https://scholars.lib.ntu.edu.tw/handle/123456789/576755
Title: | A novel multifunctional polymer ionic liquid as an additive in iodide electrolyte combined with silver mirror coating counter electrodes for quasi-solid-state dye-sensitized solar cells | Authors: | Lin F.-S Sakthivel M Fan M.-S JIANG-JEN LIN RU-JONG JENG KUO-CHUAN HO |
Keywords: | Additives; Electrodes; Electrolytes; Glass; Ionic liquids; Mirrors; Open circuit voltage; Photoelectricity; Plastic coatings; Polyethylene oxides; Polymer solar cells; Reaction kinetics; Redox reactions; Silver; Surface diffusion; Apparent diffusion coefficient; Counter electrodes; Electron self-exchange; Indoor conditions; Long term stability; Multifunctional polymer; Photo-electric conversion efficiency; Quasi-Solid-State dye-sensitized solar cells; Dye-sensitized solar cells | Issue Date: | 2021 | Journal Volume: | 9 | Journal Issue: | 8 | Start page/Pages: | 4907-4921 | Source: | Journal of Materials Chemistry A | Abstract: | A novel multifunctional polymer ionic liquid poly(oxyethylene)-imide-2,2,6,6-tetramethyl-1-piperidinyloxy (POEI-TEMPO) was successfully prepared and used as an additive in iodide electrolyte in quasi-solid-state dye-sensitized solar cells (QSS-DSSCs). The POEI segment in the electrolyte has good mechanical strength; meanwhile, the TEMPO organic radical contains nitroxide as the redox couple (RN-O˙/RNO+) acting as a superior mediator in DSSCs. TEMPO has a number of favorable properties, such as fast and reversible redox kinetics, large apparent diffusion coefficient (Dapp), positive redox potential, and facile electron self-exchange reaction. As a result, DSSCs were composed of aPOEI-TEMPO/iodide electrolyte and a Pt-coated FTO layer on glass as a normal counter electrode (PtCE), whereas the other side of the glass was coated with silver mirror coating (SMC) as the bifacial PtCE/SMC cell. DSSC exhibited a maximum photoelectric conversion efficiency (η) of 9.83%, open-circuit voltage (VOC) of 812.84 mV, and short-circuit current density (JSC) of 16.60 mA cm?2under 1 sun (AM 1.5 G, 100 mW cm?2), whereas the value ofηreached 25.99% under an indoor condition with 6000 lux (1.89 mW cm?2). Moreover, whenPOEI-TEMPOis used as an additive, the bifacial cell maintains its high performance with a reasonable long-term stability. The finding is expected to have a practical impact on harvesting the ambient light energy and extending the cell lifetime. ? The Royal Society of Chemistry 2021. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85101984575&doi=10.1039%2fd0ta10826j&partnerID=40&md5=016f8b1c274421a718654dfb5bd202fb https://scholars.lib.ntu.edu.tw/handle/123456789/576755 |
ISSN: | 20507488 | DOI: | 10.1039/d0ta10826j |
Appears in Collections: | 化學工程學系 |
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