Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 438, P. 135384 - 135384
Published: Feb. 22, 2022
Language: Английский
Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 438, P. 135384 - 135384
Published: Feb. 22, 2022
Language: Английский
Science China Chemistry, Journal Year: 2022, Volume and Issue: 65(8), P. 1457 - 1497
Published: May 26, 2022
Language: Английский
Citations
258Journal of Materials Chemistry A, Journal Year: 2021, Volume and Issue: 9(28), P. 15684 - 15695
Published: Jan. 1, 2021
A time and money efficient machine learning assisted design of non-fullerene small molecule acceptors for P3HT based organic solar cells is reported. Green solvents are also selected using predicted Hansen solubility parameters.
Language: Английский
Citations
184Advanced Energy Materials, Journal Year: 2021, Volume and Issue: 11(47)
Published: Oct. 29, 2021
Abstract Side‐chain modifications of non‐fullerene acceptors (NFAs) are essential for harvesting their full potential in organic solar cells (OSC). Here, an effective alkyl‐chain‐branching approach the Y‐series NFAs flanking meta‐substituted phenyl side groups at outer positions is demonstrated. Compared to BTP‐4F‐PC6 with linear m ‐hexylphenyl chains, two new named BTP‐4F‐P2EH and BTP‐4F‐P3EH developed bulkier alkyl chains branched β γ positions, respectively. These result altered molecular packing afford higher open‐circuit voltage devices. Despite blue‐shifted absorption branched‐chain NFAs, blends PBDB‐T‐2F enable improved short‐circuit current density corresponding devices owing more suitable phase separation better exciton dissociation. Consequently, OSCs based on yield enhanced device performance 18.22% 17.57%, respectively, outperforming BTP‐4F‐PC6‐based ones (17.22%). results highlight that side‐chain branching design has great optimizing properties promoting photovoltaic performance.
Language: Английский
Citations
144Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(41)
Published: July 27, 2022
Halogenation of terminal acceptors has been shown to give dramatic improvements in power conversion efficiencies (PCEs) organic solar cells (OSCs). Similar significant results could be expected from the halogenation central units state-of-the-art Y-series acceptors. Herein, a pair acceptors, termed CH6 and CH4, featuring conjugation-extended phenazine unit with without fluorination, have synthesized. The fluorinated enhanced molecular interactions crystallinity, superior fibrillar network morphology improved charge generation transport blend films, thus affording higher PCE 18.33 % for CH6-based binary OSCs compared 16.49 non-fluorinated CH4. new site offers further opportunities structural optimization molecules afford better-performed reveals effectiveness fluorination on units.
Language: Английский
Citations
139Science China Chemistry, Journal Year: 2022, Volume and Issue: 65(7), P. 1362 - 1373
Published: May 6, 2022
Language: Английский
Citations
132Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(8), P. 3519 - 3533
Published: Jan. 1, 2022
The diverse molecular stacking tuned by peripheral halogens in non-fullerene acceptors (NFAs) significantly affects the physicochemical properties, film morphologies and thus power conversion efficiencies (PCEs) of organic solar cells (OSCs).
Language: Английский
Citations
115Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(4), P. 1773 - 1782
Published: Jan. 1, 2023
Efficient 3D NFAs through central unit connection blaze a new trail in further molecular structural optimization of state-of-the-art NFAs.
Language: Английский
Citations
99Journal of Materials Chemistry A, Journal Year: 2022, Volume and Issue: 10(35), P. 17968 - 17987
Published: Jan. 1, 2022
The fundamental principles of the molecular design Y-series NFAs (A–DA′D–A) are described, together with their achievements, comprehension, and impact on photoelectric characteristics, photovoltaic performance, film morphology.
Language: Английский
Citations
58Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(46)
Published: Sept. 20, 2022
Central π-core engineering of non-fullerene small molecule acceptors (NF-SMAs) is effective in boosting the performance organic solar cells (OSCs). Especially, selenium (Se) functionalization NF-SMAs considered a promising strategy but structure-performance relationship remains unclear. Here, we synthesize two isomeric alkylphenyl-substituted selenopheno[3,2-b]thiophene-based named mPh4F-TS and mPh4F-ST with different substitution positions, contrast them thieno[3,2-b]thiophene-based analogue, mPh4F-TT. When placing Se atoms at outer positions π-core, shows most red-shifted absorption compact molecular stacking. The PM6 : devices exhibit excellent absorption, high charge carrier mobility, reduced energy loss. Consequently, achieves more balanced photovoltaic parameters yields an efficiency 18.05 %, which highlights that precisely manipulating practicable way toward high-efficiency OSCs.
Language: Английский
Citations
47Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(3), P. 1277 - 1290
Published: Jan. 1, 2023
The introduction of halogen atoms in the donor molecules organic solar cells leads to a decrease reorganization energy, which turn results reduced non-radiative voltage losses and an improved open-circuit devices.
Language: Английский
Citations
30