Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/75233
Title: High-performance dye-sensitized solar cells with various nanostructured materials as counter electrode
Authors: Mei, X.
Cho, S.J.
Sun, K.
Fan, B. 
Ouyang, J. 
Keywords: Carbon nanotubes
Counter electrode
Dye-sensitized solar cells
Nanoparticles
Platinum
Issue Date: 2010
Source: Mei, X.,Cho, S.J.,Sun, K.,Fan, B.,Ouyang, J. (2010). High-performance dye-sensitized solar cells with various nanostructured materials as counter electrode. Nanotechnology 2010: Bio Sensors, Instruments, Medical, Environment and Energy - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010 3 : 721-724. ScholarBank@NUS Repository.
Abstract: This paper reports high-performance dye-sensitized solar cells (DSCs) with two classes of nanostructured materials as counter electrode. The first one is nanostructured platinum (Pt) prepared by chemically reducing a Pt precursor with ethylene glycol (EG) at temperature below 200 d̀C. Two types of Pt structures, dense and porous Pt structures, were observed for the Pt deposited by EG reduction. The dense Pt structure is the result of Pt growth from the substrate immediately after the reduction, whereas the porous Pt structure originates from the precipitation of Pt nanoparticles. Pt deposited by this method could be used as the counter electrode of high-performance DSCs. The DSCs exhibited a power conversion efficiency (PCE) of 8.1%, quite close to that of the DSCs with Pt counter electrode prepared by the conventional pyrolysis. In addition, this low-temperature method enabled the Pt deposition on flexible substrate, which could be used as the flexible counter electrode for DSCs. The second types of materials are naoncomposites of multi-walled carbon nanotubes (MWCNTs) and poly(3, 4-ethy lenedioxy thiophene): poly (styrenesulfonate) (PEDOT:PSS) that is a conducting polymer. The composite films were prepared by spin-coating aqueous solutions of MWCNT/PEDOT: PSS composites. The devices exhibited a PCE of 6.5%.
Source Title: Nanotechnology 2010: Bio Sensors, Instruments, Medical, Environment and Energy - Technical Proceedings of the 2010 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2010
URI: http://scholarbank.nus.edu.sg/handle/10635/75233
ISBN: 9781439834152
Appears in Collections:Staff Publications

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