2026 Karl Leo: 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	129	354	337	18	17	981	65970

Research.com Recognitions

2022 - Research.com Materials Science in Germany Leader Award
2016 - OSA Fellows Karl Leo Technische Universität Dresden, Germany For discoveries in optoelectronic phenomena, such as Bloch oscillations, and for novel devices based on organic semiconductors.
2014 - Member of the European Academy of Sciences

Overview

Karl Leo is affiliated with TU Dresden in Germany and has contributed extensively to research in engineering and materials science. Their work primarily spans electrical and electronic engineering, polymers and plastics, materials chemistry, biomedical engineering, and atomic and molecular physics, and optics.

Their research focuses on topics such as organic electronics and photovoltaics, conducting polymers and applications, perovskite materials and applications, organic light-emitting diodes research, advanced memory and neural computing, advanced sensor and energy harvesting materials, and analytical chemistry and sensors.

Karl Leo has published frequently in several scientific venues, including:

ACS Applied Materials & Interfaces
Advanced Functional Materials
Nature Communications
Advanced Electronic Materials
Advanced Optical Materials

Some notable recent papers authored or coauthored by Karl Leo include:

Organic Solar Cells-The Path to Commercial Success, 2020, Advanced Energy Materials
Reverse dark current in organic photodetectors and the major role of traps as source of noise, 2021, Nature Communications
Bioinspiration in light harvesting and catalysis, 2020, Nature Reviews Materials
Narrowband organic photodetectors - towards miniaturized, spectroscopic sensing, 2021, Materials Horizons
Roadmap on organic-inorganic hybrid perovskite semiconductors and devices, 2021, APL Materials

Among frequent collaborators of Karl Leo are Hans Kleemann, Johannes Benduhn, Shu-Jen Wang, Donato Spoltore, and Shen Xing.

Their contributions have been recognized through awards including:

OSA Fellows, 2016, for discoveries in optoelectronic phenomena such as Bloch oscillations and novel devices based on organic semiconductors
Member of the European Academy of Sciences, 2014

Best Publications

White organic light-emitting diodes with fluorescent tube efficiency

Sebastian Reineke;Frank Lindner;Gregor Schwartz;Nico Seidler

3993
Citations
Highly efficient organic devices based on electrically doped transport layers.

K. Walzer;B. Maennig;M. Pfeiffer;K. Leo

1931
Citations
Highly Conductive PEDOT:PSS Electrode with Optimized Solvent and Thermal Post-Treatment for ITO-Free Organic Solar Cells

Yong Hyun Kim;Christoph Sachse;Michael L. Machala;Christian May

1671
Citations
Efficiency Roll-Off in Organic Light-Emitting Diodes

Caroline Murawski;Karl Leo;Malte C. Gather

1180
Citations
Coherent submillimeter-wave emission from Bloch oscillations in a semiconductor superlattice

Christian Waschke;Hartmut G. Roskos;Ralf Schwedler;Karl Leo

1050
Citations
Triplet-exciton quenching in organic phosphorescent light-emitting diodes with Ir-based emitters

Sebastian Reineke;Karsten Walzer;Karl Leo

925
Citations
High-efficiency and low-voltage p‐i‐n electrophosphorescent organic light-emitting diodes with double-emission layers

Gufeng He;Martin Pfeiffer;Karl Leo;Michael Hofmann

790
Citations
Optical investigation of Bloch oscillations in a semiconductor superlattice.

J. Feldmann;K. Leo;J. Shah;D. A. B. Miller

789
Citations
Degradation Mechanisms and Reactions in Organic Light-Emitting Devices.

Sebastian Scholz;Denis Kondakov;Björn Lüssem;Karl Leo

757
Citations
White organic light-emitting diodes: Status and perspective

Sebastian Reineke;Michael Thomschke;Björn Lüssem;Karl Leo

724
Citations
White organic light-emitting diodes: Status and perspective

Sebastian Reineke;Michael Thomschke;Björn Lüssem;Karl Leo

724
Citations
LOW VOLTAGE ORGANIC LIGHT EMITTING DIODES FEATURING DOPED PHTHALOCYANINE AS HOLE TRANSPORT MATERIAL

J. Blochwitz;M. Pfeiffer;T. Fritz;K. Leo

698
Citations
Doped Organic Transistors.

Björn Lüssem;Chang-Min Keum;Daniel Kasemann;Ben Naab

625
Citations
Doped organic semiconductors: Physics and application in light emitting diodes

M Pfeiffer;K Leo;X Zhou;J.S Huang

593
Citations
Coherent submillimeter-wave emission from charge oscillations in a double-well potential.

H. G. Roskos;M. C. Nuss;Jagdeep Shah;K. Leo

582
Citations
Doping of organic semiconductors

Unknown

565
Citations
Femtosecond energy relaxation in π-conjugated polymers

R. Kersting;R. Kersting;U. Lemmer;U. Lemmer;R. F. Mahrt;R. F. Mahrt;K. Leo;K. Leo

531
Citations
Triplet Harvesting in Hybrid White Organic Light‐Emitting Diodes

Gregor Schwartz;Sebastian Reineke;Thomas Conrad Rosenow;Karsten Walzer

519
Citations
Low-voltage organic electroluminescent devices using pin structures

Jingsong Huang;Martin Pfeiffer;Ansgar Werner;Jan Blochwitz

503
Citations
Organic p -i- n solar cells

B. Maennig;J. Drechsel;D. Gebeyehu;P. Simon

486
Citations
Very-low-operating-voltage organic light-emitting diodes using a p-doped amorphous hole injection layer

X. Zhou;M. Pfeiffer;J. Blochwitz;A. Werner

486
Citations
Harvesting Triplet Excitons from Fluorescent Blue Emitters in White Organic Light‐Emitting Diodes

Gregor Schwartz;Martin Pfeiffer;Sebastian Reineke;Karsten Walzer

480
Citations
Controlled doping of phthalocyanine layers by cosublimation with acceptor molecules: A systematic Seebeck and conductivity study

M. Pfeiffer;A. Beyer;T. Fritz;K. Leo

439
Citations