Kim, Jun Young Kim, Tae Ho Kim, Dong Young Park, Narn-Gyu Ahn, Kwang-Duk 2024-01-21T00:02:41Z 2024-01-21T00:02:41Z 2021-08-31 2008-01 0378-7753 https://pubs.kist.re.kr/handle/201004/133867 Novel thixotropic gel electrolytes have been successfully prepared by utilizing oligomeric poly(ethylene oxide) (PEO)-based bis-imidazolium diiodide salts and hydrophilic silica nanoparticles for application in quasi-solid-state dye-sensitized solar cells (DSSCs). The thixotropic gel-state of the ionic liquid-based composite electrolytes is confirmed by observing the typical hysteresis loop and temporary hydrogen bonding. On using the PEO-based composite electrolyte, a quasi-solid-state DSSC exhibited highly improved properties such as easy penetration of the electrolyte into the cell without leakage, long-term stability, high open-circuit voltage without the use of 4-tert-butylpyridine, and a high energy-conversion efficiency of 5.25% under AM 1.5 illumination (100 m W cm(-2)). (c) 2007 Elsevier B.V. All rights reserved. English ELSEVIER Novel thixotropic gel electrolytes based on dicationic bis-imidazolium salts for quasi-solid-state dye-sensitized solar cells Article 10.1016/j.jpowsour.2007.08.085 1 JOURNAL OF POWER SOURCES, v.175, no.1, pp.692 - 697 JOURNAL OF POWER SOURCES 175 1 692 697 N scie scopus 000252513100093 2-s2.0-36348961970 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article TEMPERATURE MOLTEN-SALTS LIQUIDS Energy-conversion efficiency Gel electrolyte Poly(ethylene oxide)-based bis-imidazolium salts Quasi-solid-state dye-sensitized solar cell Thixotropic gel