TY - JOUR
T1 - High Efficiency of Ternary Blend Organic Solar Cells with a BTP-4F/BTP-4H Derivative
AU - Yun, Donghwan
AU - Xuyao, Song
AU - Lee, Seul Yi
AU - Sharma, Vivek Vishal
AU - Li, Huan
AU - Park, Soo Jin
AU - Kim, Yun Hi
AU - Kim, Gi Hwan
N1 - Publisher Copyright:
© 2024 American Chemical Society.
PY - 2024/2/12
Y1 - 2024/2/12
N2 - Organic solar cells (OSCs) are renowned for their flexibility, cost-efficiency, and creative design options, yet persistent challenges drive ongoing research for improvement. One approach involves the replacement of fullerene acceptors with nonfullerene acceptors (NFAs) to address issues related to narrow absorption bands and low oxidation stability stemming from structural limitations. Another strategy tackles the limited absorption range and energy losses associated with bulk heterojunction (BHJ) OSCs by introducing ternary blend. In our study, we harnessed NFAs and ternary blend to address these OSC shortcomings. We engineered a novel NFA, Y5-BT, by modifying the side chain and extending the conjugation in the end group of Y5. This tailored NFAs demonstrated promise in improving energy level charge transport when incorporated into the ternary OSC PM6/Y6/Y5-BT, acting like an alloy-like model. In our optimized PM6/Y6/Y5-BT device, we achieved an open-circuit voltage (VOC) = 0.873 V, a short-circuit current density (JSC) = 27.2 mA cm-2, a fill factor (FF) = 73.5%, and a power conversion efficiency (PCE) = 17.6%.
AB - Organic solar cells (OSCs) are renowned for their flexibility, cost-efficiency, and creative design options, yet persistent challenges drive ongoing research for improvement. One approach involves the replacement of fullerene acceptors with nonfullerene acceptors (NFAs) to address issues related to narrow absorption bands and low oxidation stability stemming from structural limitations. Another strategy tackles the limited absorption range and energy losses associated with bulk heterojunction (BHJ) OSCs by introducing ternary blend. In our study, we harnessed NFAs and ternary blend to address these OSC shortcomings. We engineered a novel NFA, Y5-BT, by modifying the side chain and extending the conjugation in the end group of Y5. This tailored NFAs demonstrated promise in improving energy level charge transport when incorporated into the ternary OSC PM6/Y6/Y5-BT, acting like an alloy-like model. In our optimized PM6/Y6/Y5-BT device, we achieved an open-circuit voltage (VOC) = 0.873 V, a short-circuit current density (JSC) = 27.2 mA cm-2, a fill factor (FF) = 73.5%, and a power conversion efficiency (PCE) = 17.6%.
KW - NFAs
KW - alloy-like model
KW - organic solar cells
KW - power conversion efficiency
KW - ternary blend
UR - https://www.scopus.com/pages/publications/85184865722
U2 - 10.1021/acsaem.3c02876
DO - 10.1021/acsaem.3c02876
M3 - Article
AN - SCOPUS:85184865722
SN - 2574-0962
VL - 7
SP - 1243
EP - 1249
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 3
ER -