High performance quasi-solid-state dye-sensitized solar cells based on poly(lactic acid -co-glycolic acid)
SCIE
SCOPUS
- Title
- High performance quasi-solid-state dye-sensitized solar cells based on poly(lactic acid -co-glycolic acid)
- Authors
- Woosung Kwon; Rhee, SW
- Date Issued
- 2011-12-01
- Publisher
- Elsevier
- Abstract
- A stable quasi-solid-state dye-sensitized solar cell (DSC) with a novel amphiphilic polymer gel electrolyte (APGE) based on poly(lactic acid-co-glycolic acid) ( PLGA) is fabricated. The APGE could be readily prepared by a simple method at low temperature of 50 degrees C and exhibits a quasi-solid property, high conductivity, and long-term stability. The 20 and 40 wt% APGE-based DSCs show high photovoltaic conversion efficiency of 7.5 and 7.4%, respectively, under AM 1.5 simulated sunlight, which is comparable to the liquid electrolyte-based DSC with the efficiency of 7.6%. The 40 wt% APGE-based DSC maintains 95% of the initial performance after 60 days in practical conditions. It is also noteworthy that the APGE endows with higher short-circuit current density than the liquid electrolyte. Different natures of the APGE from the typical polymer gel electrolytes have been elucidated by the I-V measurements, electrochemical impedance spectroscopy, electrophoretic measurements, and transmission electron microscopy. (C) 2011 Elsevier B.V. All rights reserved.
- Keywords
- Polymer gel electrolytes; Dye-sensitized solar cells; Poly(lactic acid-co-glycolic acid); Amphiphilic; IONIC LIQUID ELECTROLYTE; POLYMER GEL ELECTROLYTE; NANOCRYSTALLINE TIO2; SOLVENT-FREE; TEMPERATURE-DEPENDENCE; EFFICIENCY; CONVERSION; TRANSPORT; RECOMBINATION; SPECTROSCOPY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17029
- DOI
- 10.1016/J.JPOWSOUR.2011.08.053
- ISSN
- 0378-7753
- Article Type
- Article
- Citation
- JOURNAL OF POWER SOURCES, vol. 196, no. 23, page. 10532 - 10537, 2011-12-01
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