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Electron-Transfer Kinetics through Interfaces between Electron-Transport and Ion-Transport Layers in Solid-State Dye-Sensitized Solar Cells Utilizing Solid Polymer Electrolyte

Title
Electron-Transfer Kinetics through Interfaces between Electron-Transport and Ion-Transport Layers in Solid-State Dye-Sensitized Solar Cells Utilizing Solid Polymer Electrolyte
Author
강용수
Keywords
OPEN-CIRCUIT VOLTAGE; PHOTOVOLTAIC PERFORMANCE; CHARGE RECOMBINATION; PHOTOELECTROCHEMICAL CELLS; REDOX ELECTROLYTES; EFFICIENCY; REGENERATION; COLLECTION
Issue Date
2016-01
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v. 120, NO 5, Page. 2494-2500
Abstract
The origin of the differences between the performance parameters found for dye-sensitized solar cells (DSCs) using liquid and poly(ethylene oxide)-based solid polymer electrolytes has been investigated. Limitations associated with poor polymer electrolyte penetration and ionic diffusion have been analyzed together with other effects such as the dye regeneration rate, the conduction band edge shift, and the electron recombination kinetics occurring in the solid polymer electrolyte. We have found that dye regeneration was faster for sensitized TiO2 films fully wetted with polymer electrolyte than that with liquid cells. This new result was attributed to a 0.2 eV decrease in the dye highest occupied molecular orbital energy yielding to an increase in the driving force for dye regeneration. These understandings may contribute to a further increase in the energy-conversion efficiency of DSCs employing solid polymer electrolyte.
URI
http://pubs.acs.org/doi/10.1021/acs.jpcc.5b09259http://hdl.handle.net/20.500.11754/30554
ISSN
1932-7447
DOI
10.1021/acs.jpcc.5b09259
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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