Please use this identifier to cite or link to this item:
|Title:||An organic redox mediator for dye-sensitized solar cells with near unity quantum efficiency||Authors:||Liu, Y.
|Issue Date:||Feb-2011||Citation:||Liu, Y., Jennings, J.R., Parameswaran, M., Wang, Q. (2011-02). An organic redox mediator for dye-sensitized solar cells with near unity quantum efficiency. Energy and Environmental Science 4 (2) : 564-571. ScholarBank@NUS Repository. https://doi.org/10.1039/c0ee00519c||Abstract:||The organic redox mediator tetramethylformaminium disulfide/ tetramethylthiourea was evaluated in dye-sensitized nanocrystalline TiO 2 solar cells, as an alternative to the conventional I 3 -/I- redox couple. Devices were optimized by judicious variation of electrolyte composition and selection of sensitizing dye. The best performance of the dye-sensitized solar cells incorporating this redox mediator was achieved by using a metal-free indoline-based sensitizer (D131). It was found that conventional ruthenium based sensitizers (e.g. Z907) exhibited inferior performance, possibly as a result of an insufficient driving force for sensitizer regeneration. A near unity incident photon-to-collected-electron conversion efficiency was achieved at low light intensity for optimized devices. The overall light-to-electric power conversion efficiency under AM 1.5 1 Sun illumination reached 3.88%. This represents an increase of ca. 25% compared with previously reported DSCs using this redox mediator. Factors limiting cell performance were further investigated using transient absorption spectroscopy and electrochemical impedance spectroscopy. © 2011 The Royal Society of Chemistry.||Source Title:||Energy and Environmental Science||URI:||http://scholarbank.nus.edu.sg/handle/10635/86188||ISSN:||17545692||DOI:||10.1039/c0ee00519c|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Apr 6, 2020
WEB OF SCIENCETM
checked on Mar 27, 2020
checked on Mar 29, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.