Y‐Type Non‐Fullerene Acceptors with Outer Branched Side Chains and Inner Cyclohexane Side Chains for 19.36% Efficiency Polymer Solar Cells
Sichuan University · Shaanxi Normal University · +1 more institution
Abstract
Abstract Raising the lowest unoccupied molecular orbital (LUMO) energy level of Y‐type non‐fullerene acceptors can increase the open‐circuit voltage ( V oc ) and thus the photovoltaic performance of the current top performing polymer solar cells (PSCs). One of the viable routes is demonstrated by the successful Y6 derivative of L8‐BO with the branched alkyl chains at the outer side. This will introduce steric hindrance and reduce intermolecular aggregation, thus open up the bandgap and raise the LUMO energy level. To take further advantages of the steric hindrance influence on optoelectronic properties of Y6 derivatives, two Y‐type non‐fullerene acceptors of BTP‐Cy‐4F and BTP‐Cy‐4Cl are designed and…
Citation impact
- FWCI
- 23.36
- Percentile
- 100%
- References
- 56
Authors
6Topics & keywords
- Side chain
- HOMO/LUMO
- Materials science
- Steric effects
- Fullerene
- Cyclohexane
- Energy conversion efficiency
- Polymer solar cell
- Affordable and clean energy
Funding
- UDU.S. Department of EnergyAwards: No. DE-SC0012704, SC0012704
- NNNational Natural Science Foundation of ChinaAwards: 21905185, DE-SC0012704, 2017-2, 22075190, 21825502, 22105135
- CPChina Postdoctoral Science FoundationAward: 2022M711997
- SUSichuan UniversityAwards: 2020CDZG-6, 2020CDYB-28
- SKState Key Laboratory of Polymer Materials EngineeringAward: 2017-2-04
- OOOffice of ScienceAwards: No. DE-SC0012704, Contract No. DE-SC0012704, SC0012704, DE-SC0012704
- BEBasic Energy SciencesAwards: Contract No. DE-SC0012704, DE-SC0012704, No. DE-SC0012704, SC0012704
- BNBrookhaven National LaboratoryAwards: SC0012704, No. DE-SC0012704, Contract No. DE-SC0012704