Science China Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 18, 2024
Язык: Английский
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Март 5, 2025
Abstract Organic photovoltaics (OPV) are a promising solar cell technology well‐suited to mass production using roll‐to‐roll processes. The efficiency of lab‐scale cells has exceeded 20% and considerable attention is currently being given understanding minimizing the remaining loss mechanisms preventing higher efficiencies. While recent improvements partly owed reducing non‐radiative recombination losses at open circuit, low fill factor ( FF ) due significant transport resistance becoming Achilles heel OPV. term refers voltage light intensity‐dependent charge collection in low‐mobility materials. In this perspective, it demonstrated that even highest organic (OSCs) reported to‐date have performance can be attributed lead high losses. A closer look material properties influencing provided. How experimentally characterize quantify described by providing easy follow instructions. Furthermore, causes theory behind detailed. particular, relevant figures merit (FoMs) different viewpoints on integrated. Finally, we outline strategies followed minimize these future cells.
Язык: Английский
Процитировано
0
Nano Energy, Год журнала: 2025, Номер unknown, С. 111008 - 111008
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Advanced Materials, Год журнала: 2025, Номер unknown
Опубликована: Апрель 26, 2025
Abstract Recently, benzene‐based solid additives (BSAs) have emerged as pivotal components in modulating the morphology of blend film organic solar cells (OSCs). However, since almost all substituents on BSAs are weak electron‐withdrawing groups and contain halogen atoms, study with non‐halogenated strong has received little attention. Herein, an additive strategy is proposed, involving incorporation benzene ring. An effective BSA, 4‐nitro‐benzonitrile (NBN), selected to boost efficiency devices. The results demonstrate that NBN‐treated device exhibits enhanced light absorption, superior charge transport performance, mitigated recombination, more optimal compared additive‐free OSC. Consequently, D18:BTP‐eC9+NBN‐based binary D18:L8‐BO:BTP‐eC9+NBN‐based ternary OSC processed by solvent achieved outstanding efficiencies 20.22% 20.49%, respectively. Furthermore, universality NBN also confirmed different active layer systems. In conclusion, this work demonstrates introduction electron‐absorbing moieties ring a promising approach design BSAs, which can tune achieve highly efficient devices, certain guiding significance for development BSAs.
Язык: Английский
Процитировано
0
Molecules, Год журнала: 2024, Номер 29(22), С. 5369 - 5369
Опубликована: Ноя. 14, 2024
Organic/silicon hybrid solar cells have attracted much interest due to their cheap fabrication process and simple device structure. A category of organic substances, Dibenzothiophene–Spirobifluorene–Dithiophene (DBBT-mTPA-DBT), comprises dibenzo [d,b] thiophene 3-(3-methoxyphenyl)-6-(4-methoxyphenyl)-9H-Carbazole, which function as electron donors. In contrast, methanone is an acceptor, with ∆Est 3.19 eV. This work focused on based the guest–host phenomena DBBT-mTPA-DBT CBP. Using a Si/poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT: PSS) cell ultra-thin Dibenzothiophene–Spirobifluorene–Dithienothiophene (DBBT-mTPA-DBT) interlayer between Si Al led PCE 17.5 ± 2.5%. The substantially improved Si/Al interface, reducing contact resistance from 6.5 × 10⁻1 Ω·cm2 3.5 10⁻2 Ω·cm2. improvement increases transport efficiency silicon aluminum reduces carrier recombination. containing DBBT-mTPA-DBT/Al double-layer cathode shows 10.85% increase in power conversion relative standard device.
Язык: Английский
Процитировано
2
Materials Science and Engineering R Reports, Год журнала: 2024, Номер 162, С. 100879 - 100879
Опубликована: Ноя. 18, 2024
Язык: Английский
Процитировано
2
Advanced Science, Год журнала: 2024, Номер unknown
Опубликована: Дек. 24, 2024
Nonfullerene acceptors are critical in advancing the performance of organic solar cells. However, unfavorable morphology and low photon-to-electron conversion acceptor range continue to limit photocurrent generation overall device performance. Herein, benzoic anhydride, a low-cost polar molecule with excellent synergistic properties, is introduced combination traditional additive 1-chloronaphthalene optimize aggregation nonfullerene acceptors. This dual approach precisely modulates various acceptors, significantly enhancing Notably, method induces formation fine fibers dense polymorph structures BTP-base derivatives, achieving an optimal balance between exciton dissociation charge collection active layers. As result, external quantum efficiency devices markedly improved wavelength 700-850 nm. Ultimately, power efficiencies 18.27% 19.59% achieved for comprising PM6:Y6 PM6:L8-BO, respectively. The results reveal convenient effective control improve photovoltaic cells, paving way more efficient practical technologies.
Язык: Английский
Процитировано
2
Science China Materials, Год журнала: 2024, Номер unknown
Опубликована: Дек. 18, 2024
Язык: Английский
Процитировано
2