University, Subject, Country, Region, World
Helmholtz-Zentrum Berlin für Materialien und Energie 206 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 (873.690) 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
solar energy
photovoltaics
solar cells
thin-film technology
Metrics
H-Index
i10 Index
Citation Counts
79
278
29,624
* Total H IndexRankings
Ranking Based On Selection: 3
Physics
Materials Science
Tomography
Neutrons
X-rays
Metrics
H-Index
i10 Index
Citation Counts
75
316
18,610
* Total H IndexRankings
Ranking Based On Selection: 4
Metrics
H-Index
i10 Index
Citation Counts
72
331
18,216
* Total H IndexRankings
Ranking Based On Selection: 5
Thin Film Photovoltaics
Materials Science
Defect Spectroscopy
Metrics
H-Index
i10 Index
Citation Counts
70
198
18,522
* Total H IndexRankings
Ranking Based On Selection: 6
photovoltaics
Metrics
H-Index
i10 Index
Citation Counts
68
121
18,790
* Total H IndexRankings
Ranking Based On Selection: 7
microscopy and applications in biomedical research
Metrics
H-Index
i10 Index
Citation Counts
68
137
16,674
* Total H IndexRankings
Ranking Based On Selection: 8
solar fuels
photoelectrochemistry
thin films
nanostructured materials
metal oxides
Metrics
H-Index
i10 Index
Citation Counts
65
149
19,660
* Total H IndexRankings
Ranking Based On Selection: 9
hybrid materials
functional colloid particles
Metrics
H-Index
i10 Index
Citation Counts
59
158
16,167
* Total H IndexRankings
Ranking Based On Selection: 10
Photovoltaics
Perovskite and Silicon Solar Cells
Heterojunctions
Photoelectron Spectroscopy
Metrics
H-Index
i10 Index
Citation Counts
58
139
16,247
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* Total H IndexRankings
Ranking Based On Selection: 11
neutron imaging
tomography
materials research
Metrics
H-Index
i10 Index
Citation Counts
58
202
11,182
* Total H IndexRankings
Ranking Based On Selection: 12
solar energy materials
Metrics
H-Index
i10 Index
Citation Counts
58
193
10,812
* Total H IndexRankings
Ranking Based On Selection: 13
Metrics
H-Index
i10 Index
Citation Counts
54
216
11,158
* Total H IndexRankings
Ranking Based On Selection: 14
Metrics
H-Index
i10 Index
Citation Counts
54
202
12,213
* Total H IndexRankings
Ranking Based On Selection: 15
solid state physics
Metrics
H-Index
i10 Index
Citation Counts
52
135
10,169
* Total H IndexRankings
Ranking Based On Selection: 16
Physics
Magnetism
Coherent X-ray scattering
X-ray Spectroscopy
Ultrafast Dynamics
Metrics
H-Index
i10 Index
Citation Counts
50
120
10,177
* Total H IndexRankings
Ranking Based On Selection: 17
Thin Film Solar Cells
Metrics
H-Index
i10 Index
Citation Counts
49
125
8,756
* Total H IndexRankings
Ranking Based On Selection: 18
Electron Spin Resonance
Quantum Optics
Single Defects in Diamond
Metrics
H-Index
i10 Index
Citation Counts
48
79
10,853
* Total H IndexRankings
Ranking Based On Selection: 19
XMCD
Pump and Probe
X-Ray Microscopy
STXM
Metrics
H-Index
i10 Index
Citation Counts
48
151
11,368
* Total H IndexRankings
Ranking Based On Selection: 20
Photoelectrochemistry
Materials Science
Metrics
H-Index
i10 Index
Citation Counts
46
90
9,675
* Total H IndexRankings
Ranking Based On Selection: 21
crystallography
structural disorder
compound semiconductor
diffraction
Metrics
H-Index
i10 Index
Citation Counts
46
141
8,609
* Total H IndexRankings
Ranking Based On Selection: 22
electron microscopy
thin-film solar cells
structure-property relationships
correlative microscopy
Metrics
H-Index
i10 Index
Citation Counts
46
132
8,370
* Total H IndexRankings
Ranking Based On Selection: 23
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: 24
Surface and Interface Characterization
Solar Cells
Energy Conversion Devices
Metrics
H-Index
i10 Index
Citation Counts
45
144
7,329
* Total H IndexRankings
Ranking Based On Selection: 25
Thin Film Photovoltaics
CIGS
Monolithic Thin Film Tandem Solar Cells
Metrics
H-Index
i10 Index
Citation Counts
44
117
6,700
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
Bernd Rech
Metrics
H-Index
i10-Index
Citation Counts
79
278
29,624
Ingo Manke
Metrics
H-Index
i10-Index
Citation Counts
75
316
18,610
Physics
Materials Science
Tomography
Neutrons
X-rays
Martha Lux-Steiner
Metrics
H-Index
i10-Index
Citation Counts
72
331
18,216
Thomas Unold
Metrics
H-Index
i10-Index
Citation Counts
70
198
18,522
Thin Film Photovoltaics
Materials Science
Defect Spectroscopy
Steve Albrecht
Metrics
H-Index
i10-Index
Citation Counts
68
121
18,790
James G. Mcnally
Metrics
H-Index
i10-Index
Citation Counts
68
137
16,674
Roel Van De Krol
Metrics
H-Index
i10-Index
Citation Counts
65
149
19,660
solar fuels
photoelectrochemistry
thin films
nanostructured materials
metal oxides
Yan Lu
Metrics
H-Index
i10-Index
Citation Counts
59
158
16,167
hybrid materials
functional colloid particles
Lars Korte
Metrics
H-Index
i10-Index
Citation Counts
58
139
16,247
Photovoltaics
Perovskite and Silicon Solar Cells
Heterojunctions
Photoelectron Spectroscopy
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Nikolay Kardjilov
Metrics
H-Index
i10-Index
Citation Counts
58
202
11,182
neutron imaging
tomography
materials research
Jie Xiao
Metrics
H-Index
i10-Index
Citation Counts
54
216
11,158
Wolfram Von Oertzen
Metrics
H-Index
i10-Index
Citation Counts
54
202
12,213
Oliver Rader
Metrics
H-Index
i10-Index
Citation Counts
52
135
10,169
Jan Luning
Metrics
H-Index
i10-Index
Citation Counts
50
120
10,177
Physics
Magnetism
Coherent X-ray scattering
X-ray Spectroscopy
Ultrafast Dynamics
Reiner Klenk
Metrics
H-Index
i10-Index
Citation Counts
49
125
8,756
Boris Naydenov
Metrics
H-Index
i10-Index
Citation Counts
48
79
10,853
Electron Spin Resonance
Quantum Optics
Single Defects in Diamond
Markus Weigand
Metrics
H-Index
i10-Index
Citation Counts
48
151
11,368
Fatwa F. Abdi
Metrics
H-Index
i10-Index
Citation Counts
46
90
9,675
Photoelectrochemistry
Materials Science
Susan Schorr
Metrics
H-Index
i10-Index
Citation Counts
46
141
8,609
crystallography
structural disorder
compound semiconductor
diffraction
Daniel Abou-Ras
Metrics
H-Index
i10-Index
Citation Counts
46
132
8,370
electron microscopy
thin-film solar cells
structure-property relationships
correlative microscopy
Rutger Schlatmann
Metrics
H-Index
i10-Index
Citation Counts
45
137
10,701
Solar cells
renewable energy
thin film technology
Marcus Bär
Metrics
H-Index
i10-Index
Citation Counts
45
144
7,329
Surface and Interface Characterization
Solar Cells
Energy Conversion Devices
Christian A. Kaufmann
Metrics
H-Index
i10-Index
Citation Counts
44
117
6,700
Thin Film Photovoltaics
CIGS
Monolithic Thin Film Tandem Solar Cells