Presentation Information
[9p-E201-9]Comparison of non-fullerene-based organic photovoltaics between conventional and inverted structures that consist of the same materials
〇(D)Karin Iwa1,2, Lulu Sun1, Kenjiro Fukuda1,3, Takao Someya1,4, Shinjiro Umezu2 (1.RIKEN, 2.Waseda Univ., 3.Univ. Osaka, 4.Univ. Tokyo)
Keywords:
organic photovoltaics,PEDOT:PSS,stability
An equitable comparison between conventional and inverted organic photovoltaics (OPVs) is needed for further discussion on OPV performance. However, due to the poor wettability of PEDOT:PSS on active layers in inverted OPVs, there have been no reports comparing actual OPV devices with conventional and inverted structures consisting of the same materials.
We have previously reported that PEDOT:PSS can be formed uniformly on non-fullerene-based active layers by reducing humidity during its spin-coating, which enables the use of PEDOT:PSS as a hole-transport layer in inverted OPVs. This presentation provides a comparison of performance and stability between conventional and inverted OPVs, using the exact same materials, including PEDOT:PSS hole-transport layers in both devices. We will discuss the differences in degradation mechanisms of OPVs in various stress conditions.
We have previously reported that PEDOT:PSS can be formed uniformly on non-fullerene-based active layers by reducing humidity during its spin-coating, which enables the use of PEDOT:PSS as a hole-transport layer in inverted OPVs. This presentation provides a comparison of performance and stability between conventional and inverted OPVs, using the exact same materials, including PEDOT:PSS hole-transport layers in both devices. We will discuss the differences in degradation mechanisms of OPVs in various stress conditions.