Abstract
The interfacial degradation between P3HT and MoO3 is the main reason for fast VOC and FF decays of polymer solar cells, which can be suppressed by inserting a thin C60 layer.
Highlights
With the increase of power conversion efficiency, the stability of Polymer solar cells (PSCs) has been recognized as the most important issue to be solved before the commercialization of PSCs
The polymer:fullerene bis-adduct based solar cells demonstrate a fast ‘‘burn-in’’ degradation under light illumination, where VOC and fill factor (FF) decays are quite significant to the overall performance degradation when compared to the phenyl-C61-butyric acid methyl ester (PC61BM) based cells
The recovery of VOC and FF of the cell by renewing the MoO3/Al electrode of the aged cell indicates that the interfacial degradation at the photoactive layer and MoO3 could be the main reason for VOC and FF decays
Summary
With the increase of power conversion efficiency, the stability of PSCs has been recognized as the most important issue to be solved before the commercialization of PSCs. By analyzing the interfacial properties of the solar cells during degradation, it can be clearly proved that the interfacial photoreduction of the MoO3 layer by a conjugated polymer is the main reason leading to the fast VOC and FF decays Based on this finding, the methods to improve the stability of the cells are established, including doping the photoactive layer with piperazine and depositing a thin layer of C60 on the surface of the active layer. The current work gives a detailed understanding of the interfacial degradation of polymer:fullerene cells, which will guide in improving the stability of different types of polymer solar cells
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
