標題: High-Performance Gel-Type Dye-Sensitized Solar Cells Using Poly (methyl methacrylate-co-ethylacrylate)-Based Polymer Gel Electrolyte with Superior Enduring Stability
作者: Seidalilir, Zahra
Malekfar, Rasoul
Shiu, Jia-Wei
Wu, Hui-Ping
Diau, Eric Wei-Guang
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 1-Jan-2015
摘要: We fabricated high-performance gel-state dye-sensitized solar cells (DSSCs) using TiO2 nanoparticles (NPs) and one-dimensional TiO2 nanotube (NT) arrays as electrodes and a polymer gel electrolyte (PGE), poly(methyl methacrylate-co-ethyl acrylate) (PMMA-EA), as a gelator in 3-methoxypropionitrile (MPN). MPN instead of acetonitrile (ACN) was used as a solvent to prepare PGE to overcome the drawback of high volatility of ACN so as to improve the long-term stability of the devices. The viscosities of the PGEs containing varied concentrations of PMMA-EA copolymer (4-13 wt%) were measured to obtain the gel to liquid phase transition temperature (T-p) of the PGEs. T-p systematically increased with increasing concentration of PMMA-EA. We found that the as prepared PGE showed the best electrical conductivity of 1.6 mS cm(-1) at 10 wt% of PMMA-EA, which is comparable with the value of the liquid electrolyte (1.7 mS cm(-1)). By employing 10 wt% of PMMA-EA as POE in MPN, the gel-type NT and NP-based devices exhibited power conversion efficiencies (PCE) 6.3 and 8.4%, respectively, which are comparable to those of the corresponding liquid-type counterparts, PCE = 6.4 and 9.1%, respectively. In addition, the enduring stability of MPN-based gel-state device was found to retain a high device efficiency for a long period under thermal and light-soaking dual stress. (C) 2015 The Electrochemical Society. All rights reserved.
URI: http://dx.doi.org/10.1149/2.0611514jes
http://hdl.handle.net/11536/129440
ISSN: 0013-4651
DOI: 10.1149/2.0611514jes
期刊: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 162
Issue: 14
起始頁: H922
結束頁: H928
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