Matter, Год журнала: 2022, Номер 5(6), С. 1877 - 1889
Опубликована: Апрель 19, 2022
Язык: Английский
Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(46)
Опубликована: Сен. 2, 2022
Herein, we synthesized new hetero-halogenated end groups with well-determined fluorinated and chlorinated substitutions (o-FCl-IC FClF-IC), regioisomer-free small molecular acceptors (SMAs) Y-Cl, Y-FCl, Y-FClF distinct terminals, respectively. The single-crystal structures theoretical calculations indicate that exhibits more compact three-dimensional network packing significant π-π electronic coupling compared to Y-FCl. From Y-Cl Y-FCl Y-FClF, the neat films exhibit a narrower optical band gap gradually enhanced electron mobility crystallinity. PM6 : blend film strongest crystallinity preferential face-on packing, desirable fibrous morphology suitable phase segregation, highest balanced charge mobilities among three films. Overall, organic solar cells (OSCs) deliver remarkable efficiency of 17.65 %, outperforming which is best PCE for reported hetero-halogens-based SMAs in binary OSCs. Our results demonstrate difluoro-monochloro hetero-terminal superior regio-regular unit enhancing intermolecular crystal photovoltaic performance SMAs.
Язык: Английский
Процитировано
91
Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(10)
Опубликована: Янв. 2, 2023
Side-chain tailoring is a promising method to optimize the performance of organic solar cells (OSCs). However, asymmetric alkyl chain-based small molecular acceptors (SMAs) are still difficult afford. Herein, we adopted novel n-nonyl/undecyl substitution strategy and synthesized two A-D1 A'D2 -A double isomeric SMAs with selenophene-based central core for OSCs. Crystallographic analysis indicates that AYT9Se11-Cl forms more compact order intermolecular packing compared AYT11Se9-Cl, which contributed higher electron mobility in neat film. Moreover, PM6 : blend film shows better morphology appropriate phase separation distinct face-on orientation than AYT11Se9-Cl. The OSCs obtain superior PCE 18.12 % AYT11Se9-Cl (17.52 %), best efficiency selenium-incorporated binary BHJ Our findings elucidate chains precisely modulates crystal enhances photovoltaic selenophene-incorporated SMAs.
Язык: Английский
Процитировано
79
Science China Chemistry, Год журнала: 2022, Номер 65(6), С. 1157 - 1163
Опубликована: Май 10, 2022
Язык: Английский
Процитировано
77
Joule, Год журнала: 2024, Номер 8(2), С. 509 - 526
Опубликована: Янв. 11, 2024
Язык: Английский
Процитировано
75
Advanced Functional Materials, Год журнала: 2023, Номер 33(14)
Опубликована: Янв. 22, 2023
Abstract With the emergence of ADA'DA‐type (Y‐series) non‐fullerene acceptors (NFAs), power conversion efficiencies (PCEs) organic photovoltaic devices have been constantly refreshed and gradually reached 20% in recent years (19% for single junction tandem device). The possess specific design concept, which greatly enrich NFA types excellent compatibility with many donor materials. It is gratifying to note that previously underperforming materials combine these regulated shine again. Nowadays, concept modular widely used research donors, injecting new vitality into field photovoltaics. Furthermore, also promote multicomponent devices, bilayer processing solvent engineering, additive engineering. Herein, latest progresses polymer solar cells efficiency over 17% are briefly reviewed from aspects active material design, interface development, device technology. At last, opportunities challenges commercialization future discussed.
Язык: Английский
Процитировано
74
Advanced Science, Год журнала: 2022, Номер 9(14)
Опубликована: Март 21, 2022
The tuning of vertical morphology is critical and challenging for organic solar cells (OSCs). In this work, a high open-circuit voltage (V
Язык: Английский
Процитировано
72
Chemical Engineering Journal, Год журнала: 2023, Номер 471, С. 144711 - 144711
Опубликована: Июль 13, 2023
Язык: Английский
Процитировано
57
Advanced Functional Materials, Год журнала: 2024, Номер 34(16)
Опубликована: Янв. 2, 2024
Abstract The layer‐by‐layer (LbL) organic photovoltaics (OPVs) are constructed with wide‐bandgap donor PM1 and narrow‐bandgap acceptor L8‐BO. exciton utilization near cathode is still challenging considering restricted diffusion distance of excitons inability for transferring energy from L8‐BO to PM1. Herein, incorporation into layer (DIA) strategy employed improve cathode. efficiency LbL OPVs can be improved 18.02% 18.81% by incorporating 10 wt% layer, which closely associated efficient separation originated more adequate donor/acceptor interface faster charge transfer, as evidenced magneto‐photocurrent transient absorption results. in situ test morphological characterization clarify that molecular packing property benefited prolonged aggregation nucleation time assisted DIA strategy, contributing transport inhibited recombination active layers. thickness insensitive also induced indicated PCE retention value (82.2% vs. 74.0%) PM1/L8‐BO:PM1 PM1/L8‐BO when increased ≈180 nm. This work demonstrates the effectiveness improving tolerance OPVs.
Язык: Английский
Процитировано
51
Materials Science in Semiconductor Processing, Год журнала: 2023, Номер 163, С. 107541 - 107541
Опубликована: Май 10, 2023
Язык: Английский
Процитировано
45
Chemical Society Reviews, Год журнала: 2024, Номер 53(9), С. 4674 - 4706
Опубликована: Янв. 1, 2024
This review summarizes the recent progress, key design principles and prospects of dimer multimer acceptors for developing polymer solar cells (PSCs) with high efficiency long-term stability.
Язык: Английский
Процитировано
45