Suh, Youngjoon Lu, Ning Lee, Sang H. Chung, Won-Suk Kim, Kyungkon Kim, BongSoo Ko, Min Jae Kim, Moon J. 2024-01-20T14:00:34Z 2024-01-20T14:00:34Z 2021-09-05 2012-10 1944-8244 https://pubs.kist.re.kr/handle/201004/128789 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/TiO2/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 Xray 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 coriosion 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. English American Chemical Society Degradation of a Thin Ag Layer Induced by Poly(3,4ethylenedioxythiophene):Polystyrene Sulfonate in a Transmission Electron Microscopy Specimen of an Inverted Polymer Solar Cell Article 10.1021/am301818z 1 ACS Applied Materials & Interfaces, v.4, no.10, pp.5118 - 5124 ACS Applied Materials & Interfaces 4 10 5118 5124 scie scopus 000310109000011 2-s2.0-84867800817 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article Ag layer inverted polymer solar cell particles transmission electron microscopy energy-dispersive X-ray spectroscopy electron tomography