe
H-Index Metrics
-
H-Index101
-
i10 Index948
-
Citation Counts58,832
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* Total H Index Rankings
Rankings
10,968
World Rank
519
Country Rank
12
University
Ranking Based On Selection:
14
Engineering & Technology / Energy Engineering
Thermal Sciences | Heat Transfer | Phase-Change Heat Transfer | Thermal Storage | Thermal Managemen
Thermal Sciences | Heat Transfer | Phase-Change Heat Transfer | Thermal Storage | Thermal Managemen
H-Index Metrics
-
H-Index99
-
i10 Index284
-
Citation Counts45,371
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* Total H Index Rankings
Rankings
10,970
World Rank
520
Country Rank
13
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Energy Storage Materials | Lithium/Sodium Ion Batteries | Supercapacitor
Energy Storage Materials | Lithium/Sodium Ion Batteries | Supercapacitor
H-Index Metrics
-
H-Index99
-
i10 Index233
-
Citation Counts30,204
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* Total H Index Rankings
Rankings
12,282
World Rank
579
Country Rank
19
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
12,693
World Rank
605
Country Rank
11
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Energy chemistry | Lithium-sulfur battery | Lithium metal batter
Energy chemistry | Lithium-sulfur battery | Lithium metal batter
H-Index Metrics
-
H-Index95
-
i10 Index169
-
Citation Counts28,935
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* Total H Index Rankings
Rankings
13,702
World Rank
112
Country Rank
40
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Microgrids | Power System Stability | Smart Grid | Data-Analytic
Microgrids | Power System Stability | Smart Grid | Data-Analytic
H-Index Metrics
-
H-Index93
-
i10 Index332
-
Citation Counts26,944
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* Total H Index Rankings
Rankings
13,708
World Rank
656
Country Rank
6
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
14,242
World Rank
685
Country Rank
10
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
14,316
World Rank
4
Country Rank
1
University
Ranking Based On Selection:
21
Engineering & Technology / Energy Engineering
Computational Engineering | Biomorphic Intelligence | Bioinspired Material Design | 3D Printin
Computational Engineering | Biomorphic Intelligence | Bioinspired Material Design | 3D Printin
H-Index Metrics
-
H-Index92
-
i10 Index280
-
Citation Counts26,010
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* Total H Index Rankings
Rankings
14,370
World Rank
132
Country Rank
8
University
Ranking Based On Selection:
22
Engineering & Technology / Energy Engineering
energy materials | nanomaterials | spray pyrolysis | battery material
energy materials | nanomaterials | spray pyrolysis | battery material
H-Index Metrics
-
H-Index92
-
i10 Index575
-
Citation Counts33,163
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* Total H Index Rankings
Rankings
14,829
World Rank
723
Country Rank
6
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Energy Storage Materials | Carbon | Supercapacitor | Batter
Energy Storage Materials | Carbon | Supercapacitor | Batter
H-Index Metrics
-
H-Index91
-
i10 Index264
-
Citation Counts29,703
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* Total H Index Rankings
Rankings
14,851
World Rank
731
Country Rank
16
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
14,935
World Rank
748
Country Rank
8
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
Solar Energy | Catalysis | Photovoltaic | Functional Material
Solar Energy | Catalysis | Photovoltaic | Functional Material
H-Index Metrics
-
H-Index91
-
i10 Index254
-
Citation Counts37,048
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