| DOI | Trouver le DOI : https://doi.org/10.1557/opl.2013.584 |
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| Auteur | Rechercher : Mohammadpour, A.; Rechercher : Farsinezhad, S.; Rechercher : Hsieh, L.-H.; Rechercher : Shankar, K.1 |
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| Affiliation | - Conseil national de recherches du Canada. Institut national de nanotechnologie
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| Format | Texte, Article |
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| Conférence | 2013 MRS Spring Meeting, 1 April 2013 through 5 April 2013, San Francisco, CA |
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| Résumé | Our ability to fabricate multipodal and multilayer TiO2 nanotube arrays enables us to increase performance and functionality in light harvesting devices such as excitonic solar cells and photocatalysts. Using a combination of simulations and experiments, we show that multilayer nanotube arrays enable photon management in the active toward enhancing the absorption and utilization of incident light. We show that the simultaneous utilization of TiO2 nanotubes with large (∼450 nm) and small (∼80 nm) diameters in stacked multilayer films increased light absorption and photocurrent in solar cells. Such enhanced light absorption is particularly desirable in the near-infrared region of the solar spectrum in which most excitonic solar cells suffer from poor quantum efficiencies and for blue photons at the TiO2 band-edge where significant room exists for improvement of photocatalytic quantum yields. Under AM 1.5 one sun illumination, multilayer nanotube arrays afforded us an approximately 20% improvement in photocurrent over single layer nanotube array films of the same thickness for N-719 sensitized liquid junction solar cells. Also, the possibility of multipodal TiO2 nanotube growth with different electrolyte recipes is presented. © 2013 Materials Research Society. |
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| Date de publication | 2013 |
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| Série | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21270907 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 1c1d287a-20a1-4177-bebf-5f2bf2cf3b65 |
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| Enregistrement créé | 2014-02-18 |
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| Enregistrement modifié | 2020-04-22 |
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