Enhancing the photovoltaic performance with two similar structure polymers as donors by broadening the absorption spectrum and optimizing the molecular arrangement
作者： Zhiyong Liu
DOI: 10.1016/J.ORGEL.2021.106153
关键词:
摘要: Ternary organic photovoltaics (OPVs) were fabricated with two polymers (PM6 and D18) as the donor and the fullerene-free small molecule Y6 as the acceptor in an inverted structure. The blueshifted absorption spectrum of neat D18 relative to neat PM6 can enable harvesting of more short and medium wavelength photons in the ternary photoactive layer, which is beneficial to increasing the short-circuit current density (J SC). The enhancement of the open-circuit voltage (V OC) of the ternary OPVs can be explained by the deeper HOMO level …
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