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Xavier A. Jeanbourquin
Researcher at École Polytechnique Fédérale de Lausanne
Publications - 21
Citations - 769
Xavier A. Jeanbourquin is an academic researcher from École Polytechnique Fédérale de Lausanne. The author has contributed to research in topics: Organic solar cell & Thin film. The author has an hindex of 12, co-authored 21 publications receiving 610 citations. Previous affiliations of Xavier A. Jeanbourquin include Imperial College London.
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Journal ArticleDOI
Intrinsic Halide Segregation at Nanometer Scale Determines the High Efficiency of Mixed Cation/Mixed Halide Perovskite Solar Cells
Paul Gratia,Giulia Grancini,Jean-Nicolas Audinot,Xavier A. Jeanbourquin,Edoardo Mosconi,Iwan Zimmermann,David Dowsett,Yonghui Lee,Michael Grätzel,Filippo De Angelis,Kevin Sivula,Tom Wirtz,Mohammad Khaja Nazeeruddin +12 more
TL;DR: The nanoscale charge carrier and elemental distribution of mixed perovskite films yielding 20% efficient devices are mapped and a novel in-house-developed high-resolution helium ion microscope coupled with a secondary ion mass spectrometer is combined with Kelvin probe force microscopy to provide unprecedented understanding of the nanoscales perovSKite composition.
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Evaluating Charge Carrier Transport and Surface States in CuFeO2 Photocathodes
Mathieu S. Prévot,Xavier A. Jeanbourquin,Wiktor S. Bourée,Fatwa F. Abdi,Dennis Friedrich,Roel van de Krol,Néstor Guijarro,Florian Le Formal,Kevin Sivula +8 more
TL;DR: In this paper, a detailed investigation on sol-gel-processed CuFeO2 with a range of spectroscopic, PEC, and microscopy techniques aimed at unraveling the material properties governing photogenerated charge carrier harvesting in this material.
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Evaluating spinel ferrites MFe2O4 (M = Cu, Mg, Zn) as photoanodes for solar water oxidation: prospects and limitations
Néstor Guijarro,Pauline Bornoz,Mathieu S. Prévot,Xiaoyun Yu,Xiaodi Zhu,Melissa Johnson,Xavier A. Jeanbourquin,F. Le Formal,Kevin Sivula +8 more
TL;DR: In this paper, nanostructured thin-film electrodes of three representative spinels, namely, CuFe2O4 (CFO), MgFe 2O 4 (MFO), and ZnFe 2 O 4 (ZFO), are prepared by a solution-based approach and their photoelectrochemical properties are comprehensively characterized.
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A Bottom‐Up Approach toward All‐Solution‐Processed High‐Efficiency Cu(In,Ga)S2 Photocathodes for Solar Water Splitting
Néstor Guijarro,Mathieu S. Prévot,Xiaoyun Yu,Xavier A. Jeanbourquin,Pauline Bornoz,Wiktor S. Bourée,Melissa Johnson,Florian Le Formal,Kevin Sivula +8 more
TL;DR: In this article, a straightforward and all-solution-processable approach for the fabrication of highly efficient photocathodes based on Cu(In,Ga)S-2 is reported for the first time.
Journal ArticleDOI
Rediscovering a Key Interface in Dye-Sensitized Solar Cells: Guanidinium and Iodine Competition for Binding Sites at the Dye/Electrolyte Surface
Xavier A. Jeanbourquin,Xiaoe Li,ChunHung Law,Piers R. F. Barnes,Robin Humphry-Baker,Peter Lund,Muhammad Asghar,Brian C. O’Regan +7 more
TL;DR: It is asserted that the dye layer/electrolyte interaction is at least, and probably more, important in DSSC operation and development.