19.36% Efficiency Organic Solar Cells Based on Low‐Cost Terpolymer Donors with Simple Molecular Structures DOI
Xin Wu, Xixi Zhang, J.B. Zhang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 19, 2024

Abstract Low cost and high performance are key elements for the industrialization of organic solar cells (OSCs). In view this, developing highly‐efficient photovoltaic molecules with simple chemical structure is one most effective countermeasures. Herein, three simple‐structure terpolymers PTQ12‐5, PTQ12‐10, PTQ12‐15 designed synthesized, by embedding difluoro‐substituted bithiophene (2T‐2F) unit into backbone low‐cost high‐efficiency polymer PTQ10. The synthesis contains only two‐step synthetic routes over 85% yields from cheap raw compounds, thus exhibiting distinctly characteristic. Remarkably, PTQ12‐5 shows significantly higher absorbance coefficient hole mobility than Consequently, PTQ12‐5‐based OSCs more efficient exciton dissociation charge transfer, suppressed carrier recombination, tighter molecular π‐π stacking, faster balanced transport, demonstrates a improved efficiency 18.77% that PTQ10‐based device (18.03%). Moreover, an outstanding 19.36% achieved in ternary further modulating energy level alignment blending features photoactive molecules, which highest based on polymers to date. This work has significant implications guiding design high‐performance materials.

Language: Английский

19.7% efficiency binary organic solar cells achieved by selective core fluorination of nonfullerene electron acceptors DOI Creative Commons
Kerui Liu, Yuanyuan Jiang, Guangliu Ran

et al.

Joule, Journal Year: 2024, Volume and Issue: 8(3), P. 835 - 851

Published: Jan. 30, 2024

Language: Английский

Citations

149
Dimerized small-molecule acceptors enable efficient and stable organic solar cells DOI Creative Commons

Cheng Sun,

Jin‐Woo Lee, Changyeon Lee

et al.

Joule, Journal Year: 2023, Volume and Issue: 7(2), P. 416 - 430

Published: Feb. 1, 2023

Language: Английский

Citations

145
Linker Engineering of Dimerized Small Molecule Acceptors for Highly Efficient and Stable Organic Solar Cells DOI
Jin‐Woo Lee,

Cheng Sun,

Changyeon Lee

et al.

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(3), P. 1344 - 1353

Published: Feb. 8, 2023

High power conversion efficiency (PCE) and long-term stability are important requirements for commercialization of organic solar cells (OSCs). In this study, we demonstrate efficient (PCE = 18.60%) stable (t80% lifetime > 4000 h) OSCs by developing a series dimerized small-molecule acceptors (DSMAs). We prepared three different DSMAs (DYT, DYV, DYTVT) using linkers (i.e., thiophene, vinylene, thiophene– vinylene– thiophene), to connect their two Y-based building blocks. find that the crystalline properties glass transition temperature (Tg) can be systematically modulated linker selection. A DYV-based OSC achieves highest PCE (18.60%) among DSMA-based owing appropriate backbone rigidity leading an optimal blend morphology high electron mobility. Importantly, also demonstrates excellent operational under 1-sun illumination, i.e., t80% 4005 h.

Language: Английский

Citations

98
Unveiling the Morphological and Physical Mechanism of Burn‐in Loss Alleviation by Ternary Matrix Toward Stable and Efficient All‐Polymer Solar Cells DOI Creative Commons
Ruijie Ma, Qunping Fan, Top Archie Dela Peña

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(18)

Published: Feb. 10, 2023

All-polymer solar cells (All-PSCs) are considered the most promising candidate in achieving both efficient and stable organic photovoltaic devices, yet field has rarely presented an in-depth understanding of corresponding device stability while efficiency is continuously boosted via innovation polymer acceptors. Herein, a ternary matrix built for all-PSCs with optimized morphology, improved film ductility importantly, better operational than its parental binary counterparts, as platform to study underlying mechanism. The target system PQM-Cl:PTQ10:PY-IT (0.8:0.2:1.2) exhibits alleviated burn-in loss morphology under light soaking, which supports promoted lifetime. comprehensive characterizations fresh light-soaked active layers lead clear illustration opposite morphological physical degradation direction PQM-Cl PTQ10, thus resulting delicate balance at optimal system. Specifically, enlarging tendency shrinking preference PTQ10 terms phase separation leads their mixing phase; hole transfer kinetics PQM-Cl:PY-IT host stabilized by incorporating PTQ10. This work succeeds reaching deep insight into all-PSC's promotion rational design, booms prospect gaining high-performance all-PSCs.

Language: Английский

Citations

90
Trimerized small-molecule acceptors enable high-performance organic solar cells with high open-circuit voltage and prolonged life-time DOI Creative Commons
Jin‐Woo Lee,

Cheng Sun,

Tan Ngoc‐Lan Phan

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(8), P. 3339 - 3349

Published: Jan. 1, 2023

We report a new trimer acceptor (TYT) composed of three Y-based molecules connected by electron-donating spacers. The TYT enables high-performance and stable organic solar cell (OSC) with t 80% lifetime >8000 h under 1 sun illumination.

Language: Английский

Citations

76
Physical insights into non-fullerene organic photovoltaics DOI
Jiayu Wang, Yuan Xie, Kai Chen

et al.

Nature Reviews Physics, Journal Year: 2024, Volume and Issue: 6(6), P. 365 - 381

Published: April 15, 2024

Language: Английский

Citations

64
Tunable Donor Aggregation Dominance in a Ternary Matrix of All‐Polymer Blends with Improved Efficiency and Stability DOI
Ruijie Ma, Hongxiang Li, Top Archie Dela Peña

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(15)

Published: July 7, 2023

Abstract Using two structurally similar polymer acceptors in constructing high‐efficiency ternary all‐polymer solar cells is a widely acknowledged strategy; however, the focus thus far has not been on how acceptor(s) would tune aggregation of donors, and furthermore film morphology device performance (efficiency stability). Herein, it reported that matching celebrity acceptor PY‐IT donor PBQx‐TCl results enhanced H ‐ PBQx‐TCl, which can be finely tuned by controlling amount second PY‐IV. Consequently, efficiency‐optimized PY‐IV weight ratio (0.2/1.2) leads to state‐of‐the‐art power conversion efficiency 18.81%, wherein light‐illuminated operational stability also along with well‐protected thermal stability. Such enhancements stabilities attributed optimization desired glass transition temperature target active layer based comprehensive characterization. In addition being high‐power case for cells, these are successful attempt using combined toward optimal morphology, provides theoretical basis construction other types organic photovoltaics beyond cells.

Language: Английский

Citations

61
What We have Learnt from PM6:Y6 DOI Creative Commons
Safa Shoaee, Hoang Mai Luong, Jiage Song

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(20)

Published: Aug. 25, 2023

Abstract Over the past three years, remarkable advancements in organic solar cells (OSCs) have emerged, propelled by introduction of Y6—an innovative A‐DA'D‐A type small molecule non‐fullerene acceptor (NFA). This review provides a critical discussion current knowledge about structural and physical properties PM6:Y6 material combination relation to its photovoltaic performance. The design principles PM6 Y6 are discussed, covering charge transfer, transport, recombination mechanisms. Then, authors delve into blend morphology degradation mechanisms before considering commercialization. state art is presented, while also discussing unresolved contentious issues, such as energetics, pathways free generation, role triplet states recombination. As such, this aims provide comprehensive understanding potential for further development field cells. By addressing both successes challenges associated with system, contributes ongoing research efforts toward achieving more efficient stable

Language: Английский

Citations

58
Regiospecific Incorporation of Acetylene Linker in High‐Electron Mobility Dimerized Acceptors for Organic Solar Cells with High Efficiency (18.8%) and Long 1‐Sun Lifetime (> 5000 h) DOI

Cheng Sun,

Jin‐Woo Lee, Zhengping Tan

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(34)

Published: July 26, 2023

Abstract The commercialization of organic solar cells (OSCs) requires both high power conversion efficiency (PCE) and long‐term stability. However, the lifetime OSCs containing small‐molecule acceptors (SMA) should be significantly enhanced. In this study, a series planarity‐controlled is developed, electron mobility dimerized SMAs (DSMAs) realize with high‐performance (PCE = 18.8%) high‐stability ( t 80% 5380 h under 1‐Sun illumination). An acetylene linker planar triple bond designed for dimerization SMA units to afford backbone planarity necessary achieve crystallinity mobility. To further engineer molecular conformation DSMAs, different regioisomers Y‐based are yield three regioisomerically distinct denoted as DYA‐I, DYA‐IO, DYA‐O, respectively. It found that crystallinity, mobility, glass transition temperature DSMAs gradually increase in order which, turn, enhance PCE device stability resulting OSCs; DYA‐O 16.45% 3337 h) < DYA‐IO 17.54% 4255 DYA‐I 18.83% h).

Language: Английский

Citations

51
Easy Isomerization Strategy for Additives Enables High‐Efficiency Organic Solar Cells DOI
Yufei Wang, Zezhou Liang,

Xiangfei Liang

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(22)

Published: April 27, 2023

Abstract The morphological features of the active layer has always been an important factor limiting efficiency organic solar cells (OSCs). Although halogen‐based additives capable forming non‐covalent bonds with molecules can effectively adjust morphology layer, inner mechanism positional isomerization on crystallization kinetics bulk heterojunction ignored, which hinders further development this technique. Herein, a new additive‐assisted optimization strategy for high‐efficiency OSCs based three isomeric is proposed, have different sites two bromine substituents benzene ring. results demonstrate that symmetrically structured smallest dipole moment, lowest steric hindrance and most uniformly distributed electrostatic potential, form more suitable interactions acceptor, resulting in reasonable molecular spatial distribution better π–π stacking behavior. For other non‐fullerene systems, additive also shows best effect optimizing aggregation stacking. This work provides guidance screening designing excellent improvement capability expected to profound influence increasing without adopting possessing complex conjugated backbones branched chains.

Language: Английский

Citations

50