Citation Rankings
Highly Cited Researchers
World Highly Cited Researchers Citation Engineering & Technology / Energy Engineering Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Solar energy conversion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
497,563
167,493
0.337
* Total Citation Counts Rankings
Ranking Based On Selection :2
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
205,177
77,468
0.378
* Total Citation Counts Rankings
Ranking Based On Selection :3
solar energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
186,599
73,259
0.393
* Total Citation Counts Rankings
Ranking Based On Selection :4
solar cells
memory
semiconductor
organic electronics
organic photovoltaics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
157,120
59,148
0.376
* Total Citation Counts Rankings
Ranking Based On Selection :5
hollow structures
batteries
electrocatalysis
supercapacitors
photocatalysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
143,730
81,173
0.565
* Total Citation Counts Rankings
Ranking Based On Selection :6
Photovoltaics
Semiconductors
Solar Cells
Conversion Efficiency
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
126,967
49,018
0.386
* Total Citation Counts Rankings
Ranking Based On Selection :7
batteries
fuel cells
materials chemistry
synthesis
nanomaterials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
124,253
73,377
0.591
* Total Citation Counts Rankings
Ranking Based On Selection :8
solar energy
photochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,149
34,014
0.395
* Total Citation Counts Rankings
Ranking Based On Selection :9
Solar Cells & Solar Fuels
Artificial Photosynthesis
Water Splitting
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,609
36,463
0.476
* Total Citation Counts Rankings
Ranking Based On Selection :10
batteries
nanomaterials
catalysts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,298
38,921
0.524
* Total Citation Counts Rankings
Ranking Based On Selection :11
Electron Microscopy
Tomography
Renewable Energy
Complex Oxides
Ptychography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,928
38,034
0.514
* Total Citation Counts Rankings
Ranking Based On Selection :12
energy storage materials
graphene 2D materials
photonics
hybrid perovskites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,016
30,984
0.484
* Total Citation Counts Rankings
Ranking Based On Selection :13
Energy storage
Li-S batteries
Lithium metal anode
Carbon nanomaterials
Fluidized bed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,615
49,813
0.796
* Total Citation Counts Rankings
Ranking Based On Selection :14
Energy Studies
Solar Thermal
Photovoltaics
Renewable Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,778
38,146
0.660
* Total Citation Counts Rankings
Ranking Based On Selection :15
Hybrid solar cells
Perovskite solar cells
Perovskites
Tin perovskite
Solar energy conversion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,842
39,199
0.690
* Total Citation Counts Rankings
Ranking Based On Selection :16
Engine Combustion
bio-fuel
ragne extender
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,538
31,888
0.596
* Total Citation Counts Rankings
Ranking Based On Selection :17
Solar Energy Conversion and Storage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,921
36,202
0.711
* Total Citation Counts Rankings
Ranking Based On Selection :18
solar energy conversion materials (potocatalysis
photoelectrochemical
solar cells)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,646
27,708
0.547
* Total Citation Counts Rankings
Ranking Based On Selection :19
Electrochemical Engineering
Fuel cells
Hydrogen
Electrocatalysis
Polymer Electrolytes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,061
25,268
0.526
* Total Citation Counts Rankings
Ranking Based On Selection :20
Solar Energy
Renewable Energy Systems
Solar Cooling
Desalination
Neural Networks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,812
24,171
0.516
* Total Citation Counts Rankings
Ranking Based On Selection :21
perovskite solar cells
perovskite LEDs
organic solar cells
organic electronics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,254
28,894
0.638
* Total Citation Counts Rankings
Ranking Based On Selection :22
Renewable Energy
Energy Storage Systems
CAD and Design
Smart Materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,024
36,140
0.803
* Total Citation Counts Rankings
Ranking Based On Selection :23
Batteries
Energy Storage
Electrochemistry
Battery Characterization
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,428
18,223
0.410
* Total Citation Counts Rankings
Ranking Based On Selection :24
Renewable Energy
Power Electronics
Drives
Electrical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,769
27,991
0.640
* Total Citation Counts Rankings
Ranking Based On Selection :25
solar cells and modules
building integrated photovoltaics
storage
smart grid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,314
22,229
0.525
* Total Citation Counts Rankings
Rankings
28
1
1
Ranking Based On Selection: 1
Michael Graetzel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
497,563
167,493
0.337
* Total Citation Counts Rankings
Rankings
755
14
2
Ranking Based On Selection: 2
Roberto Castello
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
205,177
77,468
0.378
Statistics
Machine Learning
Renewable Energy
Building Physics
Particle Physics
* Total Citation Counts Rankings
Rankings
941
17
4
Ranking Based On Selection: 3
Nazeeruddin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
186,599
73,259
0.393
* Total Citation Counts Rankings
Rankings
1,302
575
9
Ranking Based On Selection: 4
Yang Yang (楊陽）
University of California Los Angeles
Los Angeles, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
157,120
59,148
0.376
solar cells
memory
semiconductor
organic electronics
organic photovoltaics
* Total Citation Counts Rankings
Rankings
1,549
7
2
Ranking Based On Selection: 5
Xiong Wen David Lou
Nanyang Technological University
Jurong West, Singapore
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
143,730
81,173
0.565
hollow structures
batteries
electrocatalysis
supercapacitors
photocatalysis
* Total Citation Counts Rankings
Rankings
1,962
59
8
Ranking Based On Selection: 6
Martin A Green
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
126,967
49,018
0.386
Photovoltaics
Semiconductors
Solar Cells
Conversion Efficiency
* Total Citation Counts Rankings
Rankings
2,034
939
8
Ranking Based On Selection: 7
Arumugam Manthiram
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
124,253
73,377
0.591
batteries
fuel cells
materials chemistry
synthesis
nanomaterials
* Total Citation Counts Rankings
Rankings
4,100
334
31
Ranking Based On Selection: 8
James Robert Durrant
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,149
34,014
0.395
solar energy
photochemistry
* Total Citation Counts Rankings
Rankings
5,037
52
3
Ranking Based On Selection: 9
Licheng Sun
Royal Institute of Technology
Stockholm, Sweden
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,609
36,463
0.476
Solar Cells & Solar Fuels
Artificial Photosynthesis
Water Splitting
* Total Citation Counts Rankings
Rankings
5,300
57
3
Ranking Based On Selection: 10
Jaephil Cho
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,298
38,921
0.524
batteries
nanomaterials
catalysts
* Total Citation Counts Rankings
Rankings
5,345
2,532
22
Ranking Based On Selection: 11
David A Muller
Cornell University
Ithaca, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,928
38,034
0.514
Electron Microscopy
Tomography
Renewable Energy
Complex Oxides
Ptychography
* Total Citation Counts Rankings
Rankings
6,722
30
10
Ranking Based On Selection: 12
Shen Ze Xiang
Nanyang Technological University
Jurong West, Singapore
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,016
30,984
0.484
energy storage materials
graphene 2D materials
photonics
hybrid perovskites
* Total Citation Counts Rankings
Rankings
6,971
189
2
Ranking Based On Selection: 13
Jia-Qi Huang 黄佳琦
Beijing Institute of Technology
Beijing, China
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,615
49,813
0.796
Energy storage
Li-S batteries
Lithium metal anode
Carbon nanomaterials
Fluidized bed
* Total Citation Counts Rankings
Rankings
7,910
8
1
Ranking Based On Selection: 14
Kamaruzzaman Sopian
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,778
38,146
0.660
Energy Studies
Solar Thermal
Photovoltaics
Renewable Energy
* Total Citation Counts Rankings
Rankings
8,132
328
1
Ranking Based On Selection: 15
Antonio Abate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,842
39,199
0.690
Hybrid solar cells
Perovskite solar cells
Perovskites
Tin perovskite
Solar energy conversion
* Total Citation Counts Rankings
Rankings
8,987
252
2
Ranking Based On Selection: 16
Liguang Liu
Tongji University
Shanghai, China
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,538
31,888
0.596
Engine Combustion
bio-fuel
ragne extender
* Total Citation Counts Rankings
Rankings
9,730
4,640
2
Ranking Based On Selection: 17
Kai Zhu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,921
36,202
0.711
Solar Energy Conversion and Storage
* Total Citation Counts Rankings
Rankings
9,817
287
4
Ranking Based On Selection: 18
Gang Liu (刘岗)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,646
27,708
0.547
solar energy conversion materials (potocatalysis
photoelectrochemical
solar cells)
* Total Citation Counts Rankings
Rankings
10,640
5,063
8
Ranking Based On Selection: 19
Yushan Yan
University of Delaware
Newark, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,061
25,268
0.526
Electrochemical Engineering
Fuel cells
Hydrogen
Electrocatalysis
Polymer Electrolytes
* Total Citation Counts Rankings
Rankings
11,069
6
1
Ranking Based On Selection: 20
Soteris Kalogirou
Cyprus University of Technology
Limassol, Cyprus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,812
24,171
0.516
Solar Energy
Renewable Energy Systems
Solar Cooling
Desalination
Neural Networks
* Total Citation Counts Rankings
Rankings
11,694
94
18
Ranking Based On Selection: 21
Hin-Lap Yip 葉軒立）
City University of Hong Kong
Coimbatore, Hong Kong
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,254
28,894
0.638
perovskite solar cells
perovskite LEDs
organic solar cells
organic electronics
* Total Citation Counts Rankings
Rankings
11,783
8
4
Ranking Based On Selection: 22
Abdul-Ghani Olabi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,024
36,140
0.803
Renewable Energy
Energy Storage Systems
CAD and Design
Smart Materials
* Total Citation Counts Rankings
Rankings
12,054
219
51
Ranking Based On Selection: 23
Petr Novák
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,428
18,223
0.410
Batteries
Energy Storage
Electrochemistry
Battery Characterization
* Total Citation Counts Rankings
Rankings
12,341
16
2
Ranking Based On Selection: 24
Nasrudin Abd Rahim
University of Malaya
Kuala Lumpur, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,769
27,991
0.640
Renewable Energy
Power Electronics
Drives
Electrical Engineering
* Total Citation Counts Rankings
Rankings
13,048
234
32
Ranking Based On Selection: 25
Christophe Ballif
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,314
22,229
0.525
solar cells and modules
building integrated photovoltaics
storage
smart grid