Novel oligomers enable high-efficiency, eco-friendly and scalable organic solar cells enabled via regulating morphology and mitigating energy losses

Ying Zhang; Hao Xia; Gang Li

doi:10.1117/12.2676714

6 October 2023 Novel oligomers enable high-efficiency, eco-friendly and scalable organic solar cells enabled via regulating morphology and mitigating energy losses

Ying Zhang, Hao Xia, Gang Li

Author Affiliations +

Proceedings Volume PC12660, Organic, Hybrid, and Perovskite Photovoltaics XXIV; PC126600W (2023) https://doi.org/10.1117/12.2676714
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Conference Poster

Abstract

The large non-radiative recombination is the main factor that limits organic solar cells (OSCs). In this work, we synthetized two novel structurally similar oligomers high-performance ternary OSCs with low energy loss. As third components, these PM6 analogue oligomers effectively suppress the non-radiative recombination of the ternary OSCs, the oligomers showed ultra-high EQEEL of 0.05% and improved VOC was achieved in ternary OSCs. Moreover, the different compatibility of 5BDTBDD and 5BDDBDT with PM6 and BTP-BO4Cl fine-tunes the morphology of the active layer. This is the first work that demonstrates novel structurally compatible D-A type oligomers are effective third components, and provides new understanding of energy loss mechanisms towards high performance OSCs.

Citation Download Citation

Ying Zhang, Hao Xia, and Gang Li "Novel oligomers enable high-efficiency, eco-friendly and scalable organic solar cells enabled via regulating morphology and mitigating energy losses", Proc. SPIE PC12660, Organic, Hybrid, and Perovskite Photovoltaics XXIV, PC126600W (6 October 2023); https://doi.org/10.1117/12.2676714

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