World Scientist and University Rankings 2025
Germany Engineering & Technology / Energy Engineering 90 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 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 6 years. As of Jan 31, 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 (870.053) 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 IndexRankings
Ranking Based On Selection: 1
Hybrid solar cells
Perovskite solar cells
Perovskites
Tin perovskite
Solar energy conversion
Metrics
H-Index
i10 Index
Citation Counts
91
192
58,346
* Total H IndexRankings
Ranking Based On Selection: 2
Energy
hydrogen
fuel cells
electrolysis
systems analysis
Metrics
H-Index
i10 Index
Citation Counts
87
337
32,746
* Total H IndexRankings
Ranking Based On Selection: 3
Energy Engineering
Metrics
H-Index
i10 Index
Citation Counts
72
213
27,335
* Total H IndexRankings
Ranking Based On Selection: 4
Energy/Refrigeration Engineering
Optimization
Exergy-based Methods
Hydrogen economy
Power-to-X
Metrics
H-Index
i10 Index
Citation Counts
62
132
9,413
* Total H IndexRankings
Ranking Based On Selection: 5
Energiewirtschaft
Energy Systems Analysis
Energy and the Environment
Energy Market Design
Renewable Energy
Metrics
H-Index
i10 Index
Citation Counts
55
193
11,226
* Total H IndexRankings
Ranking Based On Selection: 6
environmental modelling
forest sciences
remote sensing
laser
renewable energy mapping and modelling
Metrics
H-Index
i10 Index
Citation Counts
47
105
9,211
* Total H IndexRankings
Ranking Based On Selection: 7
Solar cells
renewable energy
thin film technology
Metrics
H-Index
i10 Index
Citation Counts
45
137
10,701
* Total H IndexRankings
Ranking Based On Selection: 8
Electrochemical (Energy) Technologies
Metrics
H-Index
i10 Index
Citation Counts
45
132
7,223
* Total H IndexRankings
Ranking Based On Selection: 9
Metrics
H-Index
i10 Index
Citation Counts
42
134
8,763
* Total H IndexRankings
Ranking Based On Selection: 10
Organic π conjugated materials
Electrocatalysis
Photoelectrochemistry
Covalent organic frameworks
Metrics
H-Index
i10 Index
Citation Counts
39
69
6,270
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* Total H IndexRankings
Ranking Based On Selection: 11
Catalysis
Photochemistry
Electrochemistry
Energy Conversion
PV Cells
Metrics
H-Index
i10 Index
Citation Counts
37
51
4,535
* Total H IndexRankings
Ranking Based On Selection: 12
solar cells
lock-in thermography
Si nano structures
physics education
Metrics
H-Index
i10 Index
Citation Counts
32
65
3,772
* Total H IndexRankings
Ranking Based On Selection: 13
Solar cells
Halide perovskites
Light emitting diodes
Interfaces
Metrics
H-Index
i10 Index
Citation Counts
31
57
5,566
* Total H IndexRankings
Ranking Based On Selection: 14
alternative fuel vehicles
electric vehicles
market diffusion models
Metrics
H-Index
i10 Index
Citation Counts
30
57
3,821
* Total H IndexRankings
Ranking Based On Selection: 15
Energy Engineering
Process Simulation
Metrics
H-Index
i10 Index
Citation Counts
26
39
2,442
* Total H IndexRankings
Ranking Based On Selection: 16
energy
sustainability
complex system modeling
interdisciplinary research
Metrics
H-Index
i10 Index
Citation Counts
25
36
1,661
* Total H IndexRankings
Ranking Based On Selection: 17
Renewable energy
rural electrification
eLCA
Metrics
H-Index
i10 Index
Citation Counts
24
36
3,409
* Total H IndexRankings
Ranking Based On Selection: 18
Photovoltaic
Thin Film Heterostructures
Energy Transition
Metrics
H-Index
i10 Index
Citation Counts
24
41
2,543
* Total H IndexRankings
Ranking Based On Selection: 19
power systems
smart grid
machine learning
optimization
resilience
Metrics
H-Index
i10 Index
Citation Counts
23
35
3,798
* Total H IndexRankings
Ranking Based On Selection: 20
Renewable Energy
Bioeconomy
Sustainable Management
Consumer Research
Business Models
Metrics
H-Index
i10 Index
Citation Counts
22
36
2,119
* Total H IndexRankings
Ranking Based On Selection: 21
Offshore Engineering
Computational Fluid Dynamics
Ship hydrodynamics
Maritime Renewable Energy
Metrics
H-Index
i10 Index
Citation Counts
22
66
2,081
* Total H IndexRankings
Ranking Based On Selection: 22
Energy Economics
Energy Policy
Energy Market Design
Industrial Organization
Metrics
H-Index
i10 Index
Citation Counts
22
35
1,623
* Total H IndexRankings
Ranking Based On Selection: 23
Thermoelectrics
Renewable Energy
Defect Chemistry
Ferroelectrics
Piezoelectrics
Metrics
H-Index
i10 Index
Citation Counts
20
32
1,385
* Total H IndexRankings
Ranking Based On Selection: 24
renewable energy
simulation
smart grid
Metrics
H-Index
i10 Index
Citation Counts
20
32
1,586
* Total H IndexRankings
Ranking Based On Selection: 25
Batteries
Renewable Energy
AFM characterization
Ferroelectric Materials
Metrics
H-Index
i10 Index
Citation Counts
19
22
2,007
Antonio Abate
Metrics
H-Index
i10-Index
Citation Counts
91
192
58,346
Hybrid solar cells
Perovskite solar cells
Perovskites
Tin perovskite
Solar energy conversion
Detlef Stolten
Metrics
H-Index
i10-Index
Citation Counts
87
337
32,746
Energy
hydrogen
fuel cells
electrolysis
systems analysis
George Tsatsaronis
Technische Universität Berlin
Berlin, Germany
Metrics
H-Index
i10-Index
Citation Counts
72
213
27,335
Tatiana Morosuk
Technische Universität Berlin
Berlin, Germany
Metrics
H-Index
i10-Index
Citation Counts
62
132
9,413
Energy/Refrigeration Engineering
Optimization
Exergy-based Methods
Hydrogen economy
Power-to-X
Wolf Fichtner
Karlsruhe Institute of Technology
Karlsruhe, Germany
Metrics
H-Index
i10-Index
Citation Counts
55
193
11,226
Energiewirtschaft
Energy Systems Analysis
Energy and the Environment
Energy Market Design
Renewable Energy
Koch Barbara
Universität Freiburg
Freiburg, Germany
Metrics
H-Index
i10-Index
Citation Counts
47
105
9,211
environmental modelling
forest sciences
remote sensing
laser
renewable energy mapping and modelling
Rutger Schlatmann
Metrics
H-Index
i10-Index
Citation Counts
45
137
10,701
Solar cells
renewable energy
thin film technology
Ulrike Krewer
Technische Universität Braunschweig
Braunschweig, Germany
Metrics
H-Index
i10-Index
Citation Counts
45
132
7,223
Electrochemical (Energy) Technologies
Christoph Weber
Metrics
H-Index
i10-Index
Citation Counts
42
134
8,763
Liang Yao
Metrics
H-Index
i10-Index
Citation Counts
39
69
6,270
Organic π conjugated materials
Electrocatalysis
Photoelectrochemistry
Covalent organic frameworks
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Julien Warnan
Metrics
H-Index
i10-Index
Citation Counts
37
51
4,535
Catalysis
Photochemistry
Electrochemistry
Energy Conversion
PV Cells
Jan Bauer
Universität Leipzig
Leipzig, Germany
Metrics
H-Index
i10-Index
Citation Counts
32
65
3,772
solar cells
lock-in thermography
Si nano structures
physics education
Azhar Fakharuddin
Universität Konstanz
Konstanz, Germany
Metrics
H-Index
i10-Index
Citation Counts
31
57
5,566
Solar cells
Halide perovskites
Light emitting diodes
Interfaces
Till Gnann
Metrics
H-Index
i10-Index
Citation Counts
30
57
3,821
alternative fuel vehicles
electric vehicles
market diffusion models
Matthias Finkenrath
Hochschule Kempten
Kempten, Germany
Metrics
H-Index
i10-Index
Citation Counts
26
39
2,442
Energy Engineering
Process Simulation
Svetlana Ikonnikova
Metrics
H-Index
i10-Index
Citation Counts
25
36
1,661
energy
sustainability
complex system modeling
interdisciplinary research
Ramchandra Bhandari
Metrics
H-Index
i10-Index
Citation Counts
24
36
3,409
Renewable energy
rural electrification
eLCA
Paul Pistor
Metrics
H-Index
i10-Index
Citation Counts
24
41
2,543
Photovoltaic
Thin Film Heterostructures
Energy Transition
Florian Steinke
Technische Universität Darmstadt
Darmstadt, Germany
Metrics
H-Index
i10-Index
Citation Counts
23
35
3,798
power systems
smart grid
machine learning
optimization
resilience
Carsten Herbes
Metrics
H-Index
i10-Index
Citation Counts
22
36
2,119
Renewable Energy
Bioeconomy
Sustainable Management
Consumer Research
Business Models
Moustafa Abdel Maksoud
Metrics
H-Index
i10-Index
Citation Counts
22
66
2,081
Offshore Engineering
Computational Fluid Dynamics
Ship hydrodynamics
Maritime Renewable Energy
Felix Müsgens
Metrics
H-Index
i10-Index
Citation Counts
22
35
1,623
Energy Economics
Energy Policy
Energy Market Design
Industrial Organization
Jamil Ur Rahman
Metrics
H-Index
i10-Index
Citation Counts
20
32
1,385
Thermoelectrics
Renewable Energy
Defect Chemistry
Ferroelectrics
Piezoelectrics
Christof Wittwer
Metrics
H-Index
i10-Index
Citation Counts
20
32
1,586
renewable energy
simulation
smart grid
Batteries
Renewable Energy
AFM characterization
Ferroelectric Materials