Open-ended TiO 2 nanotubes formed by two-step anodization and their application in dye-sensitized solar cells

Cho Tung Yip; Min Guo; Haitao Huang; Limin Zhou; Yu Wang; Chuanjun Huang

doi:10.1039/c2nr11317a

Open-ended TiO ₂ nanotubes formed by two-step anodization and their application in dye-sensitized solar cells

Cho Tung Yip, Min Guo, Haitao Huang, Limin Zhou, Yu Wang, Chuanjun Huang

Hong Kong Polytechnic University

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

We demonstrate a simple method to fabricate open-ended TiO ₂ nanotube (NT) based dye-sensitized solar cells (DSSCs), where the NTs are attached to either TiO ₂ nanorods (NRs) grown on fluorine-doped tin oxide (FTO) or FTO directly by nanoparticles (NPs). A completely hole-through TiO ₂ NT layer is fabricated via a two-step anodization with heat treatment immediately after the first anodization. DSSCs with the open-ended NTs show better photovoltaic performance than those with close-ended NTs, due to the enhanced charge transport in the open-ended structure. Under optimum conditions, DSSCs fabricated with the open-ended NT layer exhibit a short circuit current density (J _sc) of 19.10 mA cm ^-2, an open circuit voltage (V _oc) of 0.68 V, a fill factor (FF) of 0.49, and a power conversion efficiency (eff) of 6.3%.

Original language	English
Pages (from-to)	448-450
Number of pages	3
Journal	Nanoscale
Volume	4
Issue number	2
DOIs	https://doi.org/10.1039/c2nr11317a
State	Published - 21 Jan 2012
Externally published	Yes

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title = "Open-ended TiO 2 nanotubes formed by two-step anodization and their application in dye-sensitized solar cells",

abstract = "We demonstrate a simple method to fabricate open-ended TiO 2 nanotube (NT) based dye-sensitized solar cells (DSSCs), where the NTs are attached to either TiO 2 nanorods (NRs) grown on fluorine-doped tin oxide (FTO) or FTO directly by nanoparticles (NPs). A completely hole-through TiO 2 NT layer is fabricated via a two-step anodization with heat treatment immediately after the first anodization. DSSCs with the open-ended NTs show better photovoltaic performance than those with close-ended NTs, due to the enhanced charge transport in the open-ended structure. Under optimum conditions, DSSCs fabricated with the open-ended NT layer exhibit a short circuit current density (J sc) of 19.10 mA cm -2, an open circuit voltage (V oc) of 0.68 V, a fill factor (FF) of 0.49, and a power conversion efficiency (eff) of 6.3%.",

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AU - Yip, Cho Tung

AU - Guo, Min

AU - Huang, Haitao

AU - Zhou, Limin

AU - Wang, Yu

AU - Huang, Chuanjun

PY - 2012/1/21

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N2 - We demonstrate a simple method to fabricate open-ended TiO 2 nanotube (NT) based dye-sensitized solar cells (DSSCs), where the NTs are attached to either TiO 2 nanorods (NRs) grown on fluorine-doped tin oxide (FTO) or FTO directly by nanoparticles (NPs). A completely hole-through TiO 2 NT layer is fabricated via a two-step anodization with heat treatment immediately after the first anodization. DSSCs with the open-ended NTs show better photovoltaic performance than those with close-ended NTs, due to the enhanced charge transport in the open-ended structure. Under optimum conditions, DSSCs fabricated with the open-ended NT layer exhibit a short circuit current density (J sc) of 19.10 mA cm -2, an open circuit voltage (V oc) of 0.68 V, a fill factor (FF) of 0.49, and a power conversion efficiency (eff) of 6.3%.

AB - We demonstrate a simple method to fabricate open-ended TiO 2 nanotube (NT) based dye-sensitized solar cells (DSSCs), where the NTs are attached to either TiO 2 nanorods (NRs) grown on fluorine-doped tin oxide (FTO) or FTO directly by nanoparticles (NPs). A completely hole-through TiO 2 NT layer is fabricated via a two-step anodization with heat treatment immediately after the first anodization. DSSCs with the open-ended NTs show better photovoltaic performance than those with close-ended NTs, due to the enhanced charge transport in the open-ended structure. Under optimum conditions, DSSCs fabricated with the open-ended NT layer exhibit a short circuit current density (J sc) of 19.10 mA cm -2, an open circuit voltage (V oc) of 0.68 V, a fill factor (FF) of 0.49, and a power conversion efficiency (eff) of 6.3%.

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Open-ended TiO ₂ nanotubes formed by two-step anodization and their application in dye-sensitized solar cells

Abstract

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