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Degradation of a thin ag layer induced by poly(3,4-ethylenedioxythiophene): Polystyrene sulfonate in a transmission electron microscopy specimen of an inverted polymer solar cell

Title
Degradation of a thin ag layer induced by poly(3,4-ethylenedioxythiophene): Polystyrene sulfonate in a transmission electron microscopy specimen of an inverted polymer solar cell
Authors
Suh Y.Lu N.Lee S.H.Chung W.-S.Kim K.Kim B.Ko M.J.Kim M.J.
Ewha Authors
김경곤
SCOPUS Author ID
김경곤scopus
Issue Date
2012
Journal Title
ACS Applied Materials and Interfaces
ISSN
1944-8244JCR Link
Citation
vol. 4, no. 10, pp. 5118 - 5124
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
It was found that the Ag electrode layer in a transmission electron microscopy (TEM) specimen of an inverted polymer solar cell structure of Ag/PEDOT:PSS/P3HT:PCBM/TiO 2/ITO/glass (where PEDOT is poly(3,4-ethylenedioxythiophene), PSS is polystyrene sulfonate, and ITO is indium tin oxide) was broken down into particles as time passed. In order to investigate the cause of Ag particle formation and the effect of the degradation on the performance of solar cells, the temporal change of the cross-sectional TEM micrographs was examined together with energy-dispersive X-ray spectroscopy (EDS) analysis and electron tomography. Temporal degradation of Ag/Si and Ag/1 nm-Ti/PEDOT:PSS/ITO/glass structures was also studied. Absorption of water by the PEDOT:PSS layer followed by corrosion of the grain boundaries of the Ag layer by the corrosive water was thought to be the reason of Ag particle formation and fast performance lowering of the device. © 2012 American Chemical Society.
DOI
10.1021/am301818z
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자연과학대학 > 화학·나노과학전공 > Journal papers
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