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.
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Journal ArticleDOI
Effect of Cs-Incorporated NiOx on the Performance of Perovskite Solar Cells
Hui-Seon Kim,Ji-Youn Seo,Haibing Xie,Monica Lira-Cantu,Shaik M. Zakeeruddin,Michael Grätzel,Anders Hagfeldt +6 more
TL;DR: The effect of Cs-incorporated NiOx on perovskite solar cells with an inverted structure was investigated, where NiOx and PCBM were used as selective contacts for holes and electrons, respectively, finding that the generation of an Ni phase in an NiOx layer was significantly suppressed by employing cesium.
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Nanoscale Phase Segregation in Supramolecular π-Templating for Hybrid Perovskite Photovoltaics from NMR Crystallography
Michael A. Hope,Toru Nakamura,Toru Nakamura,Paramvir Ahlawat,Aditya Mishra,Manuel Cordova,Farzaneh Jahanbakhshi,Marko Mladenović,Rashmi Runjhun,Rashmi Runjhun,Lena Merten,Alexander Hinderhofer,Brian Carlsen,Dominik J. Kubicki,Renana Gershoni-Poranne,Thomas Schneeberger,Loï C. Carbone,Yuhang Liu,Shaik M. Zakeeruddin,Janusz Lewiński,Anders Hagfeldt,Frank Schreiber,Ursula Rothlisberger,Michael Grätzel,Jovana V. Milić,Lyndon Emsley +25 more
TL;DR: In this article, the authors demonstrate the use of nuclear magnetic resonance (NMR) crystallography in determining the structure of layered hybrid perovskites for a mixed-spacer model composed of 2-phenylethylammonium (PEA+) and 2-(perfluorophenyl)ethylammium (FEA+) moieties, revealing nanoscale phase segregation.
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High-voltage (1.8 V) tandem solar cell system using a GaAs/AlXGa(1-X)As graded solar cell and dye-sensitised solar cells with organic dyes having different absorption spectra
Seigo Ito,Seigo Ito,I. M. Dharmadasa,G.J. Tolan,J.S. Roberts,G. Hill,H. Miura,Jun-Ho Yum,Peter Pechy,Paul Liska,Pascal Comte,Michael Grätzel +11 more
TL;DR: In this paper, three organic dyes with different absorption spectra (D131, D102 and D205) were used in the DSCs, in order to match the photocurrent density between DSC and the GGC.
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Stabilizing organic photocathodes by low-temperature atomic layer deposition of TiO2
Ludmilla Steier,Sebastiano Bellani,Hansel Comas Rojas,Linfeng Pan,Mikko Laitinen,Timo Sajavaara,Fabio Di Fonzo,Michael Grätzel,Maria Rosa Antognazza,Matthew T. Mayer +9 more
TL;DR: In this article, a low-temperature atomic layer deposition (ALD) of TiO2 onto a P3HT:PCBM polymer blend surface for stable high-performance organic PEC photocathodes was demonstrated.
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Structural and photocatalytic properties of perovskite-type (La,Ca)Ti(O,N)3 prepared from A-site deficient precursors
Alexandra E. Maegli,Takashi Hisatomi,Eugenio H. Otal,Songhak Yoon,Simone Pokrant,Michael Grätzel,Anke Weidenkaff +6 more
TL;DR: In this paper, a series of oxide precursors for perovskite-type (La,Ca)Ti(O,N)3 were prepared by adding Ca2+ to A-site deficient LaTiO3.5 homogeneously (Ca2+-substitution).