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High-performance nanotube-enhanced perovskite photodetectors

Ka, Ibrahima et Gerlein, Luis Felipe et Nechache, Riad et Cloutier, Sylvain G.. 2017. « High-performance nanotube-enhanced perovskite photodetectors ». Scientific Reports, vol. 7.

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Résumé

Organic-inorganic perovskites have already shown a tremendous potential for low-cost light-harvesting devices. Yet, the relatively low carrier mobilities in bulk perovskites still prevent large-area devices with performances competing with state-of-the-art technologies. Here, we tackle this fundamental challenge by incorporating single-wall carbon nanotubes within a perovskite matrix by means of a simple two-step method in ambient air. Using this nano-engineered hybrid film, we demonstrate large-area photodetectors with responsivities up-to 13.8 A.W−1 and a broad spectral response from 300 to 800 nm, indicating that photocurrent generation arises from the charge transfer from the perovskite matrix to the embedded nanotube network. As the nanotubes facilitate the carrier extraction, these photodetectors also show a fast response time of 10 ms. This is significantly faster than most of previous reports on perovskite-based photodetectors, including devices with much smaller photosensitive areas. This approach is also well-suited for large-scale production of other perovskite-based light-harvesting devices.

Type de document: Article publié dans une revue, révisé par les pairs
Informations complémentaires: Identifiant de l'article: 45543
Mots-clés libres: Fonds d'auteur ÉTS, FAETS
Professeur:
Professeur
Cloutier, Sylvain G.
Affiliation: Génie électrique
Date de dépôt: 03 avr. 2017 18:08
Dernière modification: 05 avr. 2017 14:38
URI: http://espace2.etsmtl.ca/id/eprint/14930

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