Giulia Grancini

Cette personne n’est plus à l’EPFL

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Publications associées (48)

Copper Thiocyanate Inorganic Hole-Transporting Material for High-Efficiency Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Cristina Roldán Carmona, Iwan Zimmermann, Giulia Grancini

In this Letter we show that the mixed perovskite in the form of (FAPbI(3))(0.85)(MAPbBr(3))(0.15) in combination with CuNCS as p-type hole conductor leads to over 16% power conversion efficiency (PCE) under full sun illumination and yields a remarkable mon ...

Amer Chemical Soc2016

Vibrational Response of Methylammonium Lead Iodide: From Cation Dynamics to Phonon-Phonon Interactions

Giulia Grancini, Filippo de Angelis

The dynamic evolution of the vibrational interactions in the prototypical CH3NH3PbI3 was studied through a comprehensive experimental and theoretical investigation with a focus on the interactions between the organic cations and the inorganic cage. To date ...

Wiley-VCH Verlag Berlin2016

Beneficial Role of Reduced Graphene Oxide for Electron Extraction in Highly Efficient Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Yonghui Lee, Kyung Taek Cho, Sanghyun Paek, Giulia Grancini

In this work we systematically investigated the role of reduced graphene oxide (rGO) in hybrid perovskite solar cells (PSCs). By mixing rGO within the mesoporous TiO2 (m-TiO2) matrix, highly efficient solar cells with power conversion efficiency values up ...

Wiley-VCH Verlag Berlin2016

Intrinsic Halide Segregation at Nanometer Scale Determines the High Efficiency of Mixed Cation/Mixed Halide Perovskite Solar Cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Kevin Sivula, Xavier Adrian Jeanbourquin, Paul Gratia, Yonghui Lee, Iwan Zimmermann, Giulia Grancini, Filippo de Angelis

Compositional engineering of a mixed cation/mixed halide perovskite in the form of (FAP-bI(3))(0.85)(MAPbBr(3))(0.15) is one of the most effective strategies to obtain record-efficiency perovskite solar cells. However, the perovskite self-organization upon ...

2016

Enhanced TiO2/MAPbI(3) Electronic Coupling by Interface Modification with PbI2

Mohammad Khaja Nazeeruddin, Paul Gratia, Cristina Roldán Carmona, Iwan Zimmermann, Giulia Grancini, Filippo de Angelis

Amer Chemical Soc2016

PbI2–HMPA Complex Pretreatment for Highly Reproducible and Efficient CH3NH3PbI3 Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Quentin Thomas Jeangros, Emad Oveisi, Peng Gao, Yonghui Lee, Sanghyun Paek, Giulia Grancini, Yi Zhang

Interfacial engineering of the meso-TiO2 surface through a modified sequential deposition procedure involving a novel PbI2–HMPA complex pretreatment is conducted as a reproducible method for preparing MAPbI3 based perovskite solar cells providing the highe ...

2016

CH3NH3PbI3 perovskite single crystals: surface photophysics and their interaction with the environment

Giulia Grancini, Filippo de Angelis

Here we identify structural inhomogeneity on a micrometer scale across the surface of a CH3NH3PbI3 perovskite single crystal. At the crystal edge a local distortion of the crystal lattice is responsible for a widening of the optical bandgap and faster phot ...

Royal Soc Chemistry2015

High efficiency methylammonium lead triiodide perovskite solar cells: the relevance of non-stoichiometric precursors

Michael Graetzel, Mohammad Khaja Nazeeruddin, Paul Gratia, Peng Gao, Cristina Roldán Carmona, Iwan Zimmermann, Giulia Grancini

Methylammonium lead iodide perovskite solar cells with improved performance and stability have been successfully prepared by using a non-stoichiometric PbI2 : CH3NH3I ratio in the precursor solution, and yield a power conversion efficiency (PCE) of above 1 ...

Royal Soc Chemistry2015

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