Publications de Arun Aby Paraecattil

Dataset of "Hot Carrier Mobility Dynamics Unravel Competing Subpicosecond Processes in Lead Halide Perovskites"

Jacques-Edouard Moser, Ahmad Ajdar Zadeh Oskouei, Arun Aby Paraecattil, Aurélien René Willauer, Andrés Burgos Caminal, Juan Manuel Moreno Naranjo

Dataset underpinning the published article: A. Burgos-Caminal; J. M. Moreno-Naranjo; A. R. Willauer; A. A. Paraecattil; A. Ajdarzadeh and J.-E. Moser. Hot Carrier Mobility Dynamics Unravel Competing Subpicosecond Processes in Lead Halide Perovskites. J. Ph ...

2021

Hot Carrier Mobility Dynamics Unravel Competing Subpicosecond Processes in Lead Halide Perovskites

Jacques-Edouard Moser, Ahmad Ajdar Zadeh Oskouei, Arun Aby Paraecattil, Aurélien René Willauer, Andrés Burgos Caminal, Juan Manuel Moreno Naranjo

The mechanisms behind the large photocarrier diffusion length and the outstanding photovoltaic performances of lead halide perovskites (LHP) are still debated. Hot carrier cooling and the formation of polarons are central to the charge separation process. ...

2021

Correlation of fluorescence microscopy, electron microscopy, and NanoSIMS stable isotope imaging on a single tissue section

Quentin Thomas Jeangros, Arun Aby Paraecattil, Anders Meibom, Stéphane Laurent Escrig, Gaëlle Delphine Toullec, Céline Edith Loussert-Fonta

Correlative light and electron microscopy allows localization of specific molecules at the ultrastructural level in biological tissue but does not provide information about metabolic turnover or the distribution of labile molecules, such as micronutrients. ...

NATURE PUBLISHING GROUP2020

The “language” of endosymbiotic partners. “A correlative workflow combining cryo-preparation, fluorescence/electron microscopy, and NanoSIMS imaging to “listen” to the molecular and metabolic dialogue between partners in symbiotic corals”

Arun Aby Paraecattil, Anders Meibom, Gaëlle Delphine Toullec, Céline Edith Loussert-Fonta

2019

A Time-Resolved Photophysical Study of Hybrid Organic-Inorganic Perovskite Photovoltaic Materials

Arun Aby Paraecattil

The search for new photovoltaic materials has been driven by the combined need to exploit sources of energy that are clean and sustainable, while simultaneously doing it in a cost effective manner. In this light, hybrid organic-inorganic perovskites have r ...

EPFL2017

Dynamics of Photocarrier Separation in MAPbI3 Perovskite Multigrain Films under a Quasistatic Electric Field

Jacques-Edouard Moser, Joël Teuscher, Jelissa Risse, Arun Aby Paraecattil, Vytenis Pranculis

Applying time-resolved electroabsorption spectroscopy for the first time to methylammonium lead triiodide perovskite (MAPbI3) thin films under reverse bias, we monitored optically the ultrafast evolution of the local counter-electric field produced by the ...

American Chemical Society2016

Dynamics of Interfacial Charge Transfer States and Carriers Separation in Dye-Sensitized Solar Cells: A Time-Resolved Terahertz Spectroscopy Study

Jacques-Edouard Moser, Jan Cornelius Brauer, Arianna Marchioro, Ahmad Ajdar Zadeh Oskouei, Arun Aby Paraecattil

Electron injection from a photoexcited molecular sensitizer into a wide-bandgap semiconductor is the primary step toward charge separation in dye-sensitized solar cells (DSSCs). According to the current understanding of DSSCs functioning mechanism, charges ...

American Chemical Society2015

Charge Separation Pathways in a Highly Efficient Polymer:Fullerene Solar Cell Material

Arun Aby Paraecattil, Natalie Renuka Banerji

PBDTTPD is one of the best conjugated polymers for solar cell applications (up to 8.5% efficiency). We have investigated the dynamics of charge generation in the blend with fullerene (PCBM) and addressed highly relevant topics such as the role of bulk hete ...

Amer Chemical Soc2014

The influence of microstructure on charge separation dynamics in organic bulk heterojunction materials for solar cell applications

Jacques-Edouard Moser, Natalie Stingelin, Arun Aby Paraecattil, Mariateresa Scarongella, Natalie Renuka Banerji

Light-induced charge formation is essential for the generation of photocurrent in organic solar cells. In order to gain a better understanding of this complex process, we have investigated the femtosecond dynamics of charge separation upon selective excita ...

Royal Society of Chemistry2014

Intensity Dependent Femtosecond Dynamics in a PBDTTPD-Based Solar Cell Material

Jacques-Edouard Moser, Arun Aby Paraecattil, Natalie Renuka Banerji

PBDTTPD is a conjugated polymer with high power conversion efficiency if used in organic solar cells together with fullerene derivatives. We have investigated forthe first time the excited state dynamics of pristine PBDTTPD thin film as well as the ultrafa ...

Amer Chemical Soc2012