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1. Graphene assisted III-V layer epitaxy for transferable solar cells

Author

Macías, Carlos, primary, Tamsaout, Dyhia, additional, Cavanna, Antonella, additional, Madouri, Ali, additional, Béchu, Solène, additional, Travers, Laurent, additional, Harmand, Jean-Christophe, additional, Collin, Stéphane, additional, Cattoni, Andrea, additional, and Delamarre, Amaury, additional

Published
2023
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3. A path toward 25%-efficient ultrathin GaAs solar cells

Author

Frouin, Berengere, primary, Cattoni, Andrea, additional, Chen, Hung-Ling, additional, Höhn, Oliver, additional, Lackner, David, additional, Siefer, Gerald, additional, Faustini, Marco, additional, Dimroth, Frank, additional, and Collin, Stéphane, additional

Published
2021
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5. Fabrication and optical characterization of ultrathin III-V transferred heterostructures for hot-carrier absorbers

Author

Giteau, Maxime, Watanabe, Kentaroh, Miyashita, Naoya, Sodabanlu, Hassanet, Suchet, Daniel, Goffard, Julie, Delamarre, Amaury, Tamaki, Ryo, Jehl, Zacharie, Lombez, Laurent, Sugiyama, Masakazu, Cattoni, Andrea, Collin, Stéphane, Guillemoles, Jean-François, Okada, Yoshitaka, Tokyo University of Science [Tokyo], Institut Photovoltaïque d’Ile-de-France (UMR) (IPVF), École polytechnique (X)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-TOTAL FINA ELF-EDF (EDF)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Photovoltaïque d’Ile-de-France (ITE) (IPVF)-Air Liquide [Siège Social], Institut Photovoltaïque d’Ile-de-France (ITE) (IPVF), Centre de Nanosciences et de Nanotechnologies (C2N), and Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
Fabrication, Materials science, Band gap, Population, 02 engineering and technology, 01 natural sciences, 7. Clean energy, law.invention, law, 0103 physical sciences, Solar cell, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, education, ComputingMilieux_MISCELLANEOUS, Power density, 010302 applied physics, education.field_of_study, [PHYS.PHYS]Physics [physics]/Physics [physics], business.industry, Photovoltaic system, Heterojunction, 021001 nanoscience & nanotechnology, Light intensity, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Optoelectronics, 0210 nano-technology, business
Abstract

A hot-carrier solar cell (HCSC) is a high-efficiency photovoltaic concept where electrons and holes are at a higher temperature than the lattice, allowing an additional thermoelectric energy conversion. There are two requirements for a HCSC: establishing a hot-carrier population and converting the temperature into extra voltage through energy-selective contacts. We focus on the generation of hot carriers, and the design of absorbers that can make this generation easier. Fundamentally, this requires to increase the power density absorbed per volume unit, so the photocarriers cannot fully thermalize (phonon bottleneck). Beyond simply increasing the light intensity, the main control knobs to favor hot carriers include reducing the thickness of the absorber, increasing its absorptivity, and reducing its bandgap. In this proceeding, we report the fabrication of structures that aim at measuring the influence of these different parameters. We justify our choices for sample structure and fabrication method from the need for high thermal conductivity, in order to prevent lattice heating. We characterize our structures in order to determine precisely the final thickness of all layers, and the absorptivity of the absorber layer. These samples are to be used for an analysis of the temperature with many variable parameters, in order to better understand the thermalization mechanisms and design better absorbers. Ultimately, our objective is to implement all solutions together in order to evidence a hot carrier population under concentrated sunlight illumination.

Published
2020

6. Experimental investigation of performances enhancement in hot carrier solar cells: improvements and perspectives (Conference Presentation)

Author

Lombez, Laurent, primary, Nguyen, Dac-Trung, additional, Gibelli, François, additional, Goffard, Julie, additional, Cattoni, Andrea, additional, Boyer-Richard, Soline, additional, Le Corre, Alain, additional, Durand, Olivier, additional, Collin, Stéphane, additional, and Guillemoles, Jean-François, additional

Published
2019
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7. Light absorption enhancement in ultra-thin layers for hot-carrier solar cells: first developments towards the experimental demonstration of an enhanced hot-carrier effect with light trapping

Author

Miyashita, Naoya, primary, Goffard, Julie, primary, Jehl, Zacharie, primary, Tamaki, Ryo, primary, Lombez, Laurent, primary, Suchet, Daniel, primary, Giteau, Maxime, primary, Okada, Yoshitaka, primary, Guillemoles, Jean-François, primary, Collin, Stephane, primary, Cattoni, Andrea, primary, Watanabe, Kentaroh, primary, Delamarre, Amaury, primary, Sodabanlu, Hassanet, primary, and Sugiyama, Masakazu, primary

Published
2019
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9. Broadband light-trapping in ultra-thin nano-structured solar cells

Author

Colin, Clément, primary, Massiot, Inès, additional, Cattoni, Andrea, additional, Vandamme, Nicolas, additional, Dupuis, Christophe, additional, Bardou, Nathalie, additional, Gerard, Isabelle, additional, Naghavi, Negar, additional, Guillemoles, Jean-François, additional, Pelouard, Jean-Luc, additional, and Collin, Stéphane, additional

Published
2013
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