M
Michael Grätzel
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 1476
Citations - 335642
Michael Grätzel is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Dye-sensitized solar cell & Perovskite (structure). The author has an hindex of 248, co-authored 1423 publications receiving 303599 citations. Previous affiliations of Michael Grätzel include University of California, Berkeley & Siemens Energy Sector.
Papers
More filters
Journal ArticleDOI
Utilization of Direct and Diffuse Sunlight in a Dye-Sensitized Solar Cell — Silicon Photovoltaic Hybrid Concentrator System
Greg D. Barber,Paul G. Hoertz,Seung Hyun Anna Lee,Neal M. Abrams,Janine Mikulca,Thomas E. Mallouk,Paul Liska,Shaik M. Zakeeruddin,Michael Grätzel,Anita Ho-Baillie,Martin A. Green +10 more
TL;DR: In this article, the concept of a tandem hybrid concentrator solar module was demonstrated from a dye-sensitized TiO2 solar cell (DSSCs) and a silicon p−n junction solar cell.
Journal ArticleDOI
Electrochemical Properties of Cu(II/I)-Based Redox Mediators for Dye-Sensitized Solar Cells
Ladislav Kavan,Ladislav Kavan,Yasemin Saygili,Marina Freitag,Marina Freitag,Shaik M. Zakeeruddin,Anders Hagfeldt,Michael Grätzel +7 more
TL;DR: In this article, three Cu(II/I)-phenanthroline and two bipyridine redox mediators were studied on various electrodes and in variety of electrolyte solutions using cyclic voltammetry and impedance spectroscopy.
Journal ArticleDOI
Photodegradation of surfactants. V. Photocatalytic degradation of surfactants in the presence of semiconductor particles by solar exposure
Hisao Hidaka,Shinya Yamada,Shinichi Suenaga,Hayashi Kubota,Nick Serpone,Ezio Pelizzetti,Michael Grätzel +6 more
TL;DR: In this paper, the photodegradation of anionic sodium dodecylbenzenesulphonate (DBS), cationic benzyl-dodecyldimethyl ammonium chloride (BDDAC) and non-ionic p-nonyl-phenyl poly(oxyethylene).
Journal ArticleDOI
Evaluating the Critical Thickness of TiO2 Layer on Insulating Mesoporous Templates for Efficient Current Collection in Dye‐Sensitized Solar Cells
Aravind Kumar Chandiran,Pascal Comte,Robin Humphry-Baker,Florian Kessler,Chenyi Yi,Md. K. Nazeeruddin,Michael Grätzel +6 more
TL;DR: In this article, a conformal overlayer of titanium dioxide on an insulating mesoporous template was used as a photoanode for dye-sensitized solar cells.
Journal ArticleDOI
Evolution of an oxygen NEXAFS transition in the upper Hubbard band in {α}-Fe2O3 upon electrochemical oxidation
Debajeet K. Bora,Artur Braun,Selma Erat,Ahmad Kamal Ariffin,Romy Löhnert,Kevin Sivula,Recardo Manzke,Jörg Töpfer,Michael Grätzel,Thomas Graule,Edwin C. Constable +10 more
TL;DR: In this article, it was shown that a critical electrochemical potential between 200 and 600 mV is necessary to change the electronic structure of the iron oxide at the surface of hematite nano-particulate films, and the electrochemical origin of this transition suggests that it is related with a surface state.