Dimerized small molecule donor enables efficient ternary organic solar cells DOI Creative Commons

Mingrui Pu,

Chunxian Ke,

Yongwen Lang

и другие.

Giant, Год журнала: 2024, Номер 19, С. 100325 - 100325

Опубликована: Июль 11, 2024

Ternary organic solar cells (OSCs) are the feasible and efficient strategy to achieve high-performance OSCs. It is of great significance develop a superior third component candidate for constructing ternary In this work, we intelligently designed synthesized dimerized small molecule donor by connecting two asymmetric donors with vinyl group, which named DSMD-βV. This innovative oligomeric DSMD-βV not only exhibits complementary absorption cascade energy level arrangement PM6 BTP-eC9, but also regulates phase separation micromorphology based on PM6:BTP-eC9. Consequently, PM6:DSMD-βV:BTP-eC9 device improved exciton dissociation, charge transport decreased recombination, thus achieving power conversion efficiency (PCE) 18.26 %, surpassing PM6:BTP-eC9 binary (17.63 %). work indicates that able become promising candidate, opens up unique idea construction cells.

Язык: Английский

Recent progress on non-fullerene acceptor materials for organic solar cells DOI

Qing Wu,

Sha Ding, Aokui Sun

и другие.

Materials Today Chemistry, Год журнала: 2024, Номер 41, С. 102290 - 102290

Опубликована: Сен. 8, 2024

Язык: Английский

Процитировано

11
Achieving 19.72% Efficiency in Ternary Organic Solar Cells through Electrostatic Potential‐Driven Morphology Control DOI
Wenting Liang,

Shenbo Zhu,

Kangbo Sun

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 9, 2024

Abstract The ternary strategy has proven effective in enhancing the performance of organic solar cells (OSCs), yet identifying optimal third component remains a challenge due to lack theoretical frameworks for predicting its impact based on molecular structure. This study addresses this by proposing quantitative parameters derived from surface electrostatic potential (ESP) as criteria selecting components. asymmetric acceptor BTP‐OS, which exhibits lower total average ESP and larger polarization index relative host acceptor, is introduced into PM6:L8‐BO system. incorporation led weakened ESP‐induced intermolecular interactions reduce miscibility with donor polymer, resulting an optimized multi‐scale morphology blend. Consequently, device achieved efficiency 19.72%, one highest values PM6:L8‐BO‐based devices, enhanced exciton dissociation charge collection, energy disorder, minimized non‐radiative losses. Comparable improvements are also verified PM6:BTP‐eC9 D18:N3 systems, demonstrating broad applicability proposed approach. not only provides practical principle components but establishes broader framework optimizing OSCs, potentially advancing development more efficient OSCs across diverse material systems.

Язык: Английский

Процитировано

10
Layered All‐Polymer Solar Cells with Efficiency of 18.34% by Employing Alloyed Polymer Donors DOI Open Access
Hang Zhou, Lu Zhang,

Hongyue Tian

и другие.

Small, Год журнала: 2025, Номер 21(11)

Опубликована: Фев. 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.

Язык: Английский

Процитировано

2
Self‐Assembled Monolayers for Highly Efficient All‐Polymer Solar Cells Sequentially Processed from Hydrocarbon Solvent DOI Open Access
Hui Huang, Guoping Zhang, Chen Xie

и другие.

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract All‐polymer solar cells (all‐PSCs), comprising polymer donors and polymerized small‐molecule acceptors (PSMAs), hold significant promise for industrial production owing to their superior device efficiencies stability. However, the lower molecular weights weaker crystallinity of PSMAs lead low electron mobility, while achieving high in all‐PSCs typically rely on use highly volatile chloroform. These challenges have been addressed through development self‐assembled monolayers (SAMs) as a novel interfacial layer, offering improved transparency, stability, sensitivity surface passivation. This research investigates SAMs, specifically 2PACz, hole transporting layer (HTL) all‐PSCs, employing sequential processing strategy with toluene solvent mitigate aforementioned challenges. study achieves efficient 2PACz‐based all‐PSC at 19.19% (certificated 18.51%), which is new record by non‐halogen solvents. Compared PEDOT:PSS‐based cells, performance devices can be attributed enlarged charge carrier prolonged lifetime, constrained recombination traps. Good generality 2PACz HTL observed PM6:PYF‐T‐ o PM6:PJ1‐γ systems outperform PEDOT:PSS counterparts. results demonstrate that SAMs are promising candidate transport engineering high‐performance all‐PSCs.

Язык: Английский

Процитировано

1
Progress in the Stability of Small Molecule Acceptor‐Based Organic Solar Cells DOI
Xu Han, Jianhua Han, Anirudh Sharma

и другие.

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 5, 2024

Abstract Significant advancements in power conversion efficiency have been achieved organic solar cells with small molecule acceptors. However, stability remains a primary challenge, impeding their widespread adoption renewable energy applications. This review summarizes the degradation of different layers within device structure under varying conditions, including light, heat, moisture, and oxygen. For photoactive layers, chemical pathways polymer donors acceptors are examined detail, alongside morphological bulk heterojunction structure, which plays crucial role performance. The mechanisms commonly used anode cathode interlayers electrodes addressed, as these significantly influence overall stability. Mitigation methods for identified provided each section to offer practical insights improving longevity. Finally, an outlook presents remaining challenges achieving long‐term stability, emphasizing research directions that require further investigation enhance reliability performance real‐world

Язык: Английский

Процитировано

8
Medium‐Bandgap Acceptors for Efficient Ternary Organic Solar Cells Achieved by End‐Group Engineering DOI
Long Chen, Yuanyuan Liu, Huiqiu Deng

и другие.

Solar RRL, Год журнала: 2025, Номер unknown

Опубликована: Март 18, 2025

The ternary strategy has been evidenced as one of the most crucial methods to improve photovoltaic performance organic solar cells. However, selection and design third components are decisive factors facilitating progress cells (TOSCs). In this study, focuses concentrated on D18‐Cl:N3 binary host device by developing a weakly electron‐withdrawing end group synthesizing guest acceptor, BTP‐CM, which holds similar backbone N3. structure resemblance ensures good compatibility molecule with N3, improves charge transport reduces recombination. Thereby, D18‐Cl:N3:BTP‐CM‐based TOSC exhibits an improved power conversion efficiency 18.32%, compared 17.13% device. This work provides effective for acceptors, aims introduce new groups obtain molecules complementary absorptions matched energy levels while preserving molecular acceptor.

Язык: Английский

Процитировано

1
CF3-Functionalized Side Chains in Nonfullerene Acceptors Promote Electrostatic Interactions for Highly Efficient Organic Solar Cells DOI
Yongjoon Cho, Zhe Sun, Guoping Li

и другие.

Journal of the American Chemical Society, Год журнала: 2024, Номер unknown

Опубликована: Дек. 18, 2024

The advent of next-generation nonfullerene acceptors (NFAs) has propelled major advances in organic solar cells (OSCs). Here we report an NFA design incorporating CF

Язык: Английский

Процитировано

6
Nanoscale Balance of Energy Loss and Quantum Efficiency for High-Efficiency Polythiophene-Based Organic Solar Cells DOI

Zhe Sun,

Hayoung Ma,

Thi Le Huyen

и другие.

ACS Nano, Год журнала: 2024, Номер unknown

Опубликована: Дек. 25, 2024

Polythiophene donors offer scalable and cost-effective solutions for the organic photovoltaic industry. A thorough understanding of structure–property–performance relationship is essential advancing polythiophene-based solar cells (PTOSCs) with high power conversion efficiencies (PCEs). Herein, we develop two polythiophene donors─PTTz-CN PTTz-CN(T2)─to verify energy loss–quantum efficiency relationship. The strong preaggregation property PTTz-CN improves quantum in spite nonradiative recombination loss, while PTTz-CN(T2) chains are weakly preaggregated, causing low efficiency, accompanied by loss though. Synergistically optimized achieved judiciously mixing PTTz-CN(T2), delivering outstanding PCEs up to 16.4% PTOSC system 19.6% an archetype a high-performing OSC containing optimal PTTz-CN:PTTz-CN(T2) composition. We highlight significance desirable balance between via molecular interaction tuning improve performances.

Язык: Английский

Процитировано

6
Regulating Crystallinity and Miscibility via Ternary Strategy Triggers Efficient All-Small-Molecule Organic Solar Cells DOI
Yixuan Xu, Chunyan Liu,

Wentao Zou

и другие.

ACS Materials Letters, Год журнала: 2024, Номер 6(5), С. 1920 - 1928

Опубликована: Апрель 11, 2024

All-small-molecule OSCs (ASM-OSCs) have garnered significant attention for their inherent advantages, including low batch-to-batch variations and well-defined molecular structures. However, power conversion efficiencies (PCEs) are relatively inferior, mainly imputed to the challenges in controlling active layer morphologies. Herein, FSBTSeHR, a small-molecule donor (SMD) was added B1:BTP-eC9 blend. FSBTSeHR exhibits high crystallinity, improving packing ternary Furthermore, has better miscibility with host B1 than BTP-eC9, leading proper nanoscale phase separation morphology layer. The optimized facilitates charge transport extraction while suppressing recombination devices. Transient absorption spectroscopy (TAS) reveals rapid exciton dissociation diffusion process blend of B1:FSBTSeHR:BTP-eC9, which is consistent its improved morphology. Thus, device obtained remarkable PCE (17.04%), one highest values ASM-OSCs date.

Язык: Английский

Процитировано

5
Fine-tuning of film morphology through addition of a third component enables organic solar cells with efficiency over 18% DOI
Kun Wang,

Chunxiao Sun,

Cheng Zhang

и другие.

Materials Chemistry Frontiers, Год журнала: 2024, Номер 8(15), С. 2657 - 2665

Опубликована: Янв. 1, 2024

By incorporating an acceptor Y-TNF with a structure analogous to Y6 as the third component, nanofiber of active layer is further optimized, molecular arrangement more ordered, and PCE device reaches 18.1%.

Язык: Английский

Процитировано

4