Chen, Y.-Y.Y.-Y.ChenYeh, M.-H.M.-H.YehChung, T.-F.T.-F.ChungJER-REN YANGJIAN-ZHANG CHENI-CHUN CHENGJERRY CHENG-CHE HSUKUO-CHUAN HOTsai, Shao-PuShao-PuTsai2021-02-042021-02-042020https://www.scopus.com/inward/record.url?eid=2-s2.0-85077167952&partnerID=40&md5=4ee0cf39d78959a1a4d30885b5bcc024https://scholars.lib.ntu.edu.tw/handle/123456789/546708A nitrogen DC-pulse atmosphere pressure plasma jet (APPJ) is used to convert ferric nitrate (Fe(NO3)3) and chloroplatinic acid (H2PtCl6) mixed liquid precursor films into PtFe nanocompounds on a fluorine-doped tin oxide (FTO) substrate. Scanning transmission electron microscopy indicates nanoparticles distributed on a thin continuous layer on the FTO substrate. The APPJ-synthesized PtFe nanocompounds contain a mixture of crystalline and amorphous phases. X-ray photoelectron spectroscopy shows that most Pt is in the metallic phase and most Fe, in the oxidized phase. A dye-sensitized solar cell (DSSC) with only 5-s APPJ-processed PtFe counter electrode (CE) shows significantly improved efficiency. This suggests the rapid processing capability of the nitrogen DC-pulse APPJ. A PtFe prepared with higher H2PtCl6/Fe(NO3)3 volume ratio shows better catalytic performance, as confirmed by cyclic voltammetry, electrochemical impedance spectroscopy, and Tafel experiments. The DSSC with APPJ-processed PtFe CE shows comparable efficiency to that of 15-min furnace-calcined Pt CE, suggesting that the APPJ processed PtFe requires less Pt. © The Author(s) 2019. Published by ECS.[SDGs]SDG7Atmospheric pressure; Binary alloys; Chlorine compounds; Cyclic voltammetry; Dye-sensitized solar cells; Efficiency; Electrochemical impedance spectroscopy; High resolution transmission electron microscopy; Nanocomposites; Nitrogen; Nitrogen plasma; Oxide films; Plasma jets; Scanning electron microscopy; Tin oxides; X ray photoelectron spectroscopy; Atmosphere pressure; Atmospheric pressure plasma jets; Catalytic performance; Chloroplatinic acid; Counter electrodes; Fluorine doped tin oxide; Microstructural investigation; Scanning transmission electron microscopy; Platinumjournal article10.1149/2.0042005JES2-s2.0-85077167952