Effect of Charge Carrier Dynamics and Photovoltaic Performance in Organic Solar Cells with the Incorporation of a Third Component
발표자
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초록
내용
The addition of a third component can effectively enhance the device performance of ternary organic solar cells (OSCs) while retaining the benefits of a single-junction device structure that is easy to manufacture. Here, ternary OSCs are fabricated using PM6 as an electron donor material, BTP-eC9 and ITIC-Th as an electron acceptor materials. Incorporation of ITIC-Th into PM6:BTP-eC9 blends improves the open circuit voltage (VOC), and VOC increases progressively with increasing ITIC-Th content. Additionally, the distinct absorption regions of PM6, BTP-eC9, and ITIC-Th contribute to an increase in short-circuit current density (JSC). Photoluminescence and charge carrier dynamics analyses demonstrate that the enhanced VOC and JSC result from efficient exciton dissociation and charge transfer state recombination in ternary OSCs. This study elucidates the impact of the third component on the efficient charge transfer processes in ternary OSCs.