ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(14), С. 8348 - 8354
Опубликована: Июль 11, 2024
Язык: Английский
Angewandte Chemie International Edition, Год журнала: 2023, Номер 62(46)
Опубликована: Июль 12, 2023
Abstract Organic solar cells (OSCs) have attracted wide research attention in the past decades. Very recently, oligomerized fused‐ring electron acceptors (OFREAs) emerged as a promising alternative to small‐molecular/polymeric acceptor‐based OSCs due their unique advantages such well‐defined structures, batch reproducibility, good film formation, low diffusion coefficient, and excellent stability. So far, rapid advances been made development of OFREAs consisting directly/rigidly/flexibly linked oligomers fused ones. In this Minireview, we systematically summarized recent progress OFREAs, including structural diversity, synthesis approach, molecular conformation packing, long‐term Finally, conclude with future perspectives on challenges be addressed potential directions. We believe that Minireview will encourage novel for OSC applications.
Язык: Английский
Процитировано
81
Advanced Materials, Год журнала: 2023, Номер 36(3)
Опубликована: Сен. 22, 2023
Though encouraging performance is achieved in small-area organic photovoltaics (OPVs), reducing efficiency loss when evoluted to large-area modules an important but unsolved issue. Considering that polymer materials show benefits film-forming processability and mechanical robustness, a high-efficiency all-polymer OPV module demonstrated this work. First, ternary blend consisting of two donors, PM6 PBQx-TCl, one acceptor, PY-IT, developed, with which triplet state recombination suppressed for reduced energy loss, thus allowing higher voltage; donor-acceptor miscibility compromised enhanced charge transport, resulting improved photocurrent fill factor; all these contribute champion 19% OPVs. Second, the delayed crystallization kinetics from solution film solidification gives longer operation time window optimized morphology module, relieving factor record 16.26% on upscaled area 19.3 cm
Язык: Английский
Процитировано
42
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(35)
Опубликована: Июнь 11, 2024
All-polymer solar cells have experienced rapid development in recent years by the emergence of polymerized small molecular acceptors (PSMAs). However, strong chain entanglements polymer donors (PDs) and (PAs) decrease miscibility resulting mixtures, making it challenging to optimize blend morphology. Herein, we designed three PAs, namely PBTPICm-BDD, PBTPICγ-BDD PBTPICF-BDD, smartly using a BDD unit as copolymerize with different Y-typed non-fullerene (NF-SMAs), thus achieving certain degree distortion giving system enough internal space reduce chains. Such effects increase chances PD being interspersed into acceptor material, which improve solubility between PA. The PBTPICF-BDD displayed better PBQx-TCl, leading well optimized As result, high power conversion efficiencies (PCEs) 17.50 % 17.17 were achieved for PBQx-TCl : devices, respectively. With addition PYFT-o third component further extend absorption spectral coverage finely tune microstructures morphology, remarkable PCE 18.64 was realized finally.
Язык: Английский
Процитировано
13
Advanced Energy Materials, Год журнала: 2024, Номер unknown
Опубликована: Сен. 13, 2024
Abstract All‐polymer systems are promising for commercial applications because the lower diffusivity of polymers helps to inhibit large‐scaled phase separation and obtain excellent stability. Achieving a fine‐tuned morphology active layer with an appropriate vertical has long been major goal in obtaining efficient all‐polymer solar cells (all‐PSCs). Herein, through synergistic effect layer‐by‐layer (LBL) structure dual donor strategy, high performance stable all‐PSCs prepared by constructing interpenetrating network. The introduction third component PTzBI‐dF suppresses excessive aggregation reduces exciton recombination. formation favorable p‐i‐n adjust distribution improve Ultimately, fine optimization, PBQx‐T‐Cl:PTzBI‐dF/PY‐IT achieves PCE 18.83%. This research demonstrates simple effective way construct high‐performance OSCs desirable distribution.
Язык: Английский
Процитировано
7
Small, Год журнала: 2023, Номер 20(12)
Опубликована: Ноя. 9, 2023
Abstract The ternary strategy is one of the effective methods to regulate morphology active layer in organic solar cells (OSCs). In this work, OSCs with bulk heterojunction (BHJ) or layer‐by‐layer (LbL) layers are prepared by using polymer donor PM6 and non‐fullerene acceptor L8‐BO as main system fullerene PC 71 BM third component. power conversion efficiencies (PCEs) BHJ LbL increased from 17.10% 18.02% 17.20% 18.20% introducing into binary layer, respectively. situ UV–vis absorption spectra indicate that molecular aggregation crystallization process can be prolonged PM6:L8‐BO PM6/L8‐BO layer. orientation crystallinity optimized layers, which confirmed experimental results grazing incidence wide‐angle X‐ray scattering. This study demonstrates component used a regulator thus effectively improving performance OSCs.
Язык: Английский
Процитировано
16
ACS Applied Polymer Materials, Год журнала: 2024, Номер 6(4), С. 2223 - 2231
Опубликована: Фев. 14, 2024
In this work, three polymerized small-molecule acceptors (PSMAs) (namely, PBTP-α, PBTP-β, and PBTP-m) based on distinct building blocks are developed to investigate the influence of regioisomerism terminal group units (TCN-α TCN-β) physicochemical, photoelectric, photovoltaic properties PSMAs. Comparative analysis reveals that PBTP-α exhibited red-shifted absorption, enhanced intramolecular charge transfer effects, stronger crystallinity, denser molecular stacking compared regioregular PBTP-β regiorandom PBTP-m. By utilizing PM6 as polymer donor, PBTP-α-based all-polymer solar cell (all-PSC) achieves a higher power-conversion efficiency (PCE) 8.17% with PBTP-β- (5.99%) PBTP-m-based (6.16%) devices.
Язык: Английский
Процитировано
3
Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(23), С. 8188 - 8216
Опубликована: Янв. 1, 2024
This review highlights key strategies in structural engineering for achieving near-IR (NIR) optical absorption with conjugated polymers (NIR-CPs), and it details their utility various organic electronic device applications.
Язык: Английский
Процитировано
3
Angewandte Chemie, Год журнала: 2024, Номер 136(35)
Опубликована: Июнь 11, 2024
Abstract All‐polymer solar cells have experienced rapid development in recent years by the emergence of polymerized small molecular acceptors (PSMAs). However, strong chain entanglements polymer donors (P D s) and A decrease miscibility resulting mixtures, making it challenging to optimize blend morphology. Herein, we designed three P s, namely PBTPIC m ‐BDD, γ ‐BDD PBTPICF‐BDD, smartly using a BDD unit as copolymerize with different Y‐typed non‐fullerene (NF‐SMAs), thus achieving certain degree distortion giving system enough internal space reduce chains. Such effects increase chances being interspersed into acceptor material, which improve solubility between . The PBTPICF‐BDD displayed better PBQx‐TCl, leading well optimized As result, high power conversion efficiencies (PCEs) 17.50 % 17.17 were achieved for PBQx‐TCl : devices, respectively. With addition PYFT‐ o third component further extend absorption spectral coverage finely tune microstructures morphology, remarkable PCE 18.64 was realized finally.
Язык: Английский
Процитировано
3
Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(50)
Опубликована: Авг. 20, 2024
Abstract As the simplest oligomeric acceptors, dimerized acceptors (DAs) are easier to synthesize, and more importantly, they can retain good intermolecular interaction photovoltaic properties of their parent small‐molecule (SMAs). Nevertheless, currently most efficient DAs derived from banana‐shaped might suffer inferior device stability with high diffusion coefficients. Herein, we design synthesize two planar (DMT‐FH DMT‐HF) by bridging linear‐shaped M‐series SMAs a thiophene unit. The effects fluorination position on coefficients, power conversion efficiencies (PCEs) systematically studied. Our results suggest that DMT‐HF ending indanone groups shows enhanced interactions, improved PCE compared counterpart (DMT‐FH) central groups. Further optimization DMT‐HF‐based devices yields an outstanding 17.17 %, which is highest among all SMA‐based DAs. Notably, low coefficient (3.36×10 −24 cm 2 s −1 ) DMT‐HF, resulting retains over 93 % initial after 5000 h continuous heating at 85 °C, suggesting its excellent thermal stability. highlight importance for achieving stable polymer solar cells.
Язык: Английский
Процитировано
3
Chemistry - A European Journal, Год журнала: 2024, Номер unknown
Опубликована: Окт. 15, 2024
The properties of the active layer materials play a decisive role in determining power conversion efficiency organic solar cells (OSCs). Chlorophyll and its derivatives are abundant environmentally friendly functional molecular materials. Using density theory (DFT) time-dependent (TD-DFT), we have calculated absorption spectra their excited state based on optimized ground structures. It was found that bacteriochlorin exhibits superior structural properties, smaller energy gap hole reorganization energy, redshifted spectra, higher mobility compared to donor D18. This suggests properties. Comparative studies between o-AT-2Cl m-AT-2Cl showed had acceptor implying differences substitution positions can influence physicochemical non-fullerene acceptors (NFAs). Subsequently, six bulk heterojunctions (BHJs) were constructed by combining three donors with nonfused ring electron acceptors, m-AT-2Cl. bacteriochlorin-based BHJs performed well among them, BChl3/o-AT-2Cl BChl4/o-AT-2Cl having largest interfacial charge separation rate. results suggested composed NFAs improve OSCs' photovoltaic performance, providing feasible scheme for designing efficient OSCs.
Язык: Английский
Процитировано
3