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Published in: Journal of Materials Science: Materials in Electronics 15/2019

02-07-2019

Facile non-pressurized synthesis of nanowire-constructed hierarchical TiO2 nanomaterials with improved dye sensitized solar cell performance

Authors: Yinghao Lv, Rui Zan, Xiaogang Wen

Published in: Journal of Materials Science: Materials in Electronics | Issue 15/2019

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Abstract

Nanowire-constructed hierarchical TiO2 nanomaterials (HTN) are prepared by a facile non-hydrothermal method at atmospheric pressure. The product is characterized in detail using powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy and UV–Vis spectrophotometer. The synthesized TiO2 hierarchical nanomaterials consist of nanowires of 15 nm in diameter, it possesses a high surface area of 144.65 m2/g, and demonstrate an excellent dye absorption ability (155.55 nmol/cm2), which is 2.7 times more than that of the Degussa P25. Corresponding photovoltaic performance of dye-sensitized solar cells (DSSCs) fabricated from HTN is also investigated. It exhibits an overall light-to-electricity conversion efficiency of 8.9% accompanying a short-circuit current density of 20.43 mA/cm2, an open-circuit voltage of 720 mV and fill factor of 0.61, which is much higher than that of P25 (5.5%). The significant enhancement of short-circuit current density and power conversion efficiency of HTN can be attributed to its larger dye loading amount, better charge transportation ability and excellent light scattering ability.

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Appendix
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Metadata
Title
Facile non-pressurized synthesis of nanowire-constructed hierarchical TiO2 nanomaterials with improved dye sensitized solar cell performance
Authors
Yinghao Lv
Rui Zan
Xiaogang Wen
Publication date
02-07-2019
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 15/2019
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-019-01788-x

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