Journal
2022 IEEE LATIN AMERICAN ELECTRON DEVICES CONFERENCE (LAEDC)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/LAEDC54796.2022.9908202
Keywords
Degradation analysis; PM6:Y7 stability; organic solar cells; non-fullerene acceptors NFAs
Categories
Funding
- Ministerio de Ciencia e Innovacion [PDI2021-128342OB-I00]
- Diputacio de Tarragona [2021CM14]
- Spanish Ministry of Science and Innovation (MICINN/FEDER) [RTI2018-094040-B-I00]
- Agency for Management of University and Research Grants (AGAUR) [2017-SGR-1527]
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This study reports a degradation study of high-efficiency organic solar cells. The results show that the power conversion efficiency of the PM6:Y7-based device decreases over the storage time.
In this work, we report a degradation study of high-efficiency organic solar cells (OSCs). The active layer uses PM6 as a donor and Y7 as an acceptor material, respectively. High performance of the PM6:Y7-based device is achieved with the power conversion efficiency (PCE) of up to 17.3% under 1 sun illumination for the fresh device. To gain a better understanding of PM6:Y7 stability, we developed the analysis of the degradation process over the storage time. The PCE of the device decreased to 82% of the initial PCE after 888 h. The electrical parameters during the degradation process were extracted from the current density - voltage characteristics (J-V) under light and dark conditions.
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