Results 1 to 10 of about 7,458 (143)

The role of nonequilibrium LO phonons, Pauli exclusion, and intervalley pathways on the relaxation of hot carriers in InGaAs/InGaAsP multi-quantum-wells [PDF]

open access: yesScientific Reports, 2023
Under continuous-wave laser excitation in a lattice-matched In0.53Ga0.47As/In0.8Ga0.2As0.44P0.56 multi-quantum-well (MQW) structure, the carrier temperature extracted from photoluminescence rises faster for 405 nm compared with 980 nm excitation, as the ...
Yongjie Zou   +4 more
doaj   +2 more sources

Quantitative optical assessment of photonic and electronic properties in halide perovskite [PDF]

open access: yesNature Communications, 2019
The electronic and photonic contributions to the power conversion efficiency in solar cell devices are often hard to disentangle. Here Bercegol et al.
Adrien Bercegol   +6 more
doaj   +2 more sources

The influence of Sn particle incorporation on the photocatalytic activity of sprayed ZnO−SnO2 nanocomposites [PDF]

open access: yesScientific Reports
This paper investigates the photocatalytic performance of ZnO−SnO2 nanocomposites deposited using the Spray Pyrolysis technique, with varying percentages of tin oxide (20, 60, and 80%) on glass substrates at 350 °C.
S. Mahjoubi   +4 more
doaj   +2 more sources

Architecture of symmetrical bifacial perovskite/Si/perovskite PV modules and LCOE comparison in bifacial applications

open access: yesEPJ Photovoltaics, 2023
Perovskite on silicon tandem technologies offer a promising way to overcome the efficiency limit of single-junction crystalline silicon modules and are therefore widely studied.
Martin Amaury   +4 more
doaj   +1 more source

Investigations on photovoltaic material absorptivity using hyperspectral photoluminescence excitation imaging

open access: yesEPJ Photovoltaics, 2023
Photoluminescence imaging has become a standard method to characterize solar cells. However, performing some quantitative analysis of this technique requires the assumption of uniform local absorptivity, which cannot be directly measured using ...
Legrand Marie   +4 more
doaj   +1 more source

Revealing of InP multi-layer stacks from KPFM measurements in the dark and under illumination

open access: yesEPJ Photovoltaics, 2022
Solar cells are complex devices, being constituted of many layers and interfaces. The study and the comprehension of the mechanisms that take place at the interfaces is crucial for efficiency improvement. This paper applies Kelvin probe force microscopy (
da Lisca Mattia   +6 more
doaj   +1 more source

Contactless defects detection using modulated photoluminescence technique: model for a single Shockley-Read-Hall trap in a semiconductor thin layer

open access: yesEPJ Photovoltaics
Studying defects in semiconductors is, in practice, a very important topic for opto-electronic applications. It involves advanced characterization tools able to quantify and qualify the defect densities present in the materials. In the present article we
Bérenguier Baptiste   +5 more
doaj   +1 more source

Combien coûte l’électricité produite par le photovoltaïque (PV) en Suisse ?: situation, analyse des coûts détaillée et comparaison avec l’Allemagne [PDF]

open access: yes, 2015
Le but de ce travail est d’évaluer la rentabilité et le potentiel des installations photovoltaïques afin de voir si cette technologie peut remplacer le nucléaire en Suisse.
Briguet, Alain, Monnet, David
core  

Analyse du processus de formation de la barrière or-silicium

open access: yes, 1978
Nous comparons les caractéristiques courant-tension sous éclairement de diodes Schottky or-silicium à des courbes théoriques de structures MIS. Nous montrons que l'évolution dans le temps de ces caractéristiques est due à la neutralisation d'une charge ...
Pananakakis, G.   +2 more
core   +4 more sources

Pilotage d'un système PV & PAC optimisant l'autoconsommation [PDF]

open access: yes, 2018
Développer un système de gestion autonome permettant d’optimiser l’autoconsommation. Le système pilote la pompe à chaleur ainsi que le boiler en fonction des différents besoins thermiques et de la production ...
Maillat, Rémi, Morand, Gilbert
core  

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