Jean-Luc Brédas

About

Jean-Luc Brédas is a Regents Professor in the Department of Chemistry and Biochemistry at the University of Arizona. He holds a Ph.D. from the University of Namur, Belgium, obtained in 1979, and a B.Sc. from the same university in 1976. His specialties include Energy Science, Materials and Polymer Chemistry, Theory, Modeling, and Simulation. His research focuses on harnessing solar energy through organic and hybrid photovoltaic cells, addressing fundamental issues such as optical absorption, exciton formation, dissociation, charge separation, charge carrier mobility, and charge collection at electrodes. He is particularly interested in donor-acceptor polymers with low band gaps that are used in bulk-heterojunction solar cells due to their wider photon absorption window. Brédas's work aims to improve the photovoltaic response of organic solar cells by tackling these core challenges, contributing to advancements in sustainable energy technologies.

Research topics

• Materials science
• Chemistry
• Nanotechnology
• Optoelectronics
• Photochemistry
• Chemical physics
• Organic chemistry
• Physics
• Atomic physics
• Condensed matter physics

Selected publications

• Delocalization of exciton and electron wavefunction in non-fullerene acceptor molecules enables efficient organic solar cells

  Nature Communications · 2020 · 692 citations

  A major challenge for organic solar cell (OSC) research is how to minimize the tradeoff between voltage loss and charge generation. In early 2019, we reported a non-fullerene acceptor (named Y6) that can simultaneously achieve high external quantum efficiency and low voltage loss for OSC. Here, we use a combination of experimental and theoretical modeling to reveal the structure-property-performance relationships of this state-of-the-art OSC system. We find that the distinctive π-π molecular pac…

  DOI

• A unified description of non-radiative voltage losses in organic solar cells

  Nature Energy · 2021 · 427 citations

  DOI

• Ion-modulated radical doping of spiro-OMeTAD for more efficient and stable perovskite solar cells

  Science · 2022 · 404 citations

  -butylpyridine is a time-consuming process and also leads to poor device stability. We developed a new doping strategy for spiro-OMeTAD that avoids post-oxidation by using stable organic radicals as the dopant and ionic salts as the doping modulator (referred to as ion-modulated radical doping). We achieved PCEs of >25% and much-improved device stability under harsh conditions. The radicals provide hole polarons that instantly increase the conductivity and work function (WF), and ionic salts fur…

  DOI

• Thermally conductive ultra-low-k dielectric layers based on two-dimensional covalent organic frameworks

  Nature Materials · 2021 · 308 citations

  DOI

• [2,1,3]-Benzothiadiazole-Spaced Co-Porphyrin-Based Covalent Organic Frameworks for O₂ Reduction

  ACS Nano · 2023 · 63 citations

  -PorBTD were found to be 10 times and 2.5 times larger than that of Pt/C, respectively. These COFs also exhibit larger power density and recycling stability in Zn-air batteries compared with a Pt/C-based air cathode. A theoretical analysis demonstrates that the combination of Co-porphyrin with two different BTD ligands affords two crystalline porous electrocatalysts having different d-band center positions, which leads to reactivity differences toward alkaline ORR. The strategy, design, and elec…

  DOI

Frequent coauthors

• Seth R. Marder

  501 shared

• Veaceslav Coropceanu

  University of Arizona

  478 shared

• Jérôme Cornil

  University of Mons

  341 shared

• Stephen Barlow

  University of Colorado Boulder

  303 shared

• Chad Risko

  259 shared

• Egbert Zojer

  Graz University of Technology

  239 shared

• Roberto Lazzaroni

  University of Mons

  237 shared

• David Beljonne

  178 shared

Education

• Agregation de L'Enseignesement Superieur ("Habilitation)

  Universite Catholique de Louvain Ecole de Chimie

  1986

• Postdoctoral Fellowship, Chemistry

  Massachusetts Institute of Technology

  1981

• Ph.D., Theoretical Chemistry

  Universite de Namur Département de Chimie

  1979

• B.Sc., Chemistry

  Universite de Namur Département de Chimie

  1976

Similar researchers at University of Arizona

• Ludwik Adamowiczh-67
• Doug Loyh-56
• Dominic McGrathh-35