Enhanced DSSC performance with high surface area thin anatase TiO2 nanoleaves

TitleEnhanced DSSC performance with high surface area thin anatase TiO2 nanoleaves
Publication TypeJournal Article
Year of Publication2011
AuthorsDhas, VV, Muduli, S, Agarkar, SA, Rana, A, Hannoyer, B, Banerjee, R, Ogale, SB
JournalSolar Energy
Date PublishedJUN
Type of ArticleArticle
KeywordsDye-sensitized solar cells, Electrochemical impedance spectroscopy, hydrothermal

Thin anatase TiO2 nanoleaves (NLs) with high surface area (similar to 93 m(2)/g) are synthesized by hydrothermal route and dye-sensitized solar cells (DSSC) made using such NLs are compared with those made with hydro-thermally synthesized TiO2 nanoparticles and the Degussa P25 powder. The NLs-based DSSCs show increment of 16% and 24% in the total conversion efficiency over the cells made with NPs and P25 respectively. Interestingly, the highest increment in the conversion efficiency (similar to 35%) is achieved for cells made using a 50:50 (wt/wt) mixture of NLs and NPs. In this case the dye loading is found to be >50% higher than the case of NP films. Moreover the DC resistance of diffusion of I-3(-) in electrolyte (as revealed by the electrochemical impedance spectroscopy) is substantially lower than the NP film case, other cell parameters being nominally comparable. (C) 2011 Elsevier Ltd. All rights reserved.

Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)3.69
Divison category: 
Physical and Materials Chemistry