Published: Jan. 1, 2024
Language: Английский
Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(36)
Published: May 19, 2023
Abstract A simultaneous further increase in the power conversion efficiency (PCE) and device stability of organic solar cells (OSCs) over current levels needs to be overcome for their commercial viability. Herein, a bay‐area benzamide‐functionalized perylene diimide‐based electron transport layer, namely H75 is developed, obtain aforementioned characteristics. The advantages H75‐employed OSCs include notable PCE up 18.26% outstanding stabilities under conditions varying severity (>95% retention after 1500 h upon long‐term aging exceptional T80 lifetimes (the time required reach 80% initial performance) 1000 light‐soaking, 500 thermal stress at 85 °C, 72 85% high relative humidity, 100 atmospheric‐air without encapsulation conventional architecture). excellent performance OSC can attributed its various beneficial features derived from benzamide functionalities (e.g., film‐forming ability, suitable energy level, reduced aggregation, intrinsic structural stability). findings this work provide insights into molecular design layers realizing more efficient stable OSCs.
Language: Английский
Citations
45
Advanced Materials, Journal Year: 2024, Volume and Issue: 36(23)
Published: Feb. 19, 2024
Abstract Achieving desirable charge‐transport highway is of vital importance for high‐performance organic solar cells (OSCs). Here, it shown how molecular packing arrangements can be regulated via tuning the alkyl‐chain topology, thus resulting in a 3D network stacking and highly interconnected pathway electron transport simple‐structured nonfused‐ring acceptor (NFREA) with branched alkyl side‐chains. As result, record‐breaking power conversion efficiency 17.38% (certificated 16.59%) achieved NFREA‐based devices, providing an opportunity constructing low‐cost high‐efficiency OSCs.
Language: Английский
Citations
32
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 5, 2025
Abstract Organic solar cells (OSCs) have shown great applications potential in flexible/wearable electronics, indoor photovoltaics and so on. The efficiencies of single‐junction OSCs exceeded 19%, making the commercialization brighter. Large‐area printing fabrication is a key way to OSCs, solution‐processed thickness‐insensitive cathode interlayers (CILs) are urgently needed for large‐area fabrication. High electron mobility interfacial materials (CIMs) critical enable CILs. N‐type self‐doped characteristics can endow organic CIMs with high mobility. Different type n‐type show different applicability conventional inverted OSCs. External dopants further increase hybrid blends. Particularly, ZnO doped dyes achieve superior photoconductivity This review focuses on CILs high‐performance In small molecules polymers, external n‐doped blends as summarized. small‐molecular electrolytes polyelectrolytes, PEI‐/PEIE‐based (including organic‐organic ZnO‐organic) summarized relationships between particular functions chemical structures highlighted. Finally, summary outlook provided.
Language: Английский
Citations
6
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(34)
Published: June 5, 2024
The structure of molecular aggregates is crucial for charge transport and photovoltaic performance in organic solar cells (OSCs). Herein, the intermolecular interactions aggregated structures nonfused-ring electron acceptors (NFREAs) are precisely regulated through a halogen transposition strategy, resulting noteworthy transformation from 2D-layered to 3D-interconnected packing network. Based on 3D pathway, binary ternary devices deliver outstanding power conversion efficiencies (PCEs) 17.46 % 18.24 %, respectively, marking highest value NFREA-based OSCs.
Language: Английский
Citations
13
Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 16, 2025
Abstract Intrinsically stretchable organic photovoltaics (IS‐OPVs) are emerging as power sources for wearable technologies, enabling seamless integration into flexible and systems. A key feature of IS‐OPVs is the potential increased output photoactive area expands during stretching. However, current mechanical performance stability still fall short meeting demands practical applications. To overcome this limitation, study introduces, first time, a polymer:gel blend system highly electron transporting layer (ETL), which significantly enhances both IS‐OPVs. This novel ETL plays pivotal role in dissipating stress protecting brittle underlying layers. By incorporating ETL, device stretchability reinforced by introducing thereby maintaining initial conversion efficiency under 20% strain. As result, maximum substantially increases 23%, from 0.28 to 0.35 mW, large strain, while devices with conventionally ETLs caused 33% reduction output. thus offers pathway toward durable efficient photovoltaics.
Language: Английский
Citations
2
ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(9), P. 3851 - 3862
Published: Feb. 21, 2024
D–A polymers exhibit excellent intramolecular charge transfer (ICT) properties due to the differences in energy levels. However, bulky dihedral angles between D and A units with conjugated structures have a negative impact on process of ICT, which inhibits efficient electron transport adjacent units. To solve this problem, noncovalent conformational locks were constructed by introduction π-bridges. Intriguingly, thiophene π-bridges containing sulfur elements can form S─H locks, not only extend structure overcome steric hindrance but also enhance efficiency transport. Therefore, PFPy-TT PFPy-TTBT exhibited superior short-circuit density (JSC) compared PFPy-BT without locks. Meanwhile, benzothiazole moiety exhibits stronger ICT better extraction structure. The enhanced enable intermolecular performance, realizing power conversion (PCE) 16.15%. By constructing using cathode interfacial layers (CILs), problem inferior coplanarity is resolved, favorable molecular alignment promoted, while demonstrating exceptional storage, light, heat, air stability. device maintains over 80% its initial PCE value when stored nitrogen condition for 120 h. These advances hold promise improving film quality organic solar cells.
Language: Английский
Citations
8
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(11), P. 6644 - 6651
Published: Jan. 1, 2024
We report a series of hydroxylated PDI derivatives as CILs with exceptional comprehensive performance. After continuous illumination, the extrapolated T 80 lifetime for device 30 nm-thick PDI-Br-3O is estimated to be 3995 h.
Language: Английский
Citations
7
ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(3), P. 1090 - 1096
Published: Feb. 20, 2024
Interfacial modulation is crucial for optimizing charge carrier management and thwarting undesired ion-metal diffusion in perovskite photovoltaics. This study highlights a groundbreaking approach, employing semiconducting perylene-diimide (PDINN) as cathode interlayer (CIL) an inverted tin halide solar cell (THPSC). PDINN imparts the THPSCs with remarkable efficiency rate of 13.05% well substantial stability, achieving best performance among reported thus far. The incorporation improves energy level alignment mitigates interfacial trap density, also serving robust barrier to Cu I ions due strong interactions between it PC61BM electron transport layer or cathode. CIL introduced this pioneering application that concurrently boosts while ensuring unprecedented stability.
Language: Английский
Citations
7
Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 1, 2025
Language: Английский
Citations
1
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161155 - 161155
Published: March 1, 2025
Language: Английский
Citations
1