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World Scientist and University Rankings 2026
World Engineering & Technology 5.984 Scientists Subject Rankings (Sort by last 5 years H Index)
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 Dec 30, 2025, 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 (1.131.699) 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].
* Last 5 Years H-Index Rankings
Rankings
49
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
1
Last 5 Years H-Index Metrics
-
H-Index181
-
i10 Index1,052
-
Citation Counts160,262
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* Last 5 Years H-Index Rankings
Rankings
692
World Rank
32
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
Last 5 Years H-Index Metrics
-
H-Index136
-
i10 Index377
-
Citation Counts58,596
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* Last 5 Years H-Index Rankings
Rankings
835
World Rank
254
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Energy Engineering
batteries | fuel cells | materials chemistry | synthesis | nanomaterial
batteries | fuel cells | materials chemistry | synthesis | nanomaterial
Last 5 Years H-Index Metrics
-
H-Index128
-
i10 Index767
-
Citation Counts79,119
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* Last 5 Years H-Index Rankings
Rankings
1,210
World Rank
20
Country Rank
4
University
Ranking Based On Selection:
4
Last 5 Years H-Index Metrics
-
H-Index116
-
i10 Index664
-
Citation Counts63,938
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* Last 5 Years H-Index Rankings
Rankings
1,258
World Rank
420
Country Rank
11
University
Ranking Based On Selection:
5
Engineering & Technology / Energy Engineering
solar cells | memory | semiconductor | organic electronics | organic photovoltaic
solar cells | memory | semiconductor | organic electronics | organic photovoltaic
Last 5 Years H-Index Metrics
-
H-Index115
-
i10 Index390
-
Citation Counts58,767
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* Last 5 Years H-Index Rankings
Rankings
1,346
World Rank
22
Country Rank
6
University
Ranking Based On Selection:
6
Engineering & Technology / Energy Engineering
Statistics | Machine Learning | Renewable Energy | Building Physics | Particle Physic
Statistics | Machine Learning | Renewable Energy | Building Physics | Particle Physic
Last 5 Years H-Index Metrics
-
H-Index113
-
i10 Index597
-
Citation Counts68,379
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* Last 5 Years H-Index Rankings
Rankings
1,462
World Rank
3
Country Rank
2
University
Ranking Based On Selection:
7
Engineering & Technology / Energy Engineering
Renewable Energy | Energy Storage Systems | CAD and Design | Smart Material
Renewable Energy | Energy Storage Systems | CAD and Design | Smart Material
Last 5 Years H-Index Metrics
-
H-Index113
-
i10 Index485
-
Citation Counts50,231
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* Last 5 Years H-Index Rankings
Rankings
1,676
World Rank
62
Country Rank
4
University
Ranking Based On Selection:
8
Engineering & Technology / Energy Engineering
Photovoltaics | Semiconductors | Solar Cells | Conversion Efficienc
Photovoltaics | Semiconductors | Solar Cells | Conversion Efficienc
Last 5 Years H-Index Metrics
-
H-Index107
-
i10 Index424
-
Citation Counts50,505
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* Last 5 Years H-Index Rankings
Rankings
1,935
World Rank
24
Country Rank
2
University
Ranking Based On Selection:
9
Last 5 Years H-Index Metrics
-
H-Index103
-
i10 Index346
-
Citation Counts39,838
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* Last 5 Years H-Index Rankings
Rankings
1,946
World Rank
8
Country Rank
1
University
Ranking Based On Selection:
10
Engineering & Technology / Energy Engineering
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Ai
• Renewable Energy Systems. • Desiccant Dehumidification Systems. • Refrigeration and Ai
Last 5 Years H-Index Metrics
-
H-Index103
-
i10 Index378
-
Citation Counts29,827
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* Last 5 Years H-Index Rankings
Rankings
2,231
World Rank
762
Country Rank
5
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
Last 5 Years H-Index Metrics
-
H-Index99
-
i10 Index365
-
Citation Counts42,433
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* Last 5 Years H-Index Rankings
Rankings
2,507
World Rank
853
Country Rank
1
University
Ranking Based On Selection:
12
Last 5 Years H-Index Metrics
-
H-Index96
-
i10 Index236
-
Citation Counts39,987
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* Last 5 Years H-Index Rankings
Rankings
2,520
World Rank
203
Country Rank
18
University
Ranking Based On Selection:
13
Last 5 Years H-Index Metrics
-
H-Index96
-
i10 Index426
-
Citation Counts35,398
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* Last 5 Years H-Index Rankings
Rankings
2,610
World Rank
83
Country Rank
15
University
Ranking Based On Selection:
14
Engineering & Technology / Energy Engineering
energy | fluids | CO2 conversion | CO2 capture | electrochemical system
energy | fluids | CO2 conversion | CO2 capture | electrochemical system
Last 5 Years H-Index Metrics
-
H-Index95
-
i10 Index264
-
Citation Counts39,817
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* Last 5 Years H-Index Rankings
Rankings
2,867
World Rank
214
Country Rank
4
University
Ranking Based On Selection:
15
Last 5 Years H-Index Metrics
-
H-Index93
-
i10 Index753
-
Citation Counts40,768
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* Last 5 Years H-Index Rankings
Rankings
2,912
World Rank
221
Country Rank
7
University
Ranking Based On Selection:
16
Engineering & Technology / Energy Engineering
Energy chemistry | Lithium-sulfur battery | Lithium metal batter
Energy chemistry | Lithium-sulfur battery | Lithium metal batter
Last 5 Years H-Index Metrics
-
H-Index93
-
i10 Index169
-
Citation Counts26,759
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* Last 5 Years H-Index Rankings
Rankings
3,057
World Rank
14
Country Rank
3
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
Renewable Energy | Power Electronics | Drives | Electrical Engineerin
Last 5 Years H-Index Metrics
-
H-Index92
-
i10 Index368
-
Citation Counts29,926
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* Last 5 Years H-Index Rankings
Rankings
3,135
World Rank
126
Country Rank
1
University
Ranking Based On Selection:
18
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
Last 5 Years H-Index Metrics
-
H-Index91
-
i10 Index208
-
Citation Counts40,990
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* Last 5 Years H-Index Rankings
Rankings
3,262
World Rank
254
Country Rank
3
University
Ranking Based On Selection:
19
Engineering & Technology / Energy Engineering
solar energy conversion materials (potocatalysis | photoelectrochemical | solar cells
solar energy conversion materials (potocatalysis | photoelectrochemical | solar cells
Last 5 Years H-Index Metrics
-
H-Index90
-
i10 Index627
-
Citation Counts42,481
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* Last 5 Years H-Index Rankings
Rankings
3,336
World Rank
17
Country Rank
3
University
Ranking Based On Selection:
20
Last 5 Years H-Index Metrics
-
H-Index90
-
i10 Index246
-
Citation Counts28,168
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* Last 5 Years H-Index Rankings
Rankings
3,413
World Rank
36
Country Rank
3
University
Ranking Based On Selection:
21
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
Last 5 Years H-Index Metrics
-
H-Index89
-
i10 Index582
-
Citation Counts38,921
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* Last 5 Years H-Index Rankings
Rankings
3,611
World Rank
296
Country Rank
10
University
Ranking Based On Selection:
22
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
Last 5 Years H-Index Metrics
-
H-Index88
-
i10 Index235
-
Citation Counts32,089
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* Last 5 Years H-Index Rankings
Rankings
3,773
World Rank
46
Country Rank
20
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
energy storage materials | graphene 2D materials | photonics | hybrid perovskite
energy storage materials | graphene 2D materials | photonics | hybrid perovskite
Last 5 Years H-Index Metrics
-
H-Index87
-
i10 Index328
-
Citation Counts30,572
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* Last 5 Years H-Index Rankings
Rankings
3,782
World Rank
22
Country Rank
11
University
Ranking Based On Selection:
24
Engineering & Technology / Energy Engineering
photovoltaics | solar cells | materials science | semiconductors | interface
photovoltaics | solar cells | materials science | semiconductors | interface
Last 5 Years H-Index Metrics
-
H-Index87
-
i10 Index245
-
Citation Counts28,965
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* Last 5 Years H-Index Rankings
Rankings
3,813
World Rank
47
Country Rank
21
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
Microgrids | Power System Stability | Smart Grid | Data-Analytic
Microgrids | Power System Stability | Smart Grid | Data-Analytic
Last 5 Years H-Index Metrics
-
H-Index87
-
i10 Index318
-
Citation Counts23,447
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