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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
2019
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Volume50Issue:1Pages:36
SubtypeArticle
AbstractPoly(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.
KeywordPoly(3,4-ethylenedioxythiophene) Post-treatment Electrode material Dye-sensitized solar cell
DOI10.11777/j.issn1000-3304.2018.18169
Language中文
WOS Research AreaPolymer Science
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27413
Collection中国科学院上海硅酸盐研究所
Recommended Citation
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.
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