Citation: Liu Lin, Yu Xiang-Mei, Zhang Bao, Meng Shu-Xian, Feng Ya-Qing. Synthesis of nano-TiO₂ assisted by diethylene glycol for use in high efficiency dye-sensitized solar cells[J]. Chinese Chemical Letters, ;2017, 28(4): 765-770. doi: 10.1016/j.cclet.2017.03.011 shu

Synthesis of nano-TiO₂ assisted by diethylene glycol for use in high efficiency dye-sensitized solar cells

Liu Lin ^a,b ,
Yu Xiang-Mei ^a ,
Zhang Bao ^a,, ,
Meng Shu-Xian ^a ,
Feng Ya-Qing ^a,b,,

a.
School of Chemical Engineer and Technology, Tianjin University, Tianjin 300072, China
b.
Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China

Corresponding author: Zhang Bao, baozhang@tju.edu.cn Feng Ya-Qing, yqfeng@tju.edu.cn
Received Date: 28 November 2016
Revised Date: 19 January 2017
Accepted Date: 8 March 2017
Available Online: 10 April 2017

Figures(7)

The performance of dye-sensitized solar cells(DSSCs)consisting of anatase TiO₂ nanoparticles that were synthesized via a hydrothermal method was studied.The synthesized TiO₂ nanoparticles were characterized by X-ray diffraction(XRD), nitrogen sorption analysis, scanning electron microscopy(SEM), high resolution transmission electron microscopy(HRTEM), and UV-vis spectroscopy.Then the J-V curve, electrochemical impedance spectroscopy(EIS), and open-circuit voltage decay(OCVD)measurement were applied to evaluate the photovoltaic performance of DSSCs.Compared with the commercial TiO₂ nanoparticles(P25), the synthesized-TiO₂ nanoparticles showed better performance.By adding diethylene glycol(DEG)before the hydrothermal process, the synthesized TiO₂ nanoparticles(hereafter referred to as TiO₂-DEG particles)shows narrower size distribution, larger specific surface area, higher crystallinity, and less surface defects than TiO₂(DEG free)particles.The analysis of photovoltaic properties of DSSCs based on TiO₂-DEG particles showed that the recombination of electron-hole pairs was decreased and the trapping of carries in grain boundaries restrained.It was believed that the photoelectrode fabricated with the as-prepared TiO₂ nanoparticles improved the loading amount of dye sensitizers(N719), and enhanced the photocurrent of the DSSCs.As a result, the TiO₂-DEG particle based cells achieved a photo-to-electricity conversion efficiency(η)of 7.90%, which is higher than 7.53% for the cell based on TiO₂(DEG free)and 6.59% for the one fabricated with P25.
- Hydrothermal,
- TiO₂,
- Diethylene glycol,
- Photoelectrode,
- Dye-sensitized solar cells
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沈阳化工大学材料科学与工程学院沈阳 110142

Synthesis of nano-TiO2 assisted by diethylene glycol for use in high efficiency dye-sensitized solar cells

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通讯作者: 陈斌, bchen63@163.com

Synthesis of nano-TiO₂ assisted by diethylene glycol for use in high efficiency dye-sensitized solar cells