Bernard Geffroy

5.5k citations

136 papers · 4.9k · 1 hit paper · h-index 42

Impact in

Polymers and Plastics top 1%
- Conducting polymers and applications
Electrical and Electronic Engineering top 1%
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Perovskite Materials and Applications

Papers in

Electrical and Electronic Engineering 108
- Organic Light-Emitting Diodes Research 60
- Organic Electronics and Photovoltaics 52
- Perovskite Materials and Applications 23
- Molecular Junctions and Nanostructures 14
- Thin-Film Transistor Technologies 11
Materials Chemistry 56
- Luminescence and Fluorescent Materials 30

Co-authors: Denis Tondelier (80 shared papers)Philippe Le Roy (1 shared paper)Christophe Prat (1 shared paper)Cyril Poriel (20 shared papers)Olivier Jeannin (16 shared papers)Joëlle Rault‐Berthelot (19 shared papers)Yvan Bonnassieux (33 shared papers)Muriel Hissler (19 shared papers)
Journals: Journal of Materials Chemistry C (9 papers)Chemistry - A European Journal (9 papers)Synthetic Metals (7 papers)ACS Applied Materials & Interfaces (5 papers)New Journal of Chemistry (5 papers)
Partner nations: France Netherlands United States

In The Last Decade

Bernard Geffroy

133 papers receiving 4.8k citations

Bernard Geffroy's Hit Papers

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Organic light‐emitting diode (OLED) technology: materials, devices and display technologies 2006 · 850 citations

Peers

Countries citing papers authored by Bernard Geffroy

Since Specialization

Citations

This map shows the geographic impact of Bernard Geffroy's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Bernard Geffroy with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Bernard Geffroy more than expected).

Fields of papers citing papers by Bernard Geffroy

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Bernard Geffroy. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Bernard Geffroy. The network helps show where Bernard Geffroy may publish in the future.

Co-authors

The 25 scholars most cited alongside Bernard Geffroy, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Bernard Geffroy Line = papers co-authored together Bernard Geffroy links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 136 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Organic light‐emitting diode (OLED) technology: materials, devices and display technologies Polymer International ·Bernard Geffroy, Philippe Le Roy, Christophe Prat Hit paper breakdown →	2006	850
2	Design and Synthesis of New Circularly Polarized Thermally Activated Delayed Fluorescence Emitters Journal of the American Chemical Society ·Sophie Feuillastre, Mathilde Pauton, Long‐Hui Gao, Alaric Desmarchelier, Adrian J. Riives, Damien Prim, Denis Tondelier, Bernard Geffroy, Gilles Muller, Gilles Clavier, Grégory Pieters	2016	330
3	Structural Instabilities Related to Highly Anharmonic Phonons in Halide Perovskites The Journal of Physical Chemistry Letters ·Arthur Marronnier, Heejae Lee, Bernard Geffroy, Jacky Even, Yvan Bonnassieux, Guido Roma	2017	146
4	ortho‐, meta‐, and para‐Dihydroindenofluorene Derivatives as Host Materials for Phosphorescent OLEDs Angewandte Chemie International Edition ·Maxime Romain, Sébastien Thiéry, Anna Shirinskaya, Céline Declairieux, Denis Tondelier, Bernard Geffroy, Olivier Jeannin, Joëlle Rault‐Berthelot, Rémi Métivier, Cyril Poriel	2014	138
5	Spirobifluorene Regioisomerism: A Structure–Property Relationship Study Chemistry - A European Journal ·Lambert Sicard, Cassandre Quinton, Jean‐David Peltier, Denis Tondelier, Bernard Geffroy, Urelle Biapo, Rémi Métivier, Olivier Jeannin, Joëlle Rault‐Berthelot, Cyril Poriel	2017	101
6	Tunable Organophosphorus Dopants for Bright White Organic Light‐Emitting Diodes with Simple Structures Advanced Materials ·Omrane Fadhel, M. Gras, Noëlla Lemaître, V. Deborde, Muriel Hissler, Bernard Geffroy, Régis Réau	2008	96
7	Dependence of the Properties of Dihydroindenofluorene Derivatives on Positional Isomerism: Influence of the Ring Bridging Angewandte Chemie International Edition ·Maxime Romain, Denis Tondelier, Jean‐Charles Vanel, Bernard Geffroy, Olivier Jeannin, Joëlle Rault‐Berthelot, Rémi Métivier, Cyril Poriel	2013	94
8	Benzofuran-fused Phosphole: Synthesis, Electronic, and Electroluminescence Properties Organic Letters ·Hui Chen, W. Delaunay, Jing Li, Zuoyong Wang, Pierre‐Antoine Bouit, Denis Tondelier, Bernard Geffroy, François Mathey, Zheng Duan, Régis Réau, Muriel Hissler	2013	90
9	Implementation of submicrometric periodic surface structures toward improvement of organic-solar-cell performances Applied Physics Letters ·C. Cocoyer, L.A. Rocha, L. Sicot, Bernard Geffroy, R. de Bettignies, Carole Sentein, Céline Fiorini‐Debuisschert, Paul Raimond	2006	86
10	A H2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell Energy & Environmental Science ·Tiphaine Bourgeteau, Denis Tondelier, Bernard Geffroy, Romain Brisse, Christel Laberty‐Robert, Stéphane Campidelli, Rémi de Bettignies, Vincent Artero, Serge Palacin, Bruno Jousselme	2013	84
11	9,9′-Spirobifluorene and 4-phenyl-9,9′-spirobifluorene: pure hydrocarbon small molecules as hosts for efficient green and blue PhOLEDs Journal of Materials Chemistry C ·Sébastien Thiéry, Denis Tondelier, Céline Declairieux, Gijun Seo, Bernard Geffroy, Olivier Jeannin, Joëlle Rault‐Berthelot, Rémi Métivier, Cyril Poriel	2014	82
12	Solution, Solid State, and Film Properties of a Structurally Characterized Highly Luminescent Molecular Europium Plastic Material Excitable with Visible Light Inorganic Chemistry ·G. Zucchi, Vajjiravel Murugesan, Denis Tondelier, Dmitry Aldakov, Taewoo Jeon, Feng Yang, P. Thuéry, M. Ephritikhine, Bernard Geffroy	2011	77
13	Spiro-configured phenyl acridine thioxanthene dioxide as a host for efficient PhOLEDs Chemical Communications ·Maxime Romain, Denis Tondelier, Bernard Geffroy, Anna Shirinskaya, Olivier Jeannin, Joëlle Rault‐Berthelot, Cyril Poriel	2014	68
14	White Organic Light‐Emitting Diodes Based on Quench‐Resistant Fluorescent Organophosphorus Dopants Advanced Functional Materials ·Damien O. Joly, Denis Tondelier, V. Deborde, W. Delaunay, Anup Thomas, K. Bhanuprakash, Bernard Geffroy, Muriel Hissler, Régis Réau	2011	66
15	4-Pyridyl-9,9′-spirobifluorenes as Host Materials for Green and Sky-Blue Phosphorescent OLEDs The Journal of Physical Chemistry C ·Sébastien Thiéry, Denis Tondelier, Céline Declairieux, Bernard Geffroy, Olivier Jeannin, Rémi Métivier, Joëlle Rault‐Berthelot, Cyril Poriel	2015	65
16	Spirobifluorene-2,7-dicarbazole-4′-phosphine Oxide as Host for High-Performance Single-Layer Green Phosphorescent OLED Devices Organic Letters ·Sébastien Thiéry, Denis Tondelier, Bernard Geffroy, Emmanuel Jacques, Malo Robin, Rémi Métivier, Olivier Jeannin, Joëlle Rault‐Berthelot, Cyril Poriel	2015	63
17	Direct Experimental Evidence of Halide Ionic Migration under Bias in CH₃NH₃PbI_3–xCl_x-Based Perovskite Solar Cells Using GD-OES Analysis ACS Energy Letters ·Heejae Lee, Sofia Gaiaschi, Patrick Chapon, Arthur Marronnier, Hee Ryung Lee, Jean‐Charles Vanel, Denis Tondelier, Jean‐Éric Bourée, Yvan Bonnassieux, Bernard Geffroy	2017	61
18	Synthesis, Electronic Properties and WOLED Devices of Planar Phosphorus‐Containing Polycyclic Aromatic Hydrocarbons Chemistry - A European Journal ·François Riobé, Rózsa Szűcs, Pierre‐Antoine Bouit, Denis Tondelier, Bernard Geffroy, Fátima Aparicio, Julia Buendı́a, Luis Sánchez, Régis Réau, László Nyulászi, Muriel Hissler	2015	60
19	Electron-Rich 4-Substituted Spirobifluorenes: Toward a New Family of High Triplet Energy Host Materials for High-Efficiency Green and Sky Blue Phosphorescent OLEDs ACS Applied Materials & Interfaces ·Cassandre Quinton, Sébastien Thiéry, Olivier Jeannin, Denis Tondelier, Bernard Geffroy, Emmanuel Jacques, Joëlle Rault‐Berthelot, Cyril Poriel	2017	60
20	Phosphole-based π-conjugated electroluminescent materials for OLEDs New Journal of Chemistry ·Damien O. Joly, Denis Tondelier, V. Deborde, Bernard Geffroy, Muriel Hissler, Régis Réau	2010	60

About Bernard Geffroy

Bernard Geffroy is a scholar working on Electrical and Electronic Engineering, Materials Chemistry, Polymers and Plastics, Organic Chemistry and Atomic and Molecular Physics, and Optics, having authored 136 papers that have together received 4.9k indexed citations. Recurring topics across this work include Organic Light-Emitting Diodes Research (60 papers), Organic Electronics and Photovoltaics (52 papers), Conducting polymers and applications (35 papers), Luminescence and Fluorescent Materials (30 papers), Perovskite Materials and Applications (23 papers), Molecular Junctions and Nanostructures (14 papers), Synthesis and characterization of novel inorganic/organometallic compounds (12 papers) and Thin-Film Transistor Technologies (11 papers). The work is most often cited by research in Polymers and Plastics (1.0k citations), Electrical and Electronic Engineering (3.3k citations), Materials Chemistry (2.4k citations), Organic Chemistry (1.3k citations) and Inorganic Chemistry (423 citations). Bernard Geffroy has collaborated with scholars based in France, Netherlands and United States. Frequent co-authors include Denis Tondelier, Philippe Le Roy, Christophe Prat, Cyril Poriel, Olivier Jeannin, Joëlle Rault‐Berthelot, Yvan Bonnassieux, Muriel Hissler, Sébastien Thiéry and Maxime Romain. Their work appears in journals such as Journal of Materials Chemistry C, Chemistry - A European Journal, Synthetic Metals, ACS Applied Materials & Interfaces and New Journal of Chemistry.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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Bernard Geffroy

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