Optimizing Phase Separation and Vertical Distribution via Molecular Design and Ternary Strategy for Organic Solar Cells with 19.5% Efficiency DOI
Yafei Wang, Shaoqing Zhang, Jianqiu Wang

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(5), P. 2420 - 2427

Published: April 28, 2024

Achieving finely tuned phase separation and vertical distribution within the photoactive layer is crucial for enhancing charge transport, thereby significantly influencing photovoltaic performance of organic solar cells (OSCs). In this study, a nonfullerene acceptor, denoted as HLG, designed synthesized by introducing hydrophobic 1,2,4,5-tetrafluoro-3-((2-ethylhexyl)oxy)benzene side chains. The fluorine-substituted functional groups endow HLG with higher surface energy, rendering it suitable utilization morphological regulator in PB2:BTP-eC9 blends. morphology study reveals that plays an important role formation favorable distribution. Benefiting from desirable morphology, PB2:HLG:BTP-eC9-based OSC demonstrates impressive power conversion efficiency (PCE) 19.5%. This introduces effective approach combines molecular design ternary strategy to optimize active simultaneously, leading significant improvements PCE OSCs.

Language: Английский

Stability of organic solar cells: toward commercial applications DOI
Pengfei Ding, Daobin Yang,

Shuncheng Yang

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(5), P. 2350 - 2387

Published: Jan. 1, 2024

Organic solar cells (OSCs) have attracted a great deal of attention in the field clean energy due to their advantages transparency, flexibility, low cost and light weight. Introducing them market enables seamless integration into buildings windows, while also supporting wearable, portable electronics internet-of-things (IoT) devices. With development photovoltaic materials optimization fabrication technology, power conversion efficiencies (PCEs) OSCs rapidly improved now exceed 20%. However, there is significant lack focus on material stability device lifetime, causing severe hindrance commercial applications. In this review, we carefully review important strategies employed improve over past three years from perspectives design engineering. Furthermore, analyze discuss current progress terms air, light, thermal mechanical stability. Finally, propose future research directions overcome challenges achieving highly stable OSCs. We expect that will contribute solving problem OSCs, eventually paving way for applications near future.

Language: Английский

Citations

112
Self-sustaining personal all-day thermoregulatory clothing using only sunlight DOI
Ziyuan Wang, Yiwen Bo, Peijia Bai

et al.

Science, Journal Year: 2023, Volume and Issue: 382(6676), P. 1291 - 1296

Published: Dec. 14, 2023

The human body must stay within a certain temperature range for comfort and safety. However, challenges thermoregulatory clothing exist harsh application scenarios, such as full day/night cycles, frigid polar regions, space travel. We developed flexible sustainable personal system by integrating organic photovoltaic (OPV) module to directly acquire energy from sunlight bidirectional electrocaloric (EC) devices. OPV-EC (OETC) can extend the thermal zone 22°-28°C 12.5°-37.6°C with fast thermoregulation rate. low consumption high efficiency of EC device allows 24 hours controllable dual-mode 12 input. This self-powered wearable platform has simple structure, compact design, efficiency, strong self-adaptability sole source.

Language: Английский

Citations

97
Perovskite–organic tandem solar cells DOI
Kai Oliver Brinkmann, Pang Wang, Felix Lang

et al.

Nature Reviews Materials, Journal Year: 2024, Volume and Issue: 9(3), P. 202 - 217

Published: Jan. 31, 2024

Language: Английский

Citations

73
Ductile Oligomeric Acceptor‐Modified Flexible Organic Solar Cells Show Excellent Mechanical Robustness and Near 18% Efficiency DOI

Qinrui Ye,

Zhenyu Chen, Daobin Yang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(44)

Published: Aug. 22, 2023

High power conversion efficiency (PCE) and mechanical robustness are key requirements for wearable applications of organic solar cells (OSCs). However, almost all highly efficient photoactive films comprising polymer donors (PD ) small molecule acceptors (SMAs) mechanically brittle. In this study, (PCE = 17.91%) robust (crack-onset strain [COS] 11.7%) flexible OSCs fabricated by incorporating a ductile oligomeric acceptor (DOA) into the PD :SMA system, representing most to date. The photophysical, mechanical, photovoltaic properties D18:N3 with different DOAs characterized. By introducing DOA DOY-C4 longer alkyl linker lower polymerization, D18:N3:DOY-C4-based exhibit significantly higher PCE (17.91%) 50% COS (11.7%) than D18:N3-based device 17.06%, 7.8%). based on D18:N3:DOY-C4 retain 98% initial after 2000 consecutive bending cycles, showing greater stability reference (maintaining 89% PCE). After careful investigation, it is hypothesized that enhancement in mainly due formation tie chains or entanglement ternary blend films. These results demonstrate have great potential achieving high-performance OSCs.

Language: Английский

Citations

69
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
Electronic Configuration Tuning of Centrally Extended Non‐Fullerene Acceptors Enabling Organic Solar Cells with Efficiency Approaching 19 % DOI Open Access
Tainan Duan,

Wanying Feng,

Yulu Li

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(42)

Published: Aug. 26, 2023

In the molecular optimizations of non-fullerene acceptors (NFAs), extending central core can tune energy levels, reduce nonradiative loss, enhance intramolecular (donor-acceptor and acceptor-acceptor) packing, facilitate charge transport, improve device performance. this study, a new strategy was employed to synthesize featuring conjugation-extended electron-deficient cores. Among these, acceptor CH-BBQ, embedded with benzobisthiadiazole, exhibited an optimal fibrillar network morphology, enhanced crystallinity, improved generation/transport in blend films, leading power conversion efficiency 18.94 % for CH-BBQ-based ternary organic solar cells (OSCs; 18.19 binary OSCs) owing its delicate structure design electronic configuration tuning. Both experimental theoretical approaches were used systematically investigate influence on properties The modulation paves pathway engineering NFAs, propelling relevant research forward.

Language: Английский

Citations

63
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

62
Designing A–D–A Type Fused‐Ring Electron Acceptors with a Bulky 3D Substituent at the Central Donor Core to Minimize Non‐Radiative Losses and Enhance Organic Solar Cell Efficiency DOI
Hao Lu,

Dawei Li,

Wenlong Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(33)

Published: May 29, 2024

Designing and synthesizing narrow band gap acceptors that exhibit high photoluminescence quantum yield (PLQY) strong crystallinity is a highly effective, yet challenging, approach to reducing non-radiative energy losses (▵E

Language: Английский

Citations

57
Step-by-Step Modulation of Crystalline Features and Exciton Kinetics for 19.2% Efficiency Ortho-Xylene Processed Organic Solar Cells DOI Creative Commons
Bosen Zou, Weiwei Wu, Top Archie Dela Peña

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 16(1)

Published: Nov. 23, 2023

Abstract With plenty of popular and effective ternary organic solar cells (OSCs) construction strategies proposed applied, its power conversion efficiencies (PCEs) have come to a new level over 19% in single-junction devices. However, previous studies are heavily based chloroform (CF) leaving behind substantial knowledge deficiencies understanding the influence solvent choice when introducing third component. Herein, we present case where newly designed asymmetric small molecular acceptor using fluoro-methoxylated end-group modification strategy, named BTP-BO-3FO with enlarged bandgap, brings different morphological evolution performance improvement effect on host system PM6:BTP-eC9, processed by CF ortho-xylene ( o -XY). detailed analyses supported series experiments, best PCE 19.24% for green solvent-processed OSCs is found be fruit finely tuned crystalline ordering general aggregation motif, which furthermore nourishes favorable charge generation recombination behavior. Likewise, can achieved replacing spin-coating blade coating active layer deposition. This work focuses commonly met yet frequently ignored issues building blends demonstrate cutting-edge device performance, hence, will instructive other OSC works future.

Language: Английский

Citations

56
Device Performance of Emerging Photovoltaic Materials (Version 4) DOI Creative Commons
Osbel Almora, Carlos I. Cabrera, Sule Erten‐Ela

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 14(4)

Published: Dec. 15, 2023

Abstract Following the 3rd release of “Emerging PV reports” , best achievements in performance emerging photovoltaic (e‐PV) devices diverse e‐PV research subjects are summarized, as reported peer‐reviewed articles academic journals since August 2022. Updated graphs, tables, and analyses provided with several parameters, such power conversion efficiency, open‐circuit voltage, short‐circuit current density, fill factor, light utilization stability test energy yield. These parameters presented a function bandgap average visible transmittance for each technology application, put into perspective using, example, detailed balance efficiency limit. The 4th installment discusses “PV emergence” classification respect to generations” waves” highlights latest device progress multijunction flexible photovoltaics. Additionally, Dale‐Scarpulla's plots efficiency‐effort terms cumulative publication count also introduced.

Language: Английский

Citations

46