Efficient All‐Polymer Photomultiplication‐Type Organic Photodetectors with Prolonged Crystallization Process DOI
Qian Wang, Fengzhe Cui, Mengzhen Sha

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(42)

Published: June 13, 2023

Abstract With the progressive development of photomultiplication‐type organic photodetectors (PM‐OPDs), increasing research efforts are devoted to all‐polymer PM‐OPDs due their potential in terms device stability and stretchability. However, poor polymer‐polymer miscibility entanglement long polymer chains still main challenges form desirable active layer morphology such systems. A smooth solidification process is favorable toward realizing a that features ordered molecular orientation high crystallinity. Herein, morphological control issue addressed by modifying film formation kinetics with an insulating blending strategy. The prolonged crystallization polystyrene‐blended films can high‐ordered arrangements crystallinity donor/acceptor phases, leading improved charge transport properties suppressed trap states. boosting trap‐assisted photomultiplication effect, PM‐OPD specific detectivity 4.0 × 10 13 Jones be achieved accumulation enhanced photogenerated electrons at interface efficient injection external holes, which one best values reported for PM‐OPDs. This study not only reveals valuable insights into effects polymers on mechanism, but also provides novel strategy fabricate high‐performance

Language: Английский

Manipulating Vertical Phase Separation Enables Pseudoplanar Heterojunction Organic Solar Cells Over 19% Efficiency via Ternary Polymerization DOI
Dan He, Jixiang Zhou, Yufan Zhu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(5)

Published: Nov. 8, 2023

Abstract Controlling vertical phase separation of the active layer to enable efficient exciton dissociation and charge carrier transport is crucial boost power conversion efficiencies (PCEs) pseudoplanar heterojunction (PPHJ) organic solar cells (OSCs). However, how optimize PPHJ OSCs via molecule design rarely reported yet. Herein, ternary polymerization strategy employed develop a series polymer donors, DL1‐DL4, regulate their solubility, molecular aggregation, orientation, miscibility, thus efficiently manipulating in OSCs. Among them, DL1 not only has enhanced inhibited aggregation partial edge‐on orientation facilitate acceptor molecules, Y6, permeate into increase donor/acceptor interfaces, but also sustains high crystallinity appropriate miscibility with Y6 acquire ordered packing, achieving optimized well juggle devices. Therefore, DL1/Y6 based gain best probability, highest mobilities weakest recombination, afford an impressive PCE 19.10%, which record value for terpolymer donors. It demonstrates that method PCEs.

Language: Английский

Citations

51
Defining Solid Additive's Pivotal Role on Morphology Regulation in Organic Solar Cells Produced by Layer‐by‐layer Deposition DOI Creative Commons
Weiwei Wu, Yongmin Luo, Top Archie Dela Peña

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(22)

Published: March 8, 2024

Abstract Herein, two emerging device optimization methods, solid additive and layer‐by‐layer (LBL) process, for organic solar cells (OSCs) are simultaneously studied. Through traditional blend cast recently proposed identical solvent LBL cast, BDCB (2‐monobromo‐1,3‐dichloro‐bezene), a benzene derivative, is used to improve the performance based on celebrity combination PM6:L8‐BO. The results reveal that finely optimized concentration in PM6 solution can push efficiency of 19.03% compared with only 18.12% while power conversion (PCE) changing trend determined by BDCB's ratio L8‐BO's precursor. morphology characterizations confirm there exists no significant stratification LBL‐processed devices, supported previously reported swelling‐intercalation‐phase separation (SIPS) model. Thereby, additive's 2D considered smart strategy tuning SIPS which various final states. This work not reports cutting‐edge binary OSCs, but also new insight deep understanding method‐based development.

Language: Английский

Citations

32
A high-efficiency and stable organic solar cell with balanced crystallization kinetics DOI
Weichao Zhang,

Yaochang Yue,

Rongsheng Yang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(6), P. 2182 - 2192

Published: Jan. 1, 2024

In this work, we present a conceptual strategy based on multi-acceptor components to realize balanced crystallization kinetics in organic solar cells (OSC) that deliver 19.35% power conversion efficiency with superior photostability.

Language: Английский

Citations

28
Device engineering of non-fullerene organic photovoltaics with extrapolated operational T80 lifetime over 45,000 h in air DOI

Jingchao Cheng,

Chuanhang Guo,

Liang Wang

et al.

Joule, Journal Year: 2024, Volume and Issue: 8(8), P. 2250 - 2264

Published: June 12, 2024

Language: Английский

Citations

23
Insight Into Designing High‐Performance Polythiophenes for Reduced Urbach Energy and Nonradiative Recombination in Organic Solar Cells DOI
Zhe Sun,

Hayoung Ma,

Sangjin Yang

et al.

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

Published: April 18, 2024

Abstract In the pursuit of high‐efficiency polythiophene (PT) organic solar cells (OSCs), a critical challenge is reduction nonradiative recombination. This study comprehensively explores polydithienylthiazolothiazole (PTTz)‐based PT terpolymers: PTTz‐Tz and PTTz‐TzT, in which it demonstrate that molecular structure alterations greatly influence aggregation kinetics orientation these polymers. Specifically, PTTz‐TzT achieves rapid ordering during spin coating, effectively suppressing excessive polymer facilitating appropriate phase separation upon mixing with acceptor. Meanwhile, inherently adopts face‐on orientation, resulting more structured π–π stacking vertical direction after acceptor integration, compared to intrinsic edge‐on PTTz‐Tz. These factors collectively contribute lower Urbach energy substantial recombination PTTz‐TzT‐based OSCs, culminating high photovoltaic conversion efficiency (PCE) exceeding 16%. Furthermore, prominent PCE 19.11% obtained by via ternary blend strategy, among highest values reported for OSCs. investigation underscores significance PT‐based polymers, especially regarding recombination, offers novel insights designing high‐performance donors.

Language: Английский

Citations

21
A dendritic hexamer acceptor enables 19.4% efficiency with exceptional stability in organic solar cells DOI Creative Commons
Tao Jia, Tao Lin, Yang Yang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 20, 2025

Language: Английский

Citations

3
Triadic Halobenzene Processing Additive Combined Advantages of Both Solvent and Solid Types for Efficient and Stable Organic Solar Cells DOI
Jaeyeong Park, Seonghun Jeong, Zhe Sun

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 3, 2024

Solvent additives with a high boiling point (BP) and low vapor pressure (VP) have formed key handle for improving the performance of organic solar cells (OSCs). However, it is not always clear whether they remain in active-layer film after deposition, which can negatively affect reproducibility stability OSCs. In this study, an easily removable solvent additive (4-chloro-2-fluoroiodobenzene (CFIB)) BP VP introduced, behaving like volatile solid that be completely removed during device fabrication process. In-depth studies CFIB addition into D18-Cl donor N3 acceptor validate its dominant non-covalent intermolecular interactions through effective electrostatic interactions. Such phenomena improve charge dynamics kinetics by optimizing morphology, leading to enhanced D18-Cl:N3-based devices power conversion efficiency 18.54%. The CFIB-treated exhibits exceptional thermal (T80 lifetime = 120 h) at 85 °C compared CFIB-free device, because morphological robustness evolving no residual film. features combination advantages (easy application) (high volatility) additives, demonstrating great potential use commercial mass production

Language: Английский

Citations

16
Solution Sequential Deposition Pseudo‐Planar Heterojunction: An Efficient Strategy for State‐of‐Art Organic Solar Cells DOI
Jiangang Liu, Yutong Zhang, Xingpeng Liu

et al.

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 22, 2024

Abstract Organic solar cells (OSCs) are considered as a promising new generation of clean energy. Bulk heterojunction (BHJ) structure has been widely employed in the active layer efficient OSCs. However, precise regulation morphology BHJ is still challenging due to competitive coupling between crystallization and phase separation. Recently, novel pseudo‐planar (PPHJ) structure, prepared through solution sequential deposition, attracted much attention. It an easy‐to‐prepare which separation structures, interfaces, molecular packing can be separately controlled. Employing PPHJ properties OSCs, such power conversion efficiency, stability, transparency, flexibility, so on, usually better than its counterpart. Hence, comprehensive understanding film‐forming process, control, device performance should considered. In terms representative works about PPHJ, this review first introduces fabrication process layers based on structure. Second, applied control methods summarized. Then, influences other property reviewed, largely expand application. Finally, brief prospect development tendency devices discussed with consideration their challenges.

Language: Английский

Citations

15
Correlating Aggregation Ability of Polymer Donors with Film Formation Kinetics for Organic Solar Cells with Improved Efficiency and Processability DOI

Dingding Qiu,

Chen‐Yang Tian,

Hao Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(29)

Published: May 4, 2024

Film formation kinetics significantly impact molecular processability and power conversion efficiency (PCE) of organic solar cells. Here, two ternary random copolymerization polymers are reported, D18─N-p D18─N-m, to modulate the aggregation ability D18 by introducing trifluoromethyl-substituted pyridine unit at para- meta-positions, respectively. The introduction reduces material adjusts interactions with acceptor L8-BO, thereby leading largely changed film earlier phase separation longer times, which enlarge fiber sizes in blend films improve carrier generation transport. As a result, moderate delivers high PCE 18.82% is further improved 19.45% via interface engineering. Despite slightly inferior small area device performances, D18─N-m shows solubility, inspires adjust ratio meta-trifluoromethyl carefully obtain polymer donor D18─N-m-10 good solubility nonhalogenated solvent o-xylene. High PCEs 13.07% 12.43% 1 cm

Language: Английский

Citations

13
Recent development in solid additives enables high-performance organic solar cells DOI

Waqar Ali Memon,

Zihao Deng, Feng He

et al.

EnergyChem, Journal Year: 2024, Volume and Issue: 6(4), P. 100129 - 100129

Published: June 15, 2024

Language: Английский

Citations

13