Publications related to Nanocrystalline silicon oxide stacks for silicon heterojunction solar cells for hot climates

Related publications (21)

Hydrogenated Amorphous Silicon Charge-Selective Contact Devices on a Polyimide Flexible Substrate for Dosimetry and Beam Flux Measurements

Nicolas Würsch, Jonathan Emanuel Thomet, Sylvain Dunand

Hydrogenated amorphous silicon (a-Si:H) devices on flexible substrates are currently being studied for application in dosimetry and beam flux measurements. The necessity of in vivo dosimetry requires thin devices with maximal transparency and flexibility. ...

MDPI2025

Helical interfacial modulation for perovskite photovoltaics

Michael Graetzel, Shaik Mohammed Zakeeruddin, Felix Thomas Eickemeyer, Hong Zhang, Jovana Milic, Ghewa Alsabeh, Marco Alejandro Ruiz Preciado

Hybrid metal halide perovskites have demonstrated remarkable performances in modern photovoltaics, although their stabilities remain limited. We assess the capacity to advance their properties by relying on interfacial modulators featuring helical chiralit ...

Royal Soc Chemistry2024

Optical spectroscopy of earth-abundant zinc pnictides for photovoltaics

Elias Zsolt Stutz

Zinc phosphide (Zn3P2) is an earth-abundant semiconductor with promising properties for applications as an absorber in photovoltaics. To beat the 40 years old record power conversion efficiency of solar cells made with this material, a deep understanding o ...

EPFL2022

Influence of Light Soaking on Silicon Heterojunction Solar Cells With Various Architectures

Christophe Ballif, Matthieu Despeisse, Mathieu Gérard Boccard, Jan Haschke, Jean Cattin, Bertrand Yves Paul Paviet-Salomon, Laurie-Lou Senaud

In this article, we investigate the effect of prolonged light exposure on silicon heterojunction solar cells. We show that, although light exposure systematically improves solar cell efficiency in the case of devices using intrinsic and p-type layers with ...

2021

Photoinduced processes in hybrid perovskite for optoelectronics

Valentin Ianis Emmanuel Queloz

Hybrids organic-inorganic perovskite(HOP) solar cells have unequivocally the potential for being a new generation of solar panels with a lower cost and a greater efficiency than well-known silicon solar panels. Today, even if HOPs are seen as one of the be ...

EPFL2021

Passivating Polysilicon Recombination Junctions for Crystalline Silicon Solar Cells

Christophe Ballif, Franz-Josef Haug, Aïcha Hessler-Wyser, Quentin Thomas Jeangros, Andrea Ingenito, Mario Joe Lehmann, Philippe Wyss, Audrey Marie Isabelle Morisset

Polysilicon recombination junctions whose n-type bottom layers double as a passivating contact to the silicon surface are investigated. Such recombination junctions are a key element in the interconnection of tandem devices with a silicon bottom cell, and ...

2021

Template-Assisted Formation of High-Quality alpha-Phase HC(NH2)(2)PbI3 Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Tom Theodorus Antonius Lummen, Yong Ding

Formamidinium (FA) lead halide (alpha-FAPbI(3)) perovskites are promising materials for photovoltaic applications because of their excellent light harvesting capability (absorption edge 840 nm) and long carrier diffusion length. However, it is extremely di ...

2019

Intrinsic and interfacial kinetics of perovskite solar cells under photo and bias-induced degradation and recovery

Michael Graetzel, Shaik Mohammed Zakeeruddin, Daniel Prochowicz, Essa Awadh R Alharbi

Perovskite solar cells (PSCs) have emerged as a potential candidate for high efficiency low-cost photovoltaic technology. However, the intrinsic and interfacial responses of PSCs under photo and bias-induced degradation and recovery have not been clearly u ...

Royal Society of Chemistry2017

Energy demand and urban microclimate of old and new residential districts in a hot arid climate

Jean-Louis Scartezzini, Silvia Coccolo, Dasaraden Mauree, Sameh Monna

Different climates may need different design strategies for optimal thermal performance of buildings: the relationship between different texture of the cities (their form and morphology), the energy demand of buildings and the outdoor microclimate are esse ...

2016

Mesoporous carbon-imbedded W2C composites as flexible counter electrodes for dye-sensitized solar cells

Ulf Anders Hagfeldt

Mesoporous carbon (MC)-imbedded tungsten carbide (W2C) composites are synthesized via a simple methodology and subsequently used as flexible counter electrodes (CEs) in dye-sensitized solar cells (DSCs). The W2C/MC composite possesses remarkable electroche ...

Royal Society of Chemistry2016

Optical and structural analysis of sol-gel derived Cu-Co-Mn-Si oxides for black selective solar nanocomposite multilayered coatings

Aïcha Hessler-Wyser, Andreas Schueler, Olivia Valérie Charlotte Bouvard, Marina Aymara González Lazo, Martin Joly, Thomas Gascou, Pierre Loesch

In this paper, we report the preparation of the precursor solutions for the deposition of Cu-Co-Mn-Si oxides by a sot-gel method in order to produce black selective coatings for CSP receiver tubes. Their optical properties were investigated by means of spe ...

Elsevier2015

Femtosecond X-ray absorption study of electron localization in photoexcited anatase TiO2

Majed Chergui, Edoardo Baldini, Jochen Rittmann, Fabio Giacomo Santomauro, Mahsa Silatani, Andrea Lübcke, Patric Zimmermann

Transition metal oxides are among the most promising solar materials, whose properties rely on the generation, transport and trapping of charge carriers (electrons and holes). Identifying the latter's dynamics at room temperature requires tools that combin ...

Nature Publishing Group2015

The sensitivity of predicted energy use to urban geometrical factors in various climates

Marilyne Andersen, Emmanuel Rey, Émilie Nault, Parag Rastogi

Urban morphology, including building typology and layout, has a significant influence on the built environment’s access to the sun, which impacts its energy exchange with the environment. This energy exchange is a strong factor in determining the comfort l ...

2015

Harnessing the open-circuit voltage via a new series of Ru(II) sensitizers bearing (iso-)quinolinyl pyrazolate ancillaries

Michael Graetzel, Mohammad Khaja Nazeeruddin

A novel class of Ru(II) sensitizers (TFRS-51-TFRS-54) with a 4,40'-dicarboxy-2,2'-bipyridine anchoring ligand and two trans-oriented isoquinolinyl (or quinolinyl) pyrazolate ancillaries were designed, characterized and used to fabricate dye sensitized sola ...

Royal Society of Chemistry2013

Highly transparent ZnO bilayers by LP-MOCVD as front electrodes for thin-film micromorph silicon solar cells

Christophe Ballif, Sylvain Nicolay, Matthieu Despeisse, Mathieu Gérard Boccard, Laura Ding, Grégory Bugnon

ZnO bilayer films were deposited by a low-pressure metalorganic chemical vapor deposition technique in a single process step, by doping with boron only the nucleation stage of the growth. The resulting 2 pm thick layers are characterized by low free carrie ...

Elsevier2012

Solid-State Sensitized Heterojunction Solar Cells : Effect of Sensitizing Systems on Performance and Stability

Soo-Jin Moon

Dye-sensitized solar cells (DSCs) are considered as an emerging technology in order to replace conventional silicon solar cells or thin film solar cells such as amorphous silicon, CIGS, and CdTe. Liquid electrolytes containing iodide/triiodide redox couple ...

EPFL2011

Excitation of plasmon and guided-mode resonances in thin film silicon solar cells

Franz-Josef Haug

Thin film silicon solar cells are an attractive option for the production of sustainable energy but their low response at long wavelengths requires additional measures for absorption enhancement. The most successful concepts are based on light scattering i ...

2011

Organic dyes incorporating low-band-gap chromophores based on pi-extended benzothiadiazole for dye-sensitized solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin

A series of new it-conjugated organic dyes (HKK-BTZ1, HKK-BTZ2, HKK-BTZ3 and HKK-BTZ4), comprising triphenylamine (TPA) moieties as the electron donor and benzothiadiazole moieties as the electron acceptor/anchoring groups, was synthesized for the use in d ...

Elsevier2011

On the Morphology and Interfaces of Nanostructured Hematite Photoanodes for Solar-Driven Water Splitting

Florian Le Formal

A sustainable route to store the energy provided by the Sun, is to directly convert sunlight into molecular hydrogen using a semiconductor performing water photolysis. Hematite (α-Fe2O3) is promising for this application due to its ample abundance, chemica ...

EPFL2011

Ultra-Light Asymmetric Photovoltaic Sandwich Structures

Jan-Anders Edvin Maansson, Yves Leterrier

This work evaluated the possibility of using silicon solar cells as load-carrying elements in composite sandwich structures. Such an ultra-light multifunctional structure is a new concept enabling weight, and thus energy, to be saved in high-tech applicati ...

Elsevier2009