Screen Printing, Modification via Post-treatment and Application in Dye-sensitized Solar Cells of PEDOT:PSS Films

doi:10.11777/j.issn1000-3304.2018.18169

	Screen Printing, Modification via Post-treatment and Application in Dye-sensitized Solar Cells of PEDOT:PSS Films
	Xu, Di; Shen, Hu-jiang; Xie, Jun-jie; Wang, Wei; Yuan, Hui-hui; Li, Yu-yu; Zhang, Tao; Chen, Xin-yu; He, Yon-long; Zhang, Yu-mei
刊名	ACTA POLYMERICA SINICA
	2019
卷号	50 期号:1 页码:36
关键词	Poly(3,4-ethylenedioxythiophene) Post-treatment Electrode material Dye-sensitized solar cell
ISSN号	1000-3304
DOI	10.11777/j.issn1000-3304.2018.18169
文献子类	Article
英文摘要	Poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) films were coated on fluorine-doped tin oxide (FTO) conductive glass substrates via facile screen printing, followed by a modification. The modification was realized through post-treatment, i.e., immersing the as-printed films into a mixed solution consisting of diluted H2SO4 and methanol, and baking at 120 degrees C after 10 min of dipping. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) were used to investigate the surface morphology and the thickness changes of the films before and after treating. Electrical conductivity of the pristine and that of the treated films were calculated and compared, using sheet resistance and thickness, and the result was discussed based on X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analysis. Finally, PEDOT:PSS films were used as counter electrodes of dye-sensitized solar cells (DSSCs). The catalytic activity of the PEDOT:PSS films toward I-3(-) reduction reaction was characterized by electrochemical impedance spectroscopy (EIS), and the photovoltaic performance of DSSCs assembled by the films was evaluated under the irradiation of simulated AM 1.5G condition. The results demonstrate that, the amorphous PEDOT:PSS films are uniformly coated on FTO substrates after screen printing, and the surface morphology of PEDOT:PSS experiences significant change after the modification by post-treatment, with significantly decreased thickness and slightly increased roughness. The electrical conductivity has been enhanced to more than three times of that in the pristine film, due to the partial removal of PSS rather than the improvement of crystallinity. The catalytic activity toward I-3(-) reduction reaction is greatly enhanced, and the photovoltaic performance of the DSSCs assembled is also obviously improved, with the photo conversion efficiency increases from 5.12% to 6.64%. The increased PEDOT/PSS mass ratio, electrical conductivity and roughness of the PEDOT:PSS films after post-treatment is believed to be responsible for the improvedment of the photovoltaic performance of the DSSCs.
WOS研究方向	Polymer Science
语种	中文
出版者	SCIENCE PRESS
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27413]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Xu, Di,Shen, Hu-jiang,Xie, Jun-jie,et al. Screen Printing, Modification via Post-treatment and Application in Dye-sensitized Solar Cells of PEDOT:PSS Films[J]. ACTA POLYMERICA SINICA,2019,50(1):36.
APA	Xu, Di.,Shen, Hu-jiang.,Xie, Jun-jie.,Wang, Wei.,Yuan, Hui-hui.,...&Zhang, Yu-mei.(2019).Screen Printing, Modification via Post-treatment and Application in Dye-sensitized Solar Cells of PEDOT:PSS Films.ACTA POLYMERICA SINICA,50(1),36.
MLA	Xu, Di,et al."Screen Printing, Modification via Post-treatment and Application in Dye-sensitized Solar Cells of PEDOT:PSS Films".ACTA POLYMERICA SINICA 50.1(2019):36.