Exploring the Origin of High Thermal Stability of the Performance of Pseudo-Quaternary All-Polymer Solar Cells DOI
Hong Diem Chau,

Su Hong Park,

Haeun Kwak

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14329 - 14341

Published: Feb. 25, 2025

As all-polymer solar cells (all-PSCs) have achieved impressive power conversion efficiencies (PCEs), extending their lifetime under long-term operation is also increasingly important. To address this issue, in study, a new pseudo-quaternary blend composed of conjugated block copolymer donors and acceptors, PM6-b-TT:b-PYT, introduced as the active layer for all-PSCs. Compared to all-PSC based on traditional binary blend, PM6:BTTP-T, those exhibited significantly improved thermal stability after annealing harsh conditions 150 °C an ambient atmosphere. More importantly, elucidate morphological layer, visible evidence thin film's surface internal structure carefully investigated by multiple advanced techniques. After extended stress at °C, bulk heterojunction (BHJ) films exhibit excessive polymer chain aggregation, phase separation polymers, increased roughness, forming charge traps increasing exciton recombination. Meanwhile, BHJ maintain crystallinity nanostructure improving Overall, study provides detailed understanding high-efficiency all-PSCs, offering key insights into section proposing promising structures

Language: Английский

In-situ understanding on the formation of fibrillar morphology in green solvent processed all-polymer solar cells DOI Creative Commons
Ruijie Ma, Hongxiang Li, Top Archie Dela Peña

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 11(12)

Published: Nov. 4, 2024

ABSTRACT Solid additive engineering has been intensively explored on morphology tuning for highly efficient all-polymer solar cells (all-PSCs), a promising photovoltaic technology towards multi-scenario application. Although the nano-fibrillar network of active layer induced by treatment is confirmed as key factor power conversion efficiency (PCE) all-PSCs, its formation mechanism not clearly revealed, lack precise and convincing real-time observation crystallization phase separation during liquid-to-solid transition process spin-coating. Herein we report an in-situ grazing incidence wide-angle/small-angle X-ray scattering (GIWAXS/GISAXS) screening that reveals fact naphthalene derived solid additives can suppress aggregation polymer acceptor (PY-IT) at beginning stage spin coating, which provides sufficient time space donor (PM6) to form fibril structure. Moreover, guided this knowledge, ternary system proposed, achieves cutting-edge level PCEs both small-area (0.04 cm2) (also decent operational stability) large-area (1 devices.

Language: Английский

Citations

9
Tuning the Aggregated Structure of Polymer Interlayers for High-Performance Quantum Dot Solar Cells and Photodetectors DOI

Dexia Han,

Xueqing Yang, Junwei Liu

et al.

ACS Applied Polymer Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 28, 2024

Due to their unique optoelectronic properties and potential for high efficiency, quantum dot (QD) solar cells photodetectors have gained tremendous attention. Achieving efficient charge transport extraction in these devices is crucial enhancing performance. Polymer interlayers play a vital role facilitating improving the device stability. This Spotlight on Applications paper focuses effective strategies employed tune microstructure of polymer QD achieve efficiency by bringing together recent literature. With use advanced synchrotron radiation scattering microscopic characterizations, we elucidate impact properties, casting solvents, physical blending methods microstructures photodetectors. Furthermore, take detailed look at some facile such as aggregation-suppressed synergy that enabled precise control over interlayers. Finally, provide perspectives future research directions obstacles field.

Language: Английский

Citations

8
Intrinsically Stretchable Organic Solar Cells and Sensors Enabled by Extensible Composite Electrodes DOI
Dexia Han, Kangkang Zhou, Xin Li

et al.

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

Published: Aug. 7, 2024

Abstract Stretchable electrodes are critical to the development of advanced technologies such as human–machine interaction, flexible sensing, and wearable power supply, making them significant research value. However, current preparation methods for high‐performance stretchable complex inefficient, posing challenges their large‐scale application in realm wearables. To address this need, a straightforward efficient embedding strategy is reported fabricating silver nanowire/thermoplastic elastomer composite (referred Strem‐AT) utilizing viscoelasticity outstanding mechanical properties polymer elastomers achieve extensibility, conductivity, smooth surface. These exhibit excellent tensile behavior, low surface roughness, stable electrical properties, enabling successful integration into sensors intrinsically organic photovoltaic cells (IS‐OPV). When applied human skin joints motion detection, sensor demonstrates remarkable stretchability signal output. Importantly, all‐polymer IS‐OPV exhibits top‐notch conversion efficiency (PCE) >12.5% PCE 80% strain exceeding 50%. Furthermore, even after subjecting high‐strain stretching at 50% 1000 cycles, can retain 76% initial PCE. This study presents multifunctional electrode with high repeatability easy‐to‐scale fabrication photovoltaics.

Language: Английский

Citations

8
Unraveling the Solution Aggregation Structures and Processing Resiliency of High‐Efficiency Organic Photovoltaic Blends DOI
Mengyuan Gao, Chunlong Sun, Yiwen Li

et al.

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

Published: Aug. 7, 2024

The solution aggregation structure of conjugated polymers is crucial to the morphology and resultant optoelectronic properties organic electronics considerable interest in field. Precise characterizations structures photovoltaic (OPV) blends their temperature-dependent variations remain challenging. In this work, three representative high-efficiency OPV using small-angle X-ray/neutron scattering are systematically probed. Three cases processing resiliency elucidated state-of-the-art blends. exceptional PBQx-TF can be attributed minimal changes multiscale at elevated temperatures. Importantly, a new parameter, percentage acceptors distributed within polymer aggregates (Ф), for first time blend solution, establishes direct correlation between Ф performance quantified. device well correlated with Kuhn length cylinder related L

Language: Английский

Citations

8
An in situ crosslinked matrix enables efficient and mechanically robust organic solar cells with frozen nano-morphology and superior deformability DOI
Wei Song, Zhenyu Chen,

Congqi Lin

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 7318 - 7329

Published: Jan. 1, 2024

An in-situ cross-linkable monomer is carefully developed into blend films to finely manipulate the molecular packing, crystallization and nanomorphology during film formation. As a result, stabilized PCEs of 19.84% for rigid device 18.32% flexible organic solar cells are achieved.

Language: Английский

Citations

6
Miscibility screening promotes the efficiency and stability of P3HT‐based organic solar cells DOI Creative Commons
Kaihu Xian, Ruijie Ma, Kangkang Zhou

et al.

Aggregate, Journal Year: 2023, Volume and Issue: 5(2)

Published: Nov. 20, 2023

Abstract The power conversion efficiency of organic photovoltaics (OPVs) has witnessed continuous breakthroughs in the past few years, mostly benefiting from extensive use a facile ternary blending strategy by host polymer donor:small molecule acceptor mixture with second small acceptor. Nevertheless, this rather general used well‐known PM6 systems fails constructing high‐performance P3HT‐based OPVs. As result, efficiencies all resulting blends based on benchmark P3HT:ZY‐4Cl and are no more than 8%. Employing mutual miscibility binary as guide to screen acceptor, here we were able break longstanding 10%‐efficiency barrier OPVs P3HT dual nonfullerene acceptors. With rational approach, identified multifunctional BTP‐2Br simultaneously improve photovoltaic performance both PM6‐based Attractively, P3HT:ZY‐4Cl:BTP‐2Br blend exhibited record‐breaking 11.41% for This is first‐ever report that over 11% achieved Importantly, study helps community rely less trial‐and‐error methods solar cells.

Language: Английский

Citations

15
High‐Detectivity All‐Polymer Photodiode Empowers Smart Vitality Surveillance and Computational Imaging Rivaling Silicon Diodes DOI Creative Commons
Hrisheekesh Thachoth Chandran, Ruijie Ma, Zhihan Xu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(38)

Published: July 30, 2024

Abstract Near‐infrared (NIR) organic photodetectors (OPDs), particularly all‐polymer‐based ones, hold substantial commercial promise in the healthcare and imaging sectors. However, process of optimizing their active layer composition to achieve highly competitive figures merit lacks a clear direction methodology. In this work, celebrity polymer acceptor PY‐IT into more NIR absorbing host system PBDB‐T:PZF‐V, significantly enhance photodetection competence, is introduced. The refined all‐polymer ternary broadband photodetector demonstrates superior performance metrics, including experimentally measured noise current as low 6 fA Hz −1/2 , specific detectivity reaching 8 × 10 12 Jones, linear dynamic range (LDR) 145 dB, swift response speed surpassing 200 kHz, striking fair balance between sensitivity speed. Comprehensive morphological photophysical characterizations elucidate mechanisms behind observed enhancements study, which include reduced trap density, enhanced charge transport, diminished recombination, balanced electron/hole mobilities. Moreover, practical deployment potential proof‐of‐concept device self‐powered mode demonstrated through application machine learning‐based cuffless blood pressure (BP) estimation high‐resolution computational across complex environments, where they are found quantitatively rival silicon diodes.

Language: Английский

Citations

5
Morphologically engineered multi-component organic solar cells with stratified donor distribution and alloyed acceptors for enhanced efficiency and stability DOI
Nan Zhang, Kui Jiang, Francis Lin

et al.

Materials Today Energy, Journal Year: 2024, Volume and Issue: 42, P. 101548 - 101548

Published: March 7, 2024

Language: Английский

Citations

4
Efficient Ternary Organic Solar Cells with Suppressed Nonradiative Recombination and Fine‐Tuned Morphology via IT‐4F as Guest Acceptor DOI
Yang Zhang,

Tianhuan Huang,

Nan Weng

et al.

ChemSusChem, Journal Year: 2024, Volume and Issue: 17(16)

Published: March 21, 2024

The large open circuit voltage (V

Language: Английский

Citations

4
Highly efficient and stable binary and ternary organic solar cells using polymerized nonfused ring electron acceptors DOI Creative Commons
Xiaodong Wang, Nan Wei, Yanan Chen

et al.

National Science Review, Journal Year: 2024, Volume and Issue: 11(9)

Published: Aug. 12, 2024

ABSTRACT This study reports the successful design and synthesis of two novel polymerized nonfused ring electron acceptors, P-2BTh P-2BTh-F, derived from high-performance acceptor, 2BTh-2F. Prepared via Stille polymerization, these polymers feature thiophene fluorinated as π-bridge units. Notably, with difluorothiophene π-bridge, exhibits a more planar backbone red-shifted absorption spectrum compared P-2BTh. When employed in organic solar cells (OSCs) PBDB-T donor material, P-2BTh-F-based devices demonstrate an outstanding power conversion efficiency (PCE) over 11%, exceeding 8.7% achieved by P-2BTh-based devices. Furthermore, all-polymer utilizing PBDB-T:P-2BTh-F exhibit superior storage stability. Additionally, P-2BTh-F was explored functional additive binary system, enhancing stability while maintaining comparable PCE (19.45%). strategy offers cost-effective approach for fabricating highly efficient stable ternary cells, opening new horizons durable cell development.

Language: Английский

Citations

4