Engineering the intermediate band states in amorphous Ti3+-doped TiO2 for hybrid dye-sensitized solar cell applications

Shusheng Pan; Xiaolin Liu; Min Guo; Siu Fung Yu; Haitao Huang; Hongtao Fan; Guanghai Li

doi:10.1039/c5ta00956a

Engineering the intermediate band states in amorphous Ti³⁺-doped TiO₂ for hybrid dye-sensitized solar cell applications

Shusheng Pan, Xiaolin Liu, Min Guo, Siu Fung Yu, Haitao Huang, Hongtao Fan, Guanghai Li

Research output: Journal article publication › Journal article › Academic research › peer-review

69 Citations (Scopus)

Abstract

Ti³⁺-doped amorphous TiO₂ nanoparticles (a-TiO₂:Ti³⁺), which are an intermediate band semiconductor, were fabricated by high intensity ultraviolet pulsed laser ablation in water. The absorption band of a-TiO₂:Ti³⁺ nanoparticles, which appears between the visible and infrared regions, is much wider than that of the rutile TiO₂ nanoparticles. The intermediate band, which has a recombination lifetime of 0.71 μs, is found to be 1.61 eV above the valence band (VB) top of TiO₂. It can be shown that the a-TiO₂:Ti³⁺/TiO₂ nanotube hybrid dye-sensitized solar cells (DSSCs) not only have a high fill factor and large open circuit voltage, but also have high photovoltaic conversion efficiency as compared to TiO₂ nanotube DSSCs. Considering that most of the current solar cells use only a single photoelectric conversion material (PCM), our results will promote the research on multi-PCM hybrid solar cells.

Original language	English
Pages (from-to)	11437-11443
Number of pages	7
Journal	Journal of Materials Chemistry A
Volume	3
Issue number	21
DOIs	https://doi.org/10.1039/c5ta00956a
Publication status	Published - 7 Jun 2015

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

More information

10.1039/c5ta00956a

Cite this

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title = "Engineering the intermediate band states in amorphous Ti3+-doped TiO2 for hybrid dye-sensitized solar cell applications",

abstract = "Ti3+-doped amorphous TiO2 nanoparticles (a-TiO2:Ti3+), which are an intermediate band semiconductor, were fabricated by high intensity ultraviolet pulsed laser ablation in water. The absorption band of a-TiO2:Ti3+ nanoparticles, which appears between the visible and infrared regions, is much wider than that of the rutile TiO2 nanoparticles. The intermediate band, which has a recombination lifetime of 0.71 μs, is found to be 1.61 eV above the valence band (VB) top of TiO2. It can be shown that the a-TiO2:Ti3+/TiO2 nanotube hybrid dye-sensitized solar cells (DSSCs) not only have a high fill factor and large open circuit voltage, but also have high photovoltaic conversion efficiency as compared to TiO2 nanotube DSSCs. Considering that most of the current solar cells use only a single photoelectric conversion material (PCM), our results will promote the research on multi-PCM hybrid solar cells.",

author = "Shusheng Pan and Xiaolin Liu and Min Guo and Yu, {Siu Fung} and Haitao Huang and Hongtao Fan and Guanghai Li",

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T1 - Engineering the intermediate band states in amorphous Ti3+-doped TiO2 for hybrid dye-sensitized solar cell applications

AU - Pan, Shusheng

AU - Liu, Xiaolin

AU - Guo, Min

AU - Yu, Siu Fung

AU - Huang, Haitao

AU - Fan, Hongtao

AU - Li, Guanghai

PY - 2015/6/7

Y1 - 2015/6/7

N2 - Ti3+-doped amorphous TiO2 nanoparticles (a-TiO2:Ti3+), which are an intermediate band semiconductor, were fabricated by high intensity ultraviolet pulsed laser ablation in water. The absorption band of a-TiO2:Ti3+ nanoparticles, which appears between the visible and infrared regions, is much wider than that of the rutile TiO2 nanoparticles. The intermediate band, which has a recombination lifetime of 0.71 μs, is found to be 1.61 eV above the valence band (VB) top of TiO2. It can be shown that the a-TiO2:Ti3+/TiO2 nanotube hybrid dye-sensitized solar cells (DSSCs) not only have a high fill factor and large open circuit voltage, but also have high photovoltaic conversion efficiency as compared to TiO2 nanotube DSSCs. Considering that most of the current solar cells use only a single photoelectric conversion material (PCM), our results will promote the research on multi-PCM hybrid solar cells.

AB - Ti3+-doped amorphous TiO2 nanoparticles (a-TiO2:Ti3+), which are an intermediate band semiconductor, were fabricated by high intensity ultraviolet pulsed laser ablation in water. The absorption band of a-TiO2:Ti3+ nanoparticles, which appears between the visible and infrared regions, is much wider than that of the rutile TiO2 nanoparticles. The intermediate band, which has a recombination lifetime of 0.71 μs, is found to be 1.61 eV above the valence band (VB) top of TiO2. It can be shown that the a-TiO2:Ti3+/TiO2 nanotube hybrid dye-sensitized solar cells (DSSCs) not only have a high fill factor and large open circuit voltage, but also have high photovoltaic conversion efficiency as compared to TiO2 nanotube DSSCs. Considering that most of the current solar cells use only a single photoelectric conversion material (PCM), our results will promote the research on multi-PCM hybrid solar cells.

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