Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
DOI: https://doi.org/10.29363/nanoge.hopv.2023.210
Publication date: 30th March 2023
The ternary blend approach has been shown to improve spectral coverage and enhance power conversion efficiency (PCE) of the single junction organic bulk heterojunction solar cells. However, several parameters, such as domain morphology, exciton lifetime, energy, and charge transfer, influence the resulting PCE. In this regard, we conducted a systematic study to compare charge and energy transfer dynamics and orientational dependence nanomorphology of ternary blends and were compared with their binary counterparts. In this talk, I will discuss our findings into employing non-fullerene acceptors (NFA) having complementary absorption to alternatively harvest the photons via resonant energy transfer process to realize improved photovoltaic performance in ternary blend. In addition, I will also discuss the GIWAXS measurements that the incorporation of third component enhances lamellar stacking in the PM6 nanodomains along with increased crystallization in the Y6 nanodomains, hence decreasing structural disorder. Our study provides insight into employing non-fullerene acceptors (NFA) having complementary absorption to alternatively harvest the photons via resonant energy transfer process to realize improved photovoltaic performance in OSCs.
S.P. thank the Science and Engineering Research Board (SERB) for funding under the scheme of IRHPA grant no. IPA/2020/000033.
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