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Direct observation of surface and internal phase-separated structure of the active layer buried in organic photovoltaic cells |
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| Authors: | Ifu Narayama Atsushi Takahara |
| Affiliation: | a Department of Automotive Science, Kyushu University, Fukuoka 819-0395, Japan b Department of Applied Chemistry, Kyushu University, Fukuoka 819-0395, Japan c Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 819-0395, Japan |
| Abstract: | A phase-separated structure of the active layer, of variable thickness, buried in organic thin film solar cells (OTSC) was directly observed by scanning force microscopy (SFM) with the aid of a surface and interface cutting analysis system (SAICAS). This deals with SFM observation to both the surface and the internal regions of the OTSCs, leading to discussion about the formation of the overlayer in the active layer. |
| Keywords: | Scanning force microscopy (SFM) Surface and interface cutting analysis system (SAICAS) Surface segregation Polymer blends |
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