Photon recycling in lead iodide perovskite solar cells

Détails

Ressource 1Télécharger: Pazos-Science-2016-AAM.pdf (928.84 [Ko])
Etat: Public
Version: Author's accepted manuscript
ID Serval
serval:BIB_6EA4FC102991
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Photon recycling in lead iodide perovskite solar cells
Périodique
Science
Auteur⸱e⸱s
Pazos-Outon L. M., Szumilo M., Lamboll R., Richter J. M., Crespo-Quesada M., Abdi-Jalebi M., Beeson H. J., Vru ini M., Alsari M., Snaith H. J., Ehrler B., Friend R. H., Deschler F.
ISSN
0036-8075
1095-9203
Statut éditorial
Publié
Date de publication
25/03/2016
Peer-reviewed
Oui
Volume
351
Numéro
6280
Pages
1430-1433
Langue
anglais
Résumé
Lead-halide perovskites have emerged as high-performance photovoltaic materials. We mapped the propagation of photogenerated luminescence and charges from a local photoexcitation spot in thin films of lead tri-iodide perovskites. We observed light emission at distances of ≥50 micrometers and found that the peak of the internal photon spectrum red-shifts from 765 to ≥800 nanometers. We used a lateral-contact solar cell with selective electron- and hole-collecting contacts and observed that charge extraction for photoexcitation >50 micrometers away from the contacts arose from repeated recycling between photons and electron-hole pairs. Thus, energy transport is not limited by diffusive charge transport but can occur over long distances through multiple absorption-diffusion-emission events. This process creates high excitation densities within the perovskite layer and allows high open-circuit voltages.
Mots-clé
Photon recycling, lead-halide perovskites, long-range energy transfer, back- contact solar cell
Pubmed
Web of science
Création de la notice
12/12/2017 14:49
Dernière modification de la notice
20/08/2019 14:27
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