Through an Energy Lens DOI
Manmeet Kaur Arora, Sahil Lal, Bhupinder Singh

et al.

Practice, progress, and proficiency in sustainability, Journal Year: 2024, Volume and Issue: unknown, P. 320 - 343

Published: July 26, 2024

Energy must be at the core of impact if we are to address 17 SDGs. The policy brief seeks provide insights and suggest recommendations on some key levers that governments can use align energy policies with SDG objectives, including recent cross-sectoral efforts, in order accelerate sustainable development across all three dimensions higher pace towards 2030. careful account UN briefs academic literature suggests several vital for shaping action as a driver Unlocking this potential demands political will, multi-stakeholder partnerships, systems perspective policy-making. 2030 Agenda presents an unprecedented chance integrate cross-cutting nature mainstream objectives.

Language: Английский

All-polymer solar cells with 19% efficiency via introducing pincer-shaped non-covalent bond interactions DOI
Jianxiao Wang, Yonghai Li, Chenyu Han

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(12), P. 4216 - 4227

Published: Jan. 1, 2024

Pincer-shaped non-covalent bond interactions are introduced between a small-molecule additive and polymer acceptor, effectively improving the photovoltaic performance mechanical stability of all-polymer solar cells.

Language: Английский

Citations

27
The role of interfacial donor–acceptor percolation in efficient and stable all-polymer solar cells DOI Creative Commons
Zhen Wang, Yu Guo, Xianzhao Liu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 8, 2024

Abstract Polymerization of Y6-type acceptor molecules leads to bulk-heterojunction organic solar cells with both high power-conversion efficiency and device stability, but the underlying mechanism remains unclear. Here we show that exciton recombination dynamics polymerized acceptors (Y6-PAs) strongly depends on degree aggregation. While fast rate in aggregated Y6-PA competes electron-hole separation at donor–acceptor (D–A) interface, much-suppressed dispersed is sufficient allow efficient free charge generation. Indeed, our experimental results theoretical simulations reveal Y6-PAs have larger miscibility donor polymer than small molecular acceptors, leading D–A percolation effectively prevents formation aggregates interface. Besides enabling generation efficiency, interfacial also improves thermodynamic stability blend morphology, as evident by reduced “burn-in” loss upon illumination.

Language: Английский

Citations

18
The Phase Separation Control in All‐Polymer Solar Cells DOI Creative Commons
Qiuju Liang, Zongcheng Miao, Xingpeng Liu

et al.

SusMat, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

ABSTRACT All‐polymer solar cells (all‐PSCs) are of interest owing to their unique advantages, including remarkably improved device stability and exceptional mechanical stretchability. Over recent years, there has been a notable increase in the power conversion efficiency (PCE) all‐PSCs, largely attributed advancements morphology control active layer. Notably, domain size is paramount importance as it impacts critical factors such exciton dissociation, charge transport, collection. However, low glass transition temperature conjugated polymers, coupled with minimal change mixing entropy, often results an excessive degree phase separation. Consequently, essential comprehend evolution separation develop strategies regulate size. In this review, we elucidate key parameters that contribute enhancement present qualitative quantitative characterization techniques for Building on foundation, introduce principles regulating sizes, encompassing crystallinity, miscibility, molecular conformation from thermodynamic perspective, well film‐forming kinetics crystallization sequence kinetic perspective. Lastly, offer insights into current challenges potential future prospects all‐PSCs.

Language: Английский

Citations

3
High‐Performance Photoactive Polymers: Innovations in Ternary Polymerization for Solar Applications DOI Open Access

Yu Fang,

Bin Huang,

Xiaoping Wang

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 2, 2025

Abstract In recent years, polymer solar cells (PSCs) have achieved rapid progress, with power conversion efficiencies (PCEs) reaching up to 20.25%, driven by significant advancements in device fabrication and active‐layer materials. The ternary polymerization strategy has proven be a straightforward effective approach for developing high‐performance photoelectric polymers incorporating third monomer into the backbone. This incorporation effectively optimizes intrinsic properties, including UV–vis absorption, energy levels, solubility, crystallinity, morphology, charge transfer, mechanical robustness, batch‐to‐batch reproducibility, stability. review highlights latest designing photoactive copolymers (both donors acceptors), particular focus on stability, potential applications commercial development. aim is provide valuable guidance development of materials using strategy.

Language: Английский

Citations

2
Delayed Crystallization Kinetics Allowing High‐Efficiency All‐Polymer Photovoltaics with Superior Upscaled Manufacturing DOI
Tianyi Chen,

Xiangjun Zheng,

Di Wang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(3)

Published: Sept. 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

Language: Английский

Citations

41
18.6% Efficiency All‐Polymer Solar Cells Enabled by a Wide Bandgap Polymer Donor Based on Benzo[1,2‐d:4,5‐d′]bisthiazole DOI Open Access

Peixi Wu,

Yuwei Duan, Yinfeng Li

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(3)

Published: Sept. 28, 2023

The limited selection of wide bandgap polymer donors for all-polymer solar cells (all-PSCs) is a bottleneck problem restricting their further development and remains poorly studied. Herein, new polymer, namely PBBTz-Cl, designed synthesized by bridging the benzobisthiazole acceptor block chlorinated benzodithiophene donor with thiophene units application as an electron in all-PSCs. PBBTz-Cl not only possesses deep energy levels but also displays strong absorption, high-planar structure, good crystallinity, making it promising candidate organic cells. When paired narrow PY-IT, fibril-like morphology forms, which facilitates exciton dissociation charge transport, contributing to power conversion efficiency (PCE) 17.15% corresponding Moreover, when introducing another crystalline BTP-2T2F into PBBTz-Cl:PY-IT host blend, absorption ditch range 600-750 nm filled, blend optimized trap density reducing. As result, ternary all-PSCs achieve significantly improved PCE 18.60%, among highest values date.

Language: Английский

Citations

41
High Miscibility‐Induced Reduction of Trap Density in All‐Polymer Solar Cells Using Hybrid Cyclohexyl‐Hexyl Side Chains DOI

Fengbo Sun,

Xunchang Wang,

Ming Wan

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(40)

Published: Aug. 30, 2023

Abstract Reducing the trap density within organic solar cells is of vital importance to realize high power conversion efficiency (PCE); however, research focusing on this aspect limited in all‐polymer (All‐PSCs). In work, it found that can be dramatically reduced by simultaneously obtaining miscibility donor and acceptor ordered packing blend films through substituting ethylhexyl with hybrid cyclohexyl‐hexyl side chains design polymer donor. D18‐ChCl has a slightly lower aggregation behavior relative D18‐Cl counterpart, but reveals synchronously higher crystallinity PYF‐T‐o. Such morphology evolution positively affects electronic properties device—prolongs carrier lifetime, facilitates exciton dissociation, lowers energy disorder. As result, All‐PSC devices based exhibited remarkable PCE 17.1%, low 2.65 × 10 15 cm −3 , disorder 47 meV as well outstanding stability mechanical durability. This result demonstrates alkyl engineering delicately improves miscibility, drives density, refines device performance, which brings vibrancy field.

Language: Английский

Citations

34
Regulating Phase Separation Kinetics for High‐Efficiency and Mechanically Robust All‐Polymer Solar Cells DOI
Jianqiu Wang, Yafei Wang, Kaihu Xian

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(1)

Published: Aug. 4, 2023

All-polymer solar cells (all-PSCs) possess excellent operation stability and mechanical robustness than other types of organic cells, thereby attracting considerable attention for wearable flexible electron devices. However, the power conversion efficiencies (PCEs) all-PSCs are still lagging behind those small-molecule-acceptor-based systems owing to limitation photoactive materials unsatisfactory blend morphology. In this work, a novel terpolymer, denoted as PBDB-TFCl (poly4,8-bis(5-(2-ethylhexyl)-4-fluorothiophen-2-yl)benzo[1,2-b:4,5-b″]dithiophene-1,3-bis(2-ethylhexyl)-5,7-di(thiophen-2-yl)-4H,8H-benzo[1,2-c:4,5-c″]dithiophene-4,8-dione-4,8-bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene), is used an donor coupled with ternary strategy optimize performance all-PSCs. The addition PBDB-TCl unit deepens highest occupied molecular orbital energy level, reducing voltage losses. Moreover, introduction guest (D18-Cl) effectively regulates phase-transition kinetics PBDB-TFCl:D18-Cl:PY-IT during film formation, leading ideal size aggregations enhanced crystallinity. devices exhibit PCE 18.6% (certified 18.3%), judged value so far obtained Besides, based on active layer, manufactured 36 cm

Language: Английский

Citations

32
19.32% Efficiency Polymer Solar Cells Enabled by Fine‐Tuning Stacking Modes of Y‐Type Molecule Acceptors: Synergistic Bromine and Fluorine Substitution of the End Groups DOI
Min Deng, Xiaopeng Xu, Yuwei Duan

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(11)

Published: Dec. 15, 2023

Abstract The success of Y6‐type nonfullerene small molecule acceptors (NF‐SMAs) in polymer solar cells (PSCs) can be attributed to their unique honeycomb stacking style, which leads favorable thin‐film morphologies. intermolecular interactions related the crystallization tendency these NF‐SMAs is closely governed by electron accepting end groups. For example, high performance Y6 derivative L8‐BO (BTP‐4F) presents three types modes contrast two Y6. Hence, it ultimately interesting obtain more insight on packing properties and preferences influenced chemical modifications such as group engineering. This work designs synthesizes asymmetric symmetric derivatives with brominated groups explores various modes. BTP‐3FBr displays an optimized thin film morphology, leading a decent power conversion efficiency (PCE) 18.34% binary devices top PCE 19.32% ternary containing 15 wt% IDIC second acceptor.

Language: Английский

Citations

30
Over 18% efficiency ternary all-polymer solar cells with high photocurrent and fill factor DOI Creative Commons

Jiali Song,

Chao Li,

Jiawei Qiao

et al.

Matter, Journal Year: 2023, Volume and Issue: 6(5), P. 1542 - 1554

Published: March 23, 2023

Language: Английский

Citations

28