2026 Thomas Unold: Materials Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Materials Science	73	3828	3704	211	204	335	20375

Overview

Thomas Unold is affiliated with the Helmholtz-Zentrum Berlin für Materialien und Energie in Germany. Their research primarily focuses on engineering and materials science, with notable contributions in electrical and electronic engineering as well as materials chemistry.

Their work spans several specialized subfields, including:

Electrical and Electronic Engineering
Materials Chemistry
Polymers and Plastics
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials

Key topics in Thomas Unold's research include:

Chalcogenide Semiconductor Thin Films
Quantum Dots Synthesis And Properties
Perovskite Materials and Applications
Copper-based nanomaterials and applications
Conducting polymers and applications
Advanced Semiconductor Detectors and Materials
Electronic and Structural Properties of Oxides

Thomas Unold has contributed to publications in several frequent venues, such as:

arXiv (Cornell University)
Advanced Energy Materials
Journal of Materials Chemistry A
ACS Applied Materials & Interfaces
Zenodo (CERN European Organization for Nuclear Research)

Their research output includes papers published between 2020 and 2022, with some of the recent papers being:

"Monolithic perovskite/silicon tandem solar cell with >29% efficiency by enhanced hole extraction" (2020, Science)
"Photoluminescence-Based Characterization of Halide Perovskites for Photovoltaics" (2020, Advanced Energy Materials)
"Charge transfer rates and electron trapping at buried interfaces of perovskite solar cells" (2021, Joule)
"An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles" (2021, Nature Energy)
"Understanding Performance Limiting Interfacial Recombination in pin Perovskite Solar Cells" (2022, Advanced Energy Materials)

Frequent collaborators in their research include:

Hannes Hempel
J.A. Marquez
Marin Rusu
Antonio Abate
Eva Unger

Best Publications

Monolithic perovskite/silicon tandem solar cell with >29% efficiency by enhanced hole extraction

Amran Al-Ashouri;Eike Köhnen;Bor Li;Artiom Magomedov

1824
Citations
Conformal monolayer contacts with lossless interfaces for perovskite single junction and monolithic tandem solar cells

Amran Al-Ashouri;Artiom Magomedov;Marcel Roß;Marko Jošt

1029
Citations
Visualization and suppression of interfacial recombination for high-efficiency large-area pin perovskite solar cells

Martin Stolterfoht;Christian Michael Wolff;Jose A. Marquez;Shanshan Zhang;Shanshan Zhang

973
Citations
The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells

Martin Stolterfoht;Pietro Caprioglio;Pietro Caprioglio;Christian M. Wolff;José A. Márquez

859
Citations
Photoluminescence-Based Characterization of Halide Perovskites for Photovoltaics

Thomas Kirchartz;Thomas Kirchartz;José A. Márquez;Martin Stolterfoht;Thomas Unold

496
Citations
On the relation between the open‐circuit voltage and quasi‐Fermi level splitting in efficient perovskite solar cells

Pietro Caprioglio;Pietro Caprioglio;Martin Stolterfoht;Christian M. Wolff;Thomas Unold

479
Citations
Cu2ZnSnS4 thin film solar cells by fast coevaporation

Björn-Arvid Schubert;Björn Marsen;Sonja Cinque;Thomas Unold

385
Citations
Interpretation of admittance, capacitance-voltage, and current-voltage signatures in Cu(In,Ga)Se2 thin film solar cells

Tobias Eisenbarth;Thomas Unold;Raquel Caballero;Christian A. Kaufmann

376
Citations
Charge transfer rates and electron trapping at buried interfaces of perovskite solar cells

Igal Levine;Amran Al-Ashouri;Artem Musiienko;Hannes Hempel

374
Citations
The perovskite/transport layer interfaces dominate non-radiative recombination in efficient perovskite solar cells

Martin Stolterfoht;Pietro Caprioglio;Christian M. Wolff;José A. Márquez

373
Citations
Open-Circuit Voltages Exceeding 1.26 V in Planar Methylammonium Lead Iodide Perovskite Solar Cells

Zhifa Liu;Zhifa Liu;Lisa Krückemeier;Benedikt Krogmeier;Benjamin Klingebiel

369
Citations
Understanding Performance Limiting Interfacial Recombination in pin Perovskite Solar Cells

Unknown

319
Citations
An open-access database and analysis tool for perovskite solar cells based on the FAIR data principles

Unknown

306
Citations
Beyond Bulk Lifetimes: Insights into Lead Halide Perovskite Films from Time-Resolved Photoluminescence

Florian Staub;Hannes Hempel;Jan-Christoph Hebig;Jan Mock

280
Citations
Optical Control of Excitons in a Pair of Quantum Dots Coupled by the Dipole-Dipole Interaction

Thomas Unold;Kerstin Mueller;Christoph Lienau;Thomas Elsaesser

261
Citations
Cliff-like conduction band offset and KCN-induced recombination barrier enhancement at the CdS/Cu2ZnSnS4 thin-film solar cell heterojunction

M. Bär;B.-A. Schubert;B. Marsen;R. G. Wilks

247
Citations
Tuning halide perovskite energy levels

Laura Canil;Tobias Cramer;Beatrice Fraboni;Damiano Ricciarelli

229
Citations
Improved performance of Ge‐alloyed CZTGeSSe thin‐film solar cells through control of elemental losses

Charles J. Hages;Sergej Levcenco;Caleb K. Miskin;Jan H. Alsmeier

226
Citations
21.6%-Efficient Monolithic Perovskite/Cu(In,Ga)Se2 Tandem Solar Cells with Thin Conformal Hole Transport Layers for Integration on Rough Bottom Cell Surfaces

Marko Jošt;Tobias Bertram;Dibyashree Koushik;Jose A. Marquez

219
Citations
Unveiling microscopic carrier loss mechanisms in 12% efficient Cu2ZnSnSe4 solar cells

Unknown

205
Citations
Optical Stark Effect in a Quantum Dot: Ultrafast Control of Single Exciton Polarizations

Thomas Unold;Kerstin Mueller;Christoph Lienau;Thomas Elsaesser

182
Citations
Gallium gradients in Cu(In,Ga)Se2 thin‐film solar cells

Wolfram Witte;Daniel Abou-Ras;Karsten Albe;Gottfried H. Bauer

173
Citations
Fine‐Tuning the Sn Content in CZTSSe Thin Films to Achieve 10.8% Solar Cell Efficiency from Spray‐Deposited Water–Ethanol‐Based Colloidal Inks

Gerardo Larramona;Sergiu Levcenko;Stéphane Bourdais;Alain Jacob

168
Citations