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
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Journal ArticleDOI
Hyperbranched self-assembled photoanode for high efficiency dye-sensitized solar cells
Luca Passoni,Luca Passoni,Fabrizio Giordano,Shaik M. Zakeeruddin,Michael Grätzel,Fabio Di Fonzo +5 more
TL;DR: In this paper, the morphology of self-assembled hyperbranched quasi 1D nanostructures can be engineered by physical vapour deposition in order to maximize light harvesting and electron transport.
Journal ArticleDOI
Double D–π–A Dye Linked by 2,2′‐Bipyridine Dicarboxylic Acid: Influence of para‐ and meta‐Substituted Carboxyl Anchoring Group
Paramaguru Ganesan,Paramaguru Ganesan,Aravind Kumar Chandiran,Aravind Kumar Chandiran,Peng Gao,Renganathan Rajalingam,Michael Grätzel,Mohammad Khaja Nazeeruddin +7 more
TL;DR: The results suggest that dicarboxyl-2,2'-bipyridine can be used as an acceptor for metal-free organic sensitizers, however, the anchoring segments should be adjusted to the favorable position of the corresponding donor-bridge moieties for better conjugation.
Proceedings ArticleDOI
Electron donor-acceptor distance dependence of the dynamics of light-induced interfacial charge transfer in the dye-sensitization of nanocrystalline oxide semiconductors
Bernard Wenger,Christophe Bauer,Mohammad Khaja Nazeeruddin,Pascal Comte,Shaik M. Zakeeruddin,Michael Grätzel,Jacques-E. Moser +6 more
TL;DR: In this article, the effect of electronic and nuclear factors on the dynamics of dye-to-semiconductor electron transfer was studied employing Ru II (terpy)(NCS) 3 sensitizers grafted onto transparent films made of titanium dioxide nanoparticles.
Book ChapterDOI
Ionic Conductivity of Organic–Inorganic Perovskites: Relevance for Long-Time and Low Frequency Behavior
Giuliano Gregori,Tae-Youl Yang,Alessandro Senocrate,Alessandro Senocrate,Michael Grätzel,Joachim Maier +5 more
TL;DR: In this article, the relevance of the ionic transport in hybrid organic-inorganic perovskites was discussed, where the occurrence of significant ionic conductivity along with electronic conductivity leads to stoichiometric polarization on current flow, which yields a large apparent dielectric constant at low frequencies and a pronounced hysteresis behavior in i-V sweep experiments.
Journal ArticleDOI
Optimization of parameters of an electrochemical photovoltaic regenerative solar cell
Ivo Roušar,Miroslav Rudolf,Petr Lukášek,Ladislav Kavan,Nicholas Papageorgiou,Michael Grätzel +5 more
TL;DR: In this article, the physical and geometrical parameters of an electrochemical photovoltaic regenerative solar cell with current leads located on opposite sides of a cell unit were studied.