Figure 4 | Scientific Reports

Figure 4

From: Toward Improved Lifetimes of Organic Solar Cells under Thermal Stress: Substrate-Dependent Morphological Stability of PCDTBT:PCBM Films and Devices

Figure 4

TOF-SIMS results of the PC60BM trace (C72H14O2−) of PCDTBT:PC60BM films cast onto PEDOT:PSS (black) and ZnO (red) substrates.

The substrate interfaces are identified by the C8H7SO3− and ZnO− traces for the PEDOT:PSS (dark grey) and ZnO (light grey) substrates, in relative units. PC60BM enrichment at the ZnO substrate is observed, with respect to PEDOT:PSS.

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