https://scholars.lib.ntu.edu.tw/handle/123456789/630143
標題: | Multifunctional conjugated molecules combined with electrospun CuCoP/carbon nanofibers as a modifier of the Pt counter electrode for dye-sensitized solar cells | 作者: | Lin, Fang Sian Sakthivel, Mani Fan, Miao Syuan Wu, Chien Hsin Fong, Guan Lun JIANG-JEN LIN RU-JONG JENG KUO-CHUAN HO |
關鍵字: | HYDROGEN EVOLUTION REACTION; ORGANIC IONIC CONDUCTORS; POROUS TIO2 NANOFIBERS; HIGH-PERFORMANCE; COBALT PHOSPHIDE; ELECTROCHEMICAL PROPERTIES; EFFICIENT ELECTROCATALYST; POLYMER ELECTROLYTE; CARBON NANOTUBES; LOW-COST | 公開日期: | 21-七月-2022 | 出版社: | ROYAL SOC CHEMISTRY | 卷: | 10 | 期: | 34 | 起(迄)頁: | 12232 | 來源出版物: | Journal of Materials Chemistry C | 摘要: | Star-shaped 3,6-bis(5-(4,4′-bis(3-azidopropyl)-[1,1′:3′,1′-terphenyl]-5′-yl)-thien-2-yl)-2,5-bis(2-ethylhexyl)pyrrolo[3,4-c]pyrrole-1,4(2H,5H)-dione (DPPTPTA) is combined with electrospun bimetallic copper-cobalt phosphide decorated on carbon nanofibers (CuCoP/CNF) and used as a modified layer (DPPTPTA@CuCoP/CNF) on the platinum (Pt) coated counter electrode (CE) of dye-sensitized solar cells (DSSCs). DPPTPTA possesses ladder-like energy levels for efficient charge separation while CuCoP/CNF exhibits high electrocatalytic activity and sufficient electrical conductivity. Overall, the DPPTPTA@CuCoP/CNF heterostructure exhibits attractive performance needed for CE of DSSCs. From electrochemical analysis, it is observed that the DPPTPTA@CuCoP/CNF modified layer ensures efficient charge transfer at the CE/electrolyte interface with low charge transfer resistance. Moreover, the CE/electrolyte interface possesses a small electron recombination rate, since the modified layer has good charge separation ability. Under 1 sun (AM 1.5G, 100 mW cm−2) conditions, the proposed DSSC achieved a photoelectric conversion efficiency (η) of 9.50%, an open-circuit voltage (VOC) of 827 mV, a short-circuit current density (JSC) of 16.25 mA cm−2, and a fill factor (FF) of 0.71. Under indoor conditions, the η value at 6000 lux (1.89 mW cm−2) reached 25.44%. Finally, the porous three-dimensional nanofiber structure of modified layer can ensure the long-term stability (90% retention after 3000 h). Thus, the DPPTPTA@CuCoP/CNF modified layer-based DSSC can be considered as a promising device for possible renewable energy applications. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/630143 | ISSN: | 2050-7526 | DOI: | 10.1039/d2tc01564a |
顯示於: | 化學工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。