The Synthesis of Nb-doped TiO2 Nanoparticles for Improved-Performance Dye Sensitized Solar Cells

Haijun Su; Yu-Ting Huang; Ya-Huei Chang; Peng Zhai; Nga Yu Hau; Peter Chun Hin Cheung; Wei-Ting Yeh; Tzu-Chien Wei; Shien-Ping Feng

doi:10.1016/j.electacta.2015.09.072

Author(s)

Haijun Su
Yu-Ting Huang
Ya-Huei Chang
Peng Zhai
Nga Yu Hau
Peter Chun Hin Cheung
Wei-Ting Yeh
Tzu-Chien Wei

Detail(s)

Original language	English
Pages (from-to)	230-237
Journal / Publication	Electrochimica Acta
Volume	182
Publication status	Published - 10 Nov 2015
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1016/j.electacta.2015.09.072 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-84942780245&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(abbf7a76-3aab-4d77-b373-a11fa25f6754).html

Abstract

The current co-hydrolysis used for the preparation of Nb-doped TiO₂ starts from expensive and unstable niobium-based precursors, which is not suitable for mass production. In this paper, a scalable synthesis of Nb-doped TiO₂ nanoparticles (NPs) made by mixing TiO₂ paste with functionalized Nb₂O₅ sol gel is developed for the photoanodes in dye-sensitized solar cells (DSSCs). By doping Nb into TiO₂, the positive shift of conduction band minimum (CBM) enhances the electron injection and the improved electron conductivity facilitates the electron transport, leading to an improved J_sc. In addition, the Nb-doping suppresses the surface recombination at TiO₂-electrolyte interface, resulting in the increase of V_oc. Therefore, the DSSCs based on 2.0 mol% Nb-doped TiO₂ photoanodes improve both J_sc and V_oc to achieve 18.9% improvement of photoconversion efficiency as compared with the standard DSSCs. The DSSCs with Nb-doped TiO₂ photoanode is also shown an improved long-term stability.

Research Area(s)

Dye sensitized solar cells, Niobium doping, Photovoltaics, Titanium dioxide nanoparticles

SDG 7 - Affordable and Clean Energy

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Citation Format(s)

[ RIS ] [ BibTeX ]

The Synthesis of Nb-doped TiO₂ Nanoparticles for Improved-Performance Dye Sensitized Solar Cells. / Su, Haijun; Huang, Yu-Ting; Chang, Ya-Huei et al.
In: Electrochimica Acta, Vol. 182, 10.11.2015, p. 230-237.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Su, H, Huang, Y-T, Chang, Y-H, Zhai, P, Hau, NY, Cheung, PCH, Yeh, W-T, Wei, T-C & Feng, S-P 2015, 'The Synthesis of Nb-doped TiO₂ Nanoparticles for Improved-Performance Dye Sensitized Solar Cells', Electrochimica Acta, vol. 182, pp. 230-237. https://doi.org/10.1016/j.electacta.2015.09.072

Su, H., Huang, Y.-T., Chang, Y.-H., Zhai, P., Hau, N. Y., Cheung, P. C. H., Yeh, W.-T., Wei, T.-C., & Feng, S.-P. (2015). The Synthesis of Nb-doped TiO₂ Nanoparticles for Improved-Performance Dye Sensitized Solar Cells. Electrochimica Acta, 182, 230-237. https://doi.org/10.1016/j.electacta.2015.09.072

Su H, Huang YT, Chang YH, Zhai P, Hau NY, Cheung PCH et al. The Synthesis of Nb-doped TiO₂ Nanoparticles for Improved-Performance Dye Sensitized Solar Cells. Electrochimica Acta. 2015 Nov 10;182:230-237. doi: 10.1016/j.electacta.2015.09.072

Su, Haijun ; Huang, Yu-Ting ; Chang, Ya-Huei et al. / The Synthesis of Nb-doped TiO₂ Nanoparticles for Improved-Performance Dye Sensitized Solar Cells. In: Electrochimica Acta. 2015 ; Vol. 182. pp. 230-237.