Suppressing Nongeminate Charge Recombination Triggers 19.5% Efficiency Bilayer Organic Solar Cells DOI

Lixing Tan,

Zhenmin Zhao, Sein Chung

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: unknown, P. 376 - 384

Published: Dec. 25, 2024

Bilayer organic solar cells, composed of a donor and acceptor layer, provide independent optimization each layer to enhance the photovoltaic performance. However, power conversion efficiency remains lower than that bulk heterojunction cells. Herein, we focus on suppressing nongeminate charge recombination by tuning layer's morphology with fullerene derivatives improve performance bilayer We use PM6/Y6 as model systems incorporate fullerenes such PC71BM into aggregation, crystallinity, increase electron mobility, reduce trap density. Consequently, devices based PM6/BTP-eC9 PM6/L8-BO achieved efficiencies 18.0% 19.5%, respectively, approaching The improved fill factor results from reduced bimolecular suppressed trap-assisted recombination, offering insights optimizing active designing high-mobility materials for efficient

Language: Английский

Over 18.2% efficiency of layer–by–layer all–polymer solar cells enabled by homoleptic iridium(III) carbene complex as solid additive DOI
Hang Zhou, Yingjie Sun, Miao Zhang

et al.

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(18), P. 2862 - 2869

Published: July 15, 2024

Language: Английский

Citations

31
Narrowband Organic Photodetectors: From Fundamentals to Prospects DOI

Xingchao Zhao,

Jian Wang, Ming Liu

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(31)

Published: Aug. 27, 2024

Abstract Organic photodetectors (OPDs) have achieved rapid development due to the emergence of organic semiconducting materials with high absorption coefficient and tunable optical bandgap, as well progress in device physics engineering. The working mechanism fundamental parameters OPDs are briefly introduced. Some smart strategies for realizing performance photovoltaic type narrowband (PV‐NB‐OPDs) photomultiplication (PM‐NB‐OPDs) comprehensively reviewed. recent PV‐NB‐OPDs PM‐NB‐OPDs is systematically introduced from fundamentals prospects, exhibiting colorful application potential full‐color imaging, spectroscopic photodetection, medical monitoring, communication, which may promote their applications.

Language: Английский

Citations

27
Cascaded Energy and Charge Transfer Synergistically Prompting 18.7% Efficiency of Layered Organic Solar Cells with 1.48 eV Bandgap DOI Open Access
Lu Zhang, Hang Zhou, Yongchao Xie

et al.

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

Published: Jan. 2, 2025

Abstract Series of layer‐by‐layer organic solar cells (LOSCs) are constructed by sequentially spin‐coating donor layer and acceptor layers. A champion power conversion efficiency (PCE) 18.79% is achieved from the LOSCs with PBQx‐TCl/ITIC/PY‐DT as active layers, which should be one top values among OSCs optical bandgap over 1.48 eV. The middle material ITIC has a complementary photon harvesting range PBQx‐TCl PY‐DT, leading to enhanced Meanwhile, can play vital role in energy charge transfer relay increase exciton utilization transport, confirmed varied FFs normal or inverted ITIC/PY‐DT PY‐DT/ITIC Over 7% PCE improvement employing form cascaded This work may provide an efficient strategy for improving performance LOSCs.

Language: Английский

Citations

9
Controlling the Third Component Distribution Toward High‐Efficient Ternary Organic Solar Cells DOI Open Access
Yutong Zhang, Yan Zhang, Xingpeng Liu

et al.

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

Published: March 4, 2025

Abstract Ternary organic solar cells (T‐OSCs) based on energy transfer can significantly boost the light absorption efficiency, thereby improving their power conversion efficiency (PCE). However, uncontrolled distribution of third component in bulk heterojunction (BHJ) device often results low ( E FRET ), and also tends to compromise interpenetrating network structure active layer. Herein, a localized deposition strategy is proposed establish with controlled (CDBHJ). Take PM6:Y6:IBC‐F for example, IBC‐F serves as donor PM6 acceptor. Compared BHJ‐based devices, proportion within phase increases from 25.1% 72.7%, enhancing 46.5% 66.8% CDBHJ‐based devices. Furthermore, improves crystallization separation kinetics during film‐forming process. Thus, exhibits superior exciton generation, diffusion, dissociation process, along higher more balanced charge transport. Consequently, achieves PCE 18.29%, which ranks among best PM6:Y6‐based T‐OSCs. This work demonstrates effectiveness controlling component, presenting an innovative pathway development highly efficient

Language: Английский

Citations

4
Over 19.2% Efficiency of Layer‐By‐Layer Organic Photovoltaics by Ameliorating Exciton Dissociation and Charge Transport DOI Open Access

Hongyue Tian,

Hang Zhou, Lu Zhang

et al.

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

Published: Jan. 26, 2025

Abstract Layer‐by‐layer (LbL) organic photovoltaics (OPVs) are fabricated with polymer PM1 as donor and small molecule L8‐BO acceptor by employing sequential spin‐coating technology. The BTP‐eC9 PTAA deliberately selected for individually incorporating into layer layer, resulting in the power conversion efficiency (PCE) increased from 18.22% to 19.23%. improvement of performance is attributed synergistically short circuit current density ( J SC ) 27.78 mA cm −2 fill factor (FF) 78.23%. introduction can promote photogenerated exciton dissociation, especially excitons near anode. Meanwhile, molecular crystallinity also enhanced appropriate layer. incorporation provide hole transport channels effectively improve holes generated self‐dissociation L8‐BO, FFs 77.40% synergistic effects layers result a 19.23% PCE optimized LbL‐OPVs. This work demonstrates that there great room hierarchically optimize achieving highly efficient

Language: Английский

Citations

3
Layered All‐Polymer Solar Cells with Efficiency of 18.34% by Employing Alloyed Polymer Donors DOI Open Access
Hang Zhou, Lu Zhang,

Hongyue Tian

et al.

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 7, 2025

Abstract A series of layered all‐polymer solar cells (LA‐PSCs) with the normal or inverted structure are prepared by employing a sequential spin‐coating method PBQx‐TCl, PM1 as polymer donor, and PY‐DT acceptor. The power conversion efficiency (PCE) LA‐PSCs can be improved from 17.20% to 18.34% incorporating 30 wt.% into PBQx‐TCl layer, resulting simultaneously increased J SC 25.35 mA cm −2 , V OC 0.971 FF 74.49%. PCE improvement also achieved PBQx‐TCl:PM1 donor layers. mixed prefer form alloyed states in LA‐PSCs, which confirmed gradually s more content Meanwhile, photogenerated excitons layers dissociated at interface between PM1, especially for located near ITO electrode. exciton dissociation provide an additional channel improving utilization efficiency, positive external quantum spectral difference (∆EQE) values Over 6.6% realized using layer.

Language: Английский

Citations

2
Dynamic Controller Design for Maximum Power Point Tracking Control for Solar Energy Systems DOI Creative Commons
M. A. Fkirin,

Zeinab M. Gowaly,

Emad A. Elsheikh

et al.

Technologies, Journal Year: 2025, Volume and Issue: 13(2), P. 71 - 71

Published: Feb. 8, 2025

The demand for efficient renewable energy solutions has spurred the development of advanced maximum power point tracking (MPPT) algorithms photovoltaic (PV) systems, especially under variable atmospheric conditions. This study proposes a dynamic MPPT controller utilizing combination Long Short-Term Memory (LSTM)-based Artificial Neural Networks (ANNs) and Fuzzy Logic Control (FLC) to optimize extraction in solar systems across diverse irradiance temperature focuses on designing implementing these two algorithms, LSTM-ANN LSTM-FLC, effectively manage inherent variability generation due fluctuating conditions, ensuring that PV system consistently operates at its optimal point. proposed controllers are evaluated compared LSTM–Proportional Integral (PI) traditional methods, including ANNs, Logic, hybrid ANN–Fuzzy. performance metrics used evaluation include efficiency, response time, stability. simulation results with real-time data demonstrate LSTM-optimized significantly outperform conventional particularly adapting sudden changes temperature.

Language: Английский

Citations

1
Leveraging Compatible Iridium(III) Complexes to Boost Performance of Green Solvent‐Processed Non‐Fullerene Organic Solar Cells DOI Creative Commons
Xia Hao, Miao Zhang,

Huaxi Wang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract In organic solar cells (OSCs), the short exciton lifetime poses a significant limitation to diffusion and dissociation. Extending suppressing recombination are crucial strategies for improving OSC performance. Herein, an effective approach is proposed by introducing phosphorescent emitter, tris(2‐(4‐(tert‐butyl)phenyl)‐5‐fluoropyridine)Iridium(III), with long‐lived triplet in OSCs. This research reveals that steric structure of fac ‐Ir(tBufppy) 3 exhibits excellent compatibility both donor PM6 acceptor BTP‐eC9, maintaining efficiencies over 90% even 30% third component loading. Moreover, 10% addition mitigates excessive aggregation optimizing active layer morphology fill factor. Transient absorption spectroscopy transient photoluminescence measurements demonstrate introduction significantly extends lifetimes suppresses recombination, which increases short‐circuit current ( J SC ). Ultimately, employing non‐halogenated solvent o‐xylene processing, impressive power conversion efficiency (PCE) 18.54% achieved devices based on PM6:10% :BTP‐eC9, surpassing binary PM6:BTP‐eC9 (17.41%). work provides promising further improve PCEs OSCs iridium(III) complex as component.

Language: Английский

Citations

7
Design and virtual screening of donor and non-fullerene acceptor for organic solar cells using long short-term memory model DOI

Long-Fei Lv,

Cai‐Rong Zhang, Rui Cao

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(35), P. 23859 - 23871

Published: Jan. 1, 2024

In this study, we trained long short-term memory models to predict photovoltaic performance parameters. Additionally, cleaved and reorganized molecules obtain novel high-performance donor–acceptor pairs.

Language: Английский

Citations

5
An Arginine-Doped Cathode Interlayer Enables Enhanced Efficiency in Organic Solar Cells DOI

Yuanjian Chen,

Zhengli Zhang, Ruirui Cui

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

The appearance of the cathode interlayer (CIL), a transition bridge between and organic photoactive layer (OPL), provides new pathway for performance improvement solar cells (OSCs). PFN-Br is widely employed in many optoelectronic devices, including nonfullerene OSCs, to transport electrons improve charge injection at interface. However, due relatively low conductivity PFN-Br, thickness CIL prepared with usually less than 10 nm, which evidently contradicts requirements large-scale roll-to-roll manufacturing. Herein, strategy using N-α-carbobenzyloxy-d-Arginine (NA) as doping material proposed PFN-Br. homogeneous distribution NA can modify work function (WF) facilitate an interface dipole arrangement that favorable transfer, resulting binary CILs tunable WF increased conductivity. To verify this method, series devices were PBDB-T:IT-M or PM6:Y6 OPL different proportions CIL. use PFN-Br:NA (0.75:0.06, weight%) helps morphology, making it exhibit trend fiber network structure, leading higher fill factor short circuit current density. Consequently, optimal power conversion efficiency (PCE) based on from 10.5% 11.1% 15.4% 16.0%, respectively. In addition, NA-doped device exhibits better nitrogen stability after 360 h dark storage compared control. discovery these modification approaches insight into hybrid interlayers required efficient reliable OSCs.

Language: Английский

Citations

0