A5013370729- solar cell performance optimization
- Silicon and Solar Cell Technologies
- Thermal Radiation and Cooling Technologies
- Photovoltaic System Optimization Techniques
- Advanced Thermodynamics and Statistical Mechanics
- Solar Thermal and Photovoltaic Systems
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Chalcogenide Semiconductor Thin Films
- Quantum Electrodynamics and Casimir Effect
- Physics of Superconductivity and Magnetism
- Semiconductor materials and interfaces
- Aging, Elder Care, and Social Issues
- French Urban and Social Studies
- Inorganic Fluorides and Related Compounds
- Superconducting and THz Device Technology
- Photovoltaic Systems and Sustainability
- Advanced Thermodynamic Systems and Engines
- Iron-based superconductors research
- Natural Language Processing Techniques
- Organic Electronics and Photovoltaics
- Superconductivity in MgB2 and Alloys
- Thermal properties of materials
- Iron oxide chemistry and applications
- linguistics and terminology studies
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2022-2024
Université Grenoble Alpes
2017-2024
CEA LITEN
2022-2024
École Polytechnique Fédérale de Lausanne
2017-2020
Centre National de la Recherche Scientifique
2013-2019
Institut polytechnique de Grenoble
2019
Institut Néel
2017-2019
Hamad bin Khalifa University
2019
Qatar Foundation
2019
University of Neuchâtel
2019
Abstract To improve the performance of solar photovoltaic devices one should mitigate three types losses: optical, electrical and thermal. However, further reducing optical losses in modern is becoming increasingly costly. Therefore, there a rising interest minimizing thermal losses. These correspond to reduction power output resultant working at temperatures above 25 °C associated accelerated aging. Here, we quantify impact all possible strategies case mainstream crystalline silicon...
The impacts of radiative, electrical and thermal losses on the power output enhancement nanoscale-gap thermophotovoltaic (nano-TPV) generators consisting a gallium antimonide cell paired with broadband tungsten radiatively-optimized Drude radiator are analyzed. Results reveal that surface mode mediated nano-TPV generation outperforms emitter, dominated by frustrated modes, only for vacuum gap thickness 10 nm if both neglected. key limiting factors tungsten-based devices respectively...
Multijunction cells may offer a cost-effective route to boost the efficiency of industrial photovoltaics. For any technology be deployed in field, its performance under actual operating conditions is extremely important. In this perspective, we evaluate impact spectrum, light intensity, and module temperature variations on tandem devices with crystalline silicon bottom particular focus perovskite top cells. We consider different efficiencies calculate their energy yields using field data...
The introduction of crystalline defects or dopants can give rise to so-called "dirty superconductors", characterized by reduced coherence length and quasiparticle mean free path. In particular, granular superconductors such as Granular Aluminum (GrAl), consisting remarkably uniform grains connected Josephson contacts have attracted interest since the sixties thanks their rich phase diagram practical advantages, like increased critical temperature, field, kinetic inductance. Here we report...
We report on a detailed study of the optical response and ${T}_{c}\text{\ensuremath{-}}\ensuremath{\rho}$ phase diagram (${T}_{c}$ being superconducting critical temperature $\ensuremath{\rho}$ normal state resistivity film) granular aluminum, combining transport measurements high resolution spectroscopy technique. The is discussed as resulting from an interplay between stiffness, Coulomb repulsion, gap $\mathrm{\ensuremath{\Delta}}$. provide direct evidence for two different types well...
This article reports on experimental measurements aimed at assessing general theoretical expressions of temperature coefficients in the case crystalline silicon solar cells. The relevance a recently proposed relation between dependence open-circuit voltage and external radiative efficiency photovoltaic (PV) devices is demonstrated. It also shown that cells made indirect bandgap semiconductors with insufficient light trapping have unusual sensitivities short-circuit current voltage. In...
Abstract The reverse bias stability is a key concern for the commercialization and reliability of halide perovskite photovoltaics. Here, robustness perovskite‐silicon tandem solar cells to electrical degradation down −40 V investigated. two‐terminal configuration, with coupled silicon, can improve cell resistance severe negative voltages when device properly designed. While typically exhibit early breakdown voltages, serial connection silicon large shunt resistances high voltage limits their...
The photovoltaics industry is adopting bifacial systems which offer improved energy harvesting compared to monofacial ones. This stems from the collection of light reflected by surroundings on rear side modules, leading system-level gains typically ranging 5% 25%rel. question arises, however, whether this gain also applies two-terminal (2T) tandem solar cells, since series-connected subcells must generate equivalent currents achieve an optimal performance. Using comprehensive simulations...
We have fabricated planar amorphous Indium Oxide superconducting resonators ($T_c\sim2.8$ K) that are sensitive to frequency-selective radiation in the range of 7 10 GHz. Those values lay far below twice gap worths about 200 The photons detection consists a shift fundamental resonance frequency. show detected frequency can be adjusted by modulating total length resonator. attribute those observations excitation higher-order modes. coupling between lumped and higher order distributed is due...
Solar modules are currently characterized at standard test conditions (STC), defined 1000W/m2 and 25 {\deg}C. However, solar in actual outdoor operating typically operate lower illumination higher temperature than STC, which significantly affects their performance ratio (average harvesting efficiency over STC). Silicon heterojunction (SHJ) technology displays both good coefficient low-illumination performances, leading to outstanding ratios. We investigate here SHJ cells that use a-SiCx(n)...
A new approach is introduced and illustrated for optimizing the performances of photovoltaic cells. thermal criterion, minimization internal heat sources, added to usual criteria that consist minimizing optical electrical losses. proof concept delivered by means modeling in case a standard crystalline silicon (cSi) cell which dependence on temperature optical, electrical, properties well known. numerical code named TASC-1D-cSi simulating optical-radiative, behaviors cSi solar cells used....
The overall efficiency of solar thermophotovoltaic (STPV) systems, which can theoretically reach 85.4%, is function a large number parameters, such as concentration factor, device geometry, cell bandgap, absorber and temperatures,... In actual STPV devices, the temperature depends on chosen configuration characteristics cooling system, i.e. heat transfer coefficient. This article presents an original optimization that takes into account thermal equilibrium PV cell. Simulations demonstrate...
The present article reports on experimental measurements aimed at assessing general theoretical expressions of temperature coefficients in the case crystalline silicon solar cells. relevance a recently proposed relation between dependence open circuit voltage and external radiative efficiency photovoltaic devices is demonstrated. Unusual sensitivities short current cells made an indirect bandgap semiconductor with insufficient light trapping are highlighted.
The power produced by a photovoltaic module is not simply the sum of powers its constituents cells. difference stems from number so-called "cell-to-module" (CTM) gain or loss mechanisms. These are getting more and attention as improvements in cell efficiency becoming harder to achieve. This work focuses on two CTM mechanisms: due recapture light hitting apparent backsheet "empty" spaces around cells serial connection "mismatched" i.e. with different maximum points. In general, for insulation...
The capabilities of a simulation tool for the in-depth analysis thermal impacts on performances solar cells are described. TASC-1D (Thermal Analysis Solar Cells - 1D, version cSi) solves coupled electrical, radiative and transport problems crystalline silicon cell, as function irradiation conditions. In addition to electrical outputs that obtained with existing tools, it provides cell equilibrium temperature well spatial spectral distributions many relevant quantities. physical modeling...