Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 33, Issue 24, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.202300214
Keywords
3D structures; electron acceptors; perylene diimide; ternary organic solar cells
Ask authors/readers for more resources
Integrating a novel perylene diimide (PDI) derivative, TPA-4PDI, with a 3D structure into PM6:Y6 binary system can enhance the power conversion efficiency (PCE) of organic solar cells (OSCs). By incorporating 7.5 wt.% of TPA-4PDI in the ternary blend, the champion PCE of ternary OSCs reaches 18.29%, with improved V-oc, J-sc, and FF due to synergistic effects.
Integrating a third component into the binary system is considered to be one of the most effective strategies to further enhance the power conversion efficiency (PCE) in organic solar cells (OSCs). Here, a novel perylene diimide (PDI) derivative featuring 3D structure, TPA-4PDI, with tetraphenyladamantane central core is developed as a guest electron acceptor to be incorporated into the PM6:Y6 binary system. The champion PCE of ternary OSC is recorded to be 18.29% by adding 7.5 wt.% of TPA-4PDI in the ternary blend, which photovoltaic performance is enhanced with synergistically increased open-circuit voltage (V-oc) of 0.849 V, short-circuit current density (J(sc)) of 27.55 mA cm(-2), and fill factor (FF) of 78.21%. TPA-4PDI exhibits a complementary absorption band with PM6 and Y6 while its lowest unoccupied molecular orbital (LUMO) energy level falls between the two host materials. The addition of TPA-4PDI can effectively suppress the recombination behavior, inhibit the excessive aggregation of Y6 and improve the morphology of PM6:Y6 blend. All these effects function synergistically and then lead to the enhancement of V-oc,V- J(sc), and FF in ternary OSCs. This study suggests that developing PDI derivatives as the third component is an effective method to further improve the performance of ternary OSCs.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available