Please use this identifier to cite or link to this item: https://doi.org/10.1039/c3ta13217j
Title: Ethyl cellulose and functionalized carbon nanotubes as a co-gelator for high-performance quasi-solid state dye-sensitized solar cells
Authors: Neo, C.Y.
Ouyang, J. 
Issue Date: 7-Dec-2013
Source: Neo, C.Y., Ouyang, J. (2013-12-07). Ethyl cellulose and functionalized carbon nanotubes as a co-gelator for high-performance quasi-solid state dye-sensitized solar cells. Journal of Materials Chemistry A 1 (45) : 14392-14401. ScholarBank@NUS Repository. https://doi.org/10.1039/c3ta13217j
Abstract: Long term device stability and high power conversion efficiency (PCE) are important for practical application of dye-sensitized solar cells (DSCs). Here, we report the use of ethyl cellulose (EC) and acid functionalized multi-walled carbon nanotubes (oMWCNTs) as a co-gelator to gel organic solvents and the application of these gels for quasi-solid state DSCs. The gels are formed by blending EC and oMWCNTs with methoxypropionitrile (MPN) and acetonitrile (ACN). The loadings of EC and oMWCNTs can be as low as 4 wt% and 1.5 wt%, respectively, for the gel formation. The total minimum gelator loading of EC and oMWCNTs is lower than that with EC alone. In the absence of oMWCNTs, the EC loading must be more than 12 wt% for the gel formation. Gel electrolytes were prepared by adding iodine, 1-methyl-3-propylimidazolium iodide (PMII), guanidinium thiocyanate and 4-tert-butyl pyridine into the EC-oMWCNT/ACN-MPN gels, and they were used to fabricate quasi-solid state DSCs. The optimal PCE of the gel DSCs was 6.97% under AM1.5G illumination, quite close to that of control liquid DSCs, while the gel DSCs have better long term stability than their liquid-state counterparts. The former retains more than 98% of the initial PCE after 30 days, whereas the PCE of the latter decreases to about 80%. © 2013 The Royal Society of Chemistry.
Source Title: Journal of Materials Chemistry A
URI: http://scholarbank.nus.edu.sg/handle/10635/64868
ISSN: 20507488
DOI: 10.1039/c3ta13217j
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

12
checked on Dec 7, 2017

WEB OF SCIENCETM
Citations

12
checked on Nov 23, 2017

Page view(s)

37
checked on Dec 11, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.