Liquid–Solid Transfer Process of Ordered Structures in Efficient Polymer Photovoltaic Materials DOI
Jiaxuan Ren, Liming Wang, Qingduan Li

et al.

ACS Applied Polymer Materials, Journal Year: 2023, Volume and Issue: 6(1), P. 986 - 996

Published: Dec. 19, 2023

The single-chain conformations and aggregated structures of conjugated polymers in precursor solutions affect the morphology films their photoelectric properties. Dynamic/static light scattering, small-angle neutron high-resolution transmission electron microscopy, selected area diffraction were employed to elucidate efficient donor (PBDT-TTz D18-Cl) chloroform (CF, nonaromatic solvent) chlorobenzene (CB, aromatic for a range concentrations (0.03–5.0 mg/mL). D18-Cl presented more rigid extended chain conformation dilute CF solution. However, relatively flexible PBDT-TTz easily formed π–π interaction with CB molecules, thereby extending main chain's conjugation length. Regulation solution resulted formation compact, ordered structure at increased concentrations. In liquid–solid cross-phase transfer process, effectively inherited by subsequent films. From concentrated solutions, multistage self-assembled directly affected solid-state packing properties resulting Through regulation aggregation solution, hole mobilities nearly an order magnitude, power conversion efficiency solar cells was enhanced 28.8%.

Language: Английский

Dithienoquinoxaline-quaterthiophene wide bandgap donor polymers with strong interchain aggregation for efficient organic solar cells processed with a non-halogenated solvent DOI

Xinkang Wang,

Zesheng Zhang,

Lingchen Kong

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(10), P. 5731 - 5739

Published: Jan. 1, 2024

Wide bandgap oligothiophene based polymers PQx4T and PQx4T-2F were synthesized, among which was very efficient to construct toluene-processed active layers with a non-fullerene acceptor.

Language: Английский

Citations

10
Optimizing of Cathode Interface Layers in Organic Solar Cells Using Polyphenols: An Effective Approach DOI

Xiaoman Ding,

Jie Lv, Zezhou Liang

et al.

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

Published: June 22, 2024

Abstract The cathode interface layers (CILs) play a crucial role in enhancing the performance of organic solar cells (OSCs). However, challenges arise due to high work function CIL and inadequate contact with active layer, leading trap recombination poor charge extraction. In this study, novel approach is proposed improve injection extraction CILs by incorporating polyphenols, trihydroxybenzoic acid (TBA). Focusing on PDINN, its successfully reduced from 4.14 eV 3.80 obtained collection efficiency 91.23% through TBA regulation. These enhancements can be ascribed improved between layer CILs, enhanced formation fine fiber phase width inhibited recombination. As result, power conversion (PCE) binary OSCs comprising PM6: BTP‐ec9 exhibits an increase 18.2% 19.3%, placing it among one highest PCE values. Moreover, demonstrated notable applicability for another as well various systems. Overall, research underscores importance regulating modifying fully exploit their potential devices, while laying groundwork optimizing stability.

Language: Английский

Citations

10
Achieving High Efficiency and Stability in Organic Photovoltaics with a Nanometer-Scale Twin p–i–n Structured Active Layer DOI Creative Commons
Bin Chang, Bing‐Huang Jiang,

Chih‐Ping Chen

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(31), P. 41244 - 41256

Published: July 23, 2024

In pursuing high stability and power conversion efficiency for organic photovoltaics (OPVs), a sequential deposition (SD) approach to fabricate active layers with p-i-n structures (where p, i, n represent the electron donor, mixed donor:acceptor, acceptor regions, respectively, distinctively different from bulk heterojunction (BHJ) structure) has emerged. Here, we present novel that by incorporating two polymer donors,

Language: Английский

Citations

10
Fluorinated and Methylated ortho-Benzodipyrrole-Based Acceptors Suppressing Charge Recombination and Minimizing Energy Loss in Organic Photovoltaics DOI Creative Commons
Yanbo Wang,

Chia‐Lin Tsai,

Yung‐Jing Xue

et al.

Chemical Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The elimination of the A' unit from -type Y6-derivatives has led to development a new class ortho-benzodipyrrole (o-BDP)-based A-DNBND-A-type NFAs. In this work, two NFAs, denoted as CFB and CMB, are designed synthesized, where electron-withdrawing fluorine atoms electron-donating methyl groups substituted on benzene ring o-BDP moiety, respectively. exhibits blue-shifted absorption spectrum, stronger intermolecular interactions, shorter π-π stacking distances, more ordered 3D packing in neat blend films, enabling it effectively suppress charge recombination PM6:CFB device showing higher PCE 16.55% with an FF 77.45%. CMB displays HOMO/LUMO energy level, smaller optical bandgap, less packing, which contributes its superior ability loss PM6:CMB high V oc 0.90 16.46%. To leverage advantages ternary PM6:Y6-16:CFB PM6:Y6-16:CMB devices fabricated. highest 17.83% increased 0.86 J sc 27.32 mA cm-2, while displayed elevated 0.87 improved 74.71%, leading 17.44%. was achieved using non-halogenated greener solvent o-xylene, highlighting their potential for facilitating eco-friendly processing procedures. C-shaped disubstituted o-BDP-based A-D-A type acceptors open up avenues tailoring electronic properties molecular self-assembly, achieving OPV performance enhanced suppression reduced loss.

Language: Английский

Citations

1
Enhancing open-circuit voltage and suppression of energy loss in ternary organic photovoltaics utilizing carbazole/bicarbazole-based guest donors DOI
Chun‐Yu Lin, Bing‐Huang Jiang,

Pei-Jui Weng

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153183 - 153183

Published: June 15, 2024

Language: Английский

Citations

8
High‐Performance Organic Photovoltaics Incorporating Bulk Heterojunction and p–i–n Active Layer Structures DOI
Yu‐Wei Su,

Ching‐En Tsai,

Tzu‐Chien Liao

et al.

Solar RRL, Journal Year: 2023, Volume and Issue: 8(5)

Published: Dec. 10, 2023

In the past five years, significant advancements in development of novel conjugated polymer donors (D) and non‐fullerene acceptors (A), such as small molecules, have substantially boosted power conversion efficiency bulk heterojunction (BHJ) organic photovoltaics (OPVs) devices to over 19%. Recently, pursuit broader impact heightened for OPVs, an alternative processing approach has emerged; this involves a sequential deposition (SD) technique or layer‐by‐layer method, creating active layers with p–i–n structures (p n stand D A region, respectively; i stands BHJ region). Notably, SD method is particularly effective semitransparent (ST‐OPVs), despite material requirements it entails. SD‐processing methods enable creation vertical multiple junctions controllable D/A interfaces, facilitating exciton dissociation charge transport through well‐designed pseudo structure. Furthermore, ST‐OPVs can be integrated into building‐incorporated photovoltaic modules, offering potential applications greenhouses agricultural modernization. This integration allows comprehensive utilization solar spectrum energy. review, current literature consolidated on new materials, polymers molecules electron‐donating electron‐withdrawing aimed at high‐efficiency OPVs BHJ‐ structured layers, perspectives are offered future developments.

Language: Английский

Citations

15
A Fused-Ring Electron Acceptor with Phthalimide-Based Ending Groups for Efficient Ternary Organic Solar Cells DOI

Tianyu Xu,

Xinxin Zhang,

Shengxiong Zhang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(4), P. 4618 - 4627

Published: Jan. 17, 2024

The ternary strategy has been widely applied and recognized to be a valid enhance the organic photovoltaics' (OPVs) performance. Here, new fused-ring electron acceptor, BTP-PIO, is designed synthesized, whose ending groups were replaced by phthalimide-based group (2-butylcyclopenta[f]isoindole-1,3,5,7(2H,6H)-tetraone) from traditional 2-(3-oxo-2,3-dihydro-1H-inden-1-ylidene)malononitrile. endow BTP-PIO with highest lowest unoccupied molecular orbital (LUMO) level wider band gap than those of Y6. device based on PM6:Y6 as guest acceptor achieved an elevated open-circuit voltage (VOC) 0.848 V, short-circuit current density (JSC) 27.31 mA cm–2, fill factor (FF) 73.9%, generating remarkable power conversion efficiency (PCE) 17.10%, which superior binary 16.08%. exhibited improved charge transfer, suppressed carrier recombination, lower energy loss. good miscibility Y6, alloy phase between Y6 was formed in bulk heterojunction, leading better separation packing. This research reveals that modification derivatives feasible way produce highly efficient devices.

Language: Английский

Citations

6
Theoretical insights into single- and co-sensitization of indolocarbazole-based dyes on anatase (101) surface for efficient dye-sensitized solar cells DOI

D.‐L. DENG,

Jianjun Shi, Jincheng Tong

et al.

Computational and Theoretical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 115143 - 115143

Published: Feb. 1, 2025

Language: Английский

Citations

0
Shamrock-shaped Nonfullerene Acceptors Containing Nonhalogenated End Groups for High-Voltage Organic Photovoltaics DOI

Fuli Xie,

Xiangyu Li, Zongtao Wang

et al.

Dyes and Pigments, Journal Year: 2025, Volume and Issue: 235, P. 112616 - 112616

Published: Jan. 2, 2025

Language: Английский

Citations

0
Mitigating the Energy Loss in Ternary Organic Photovoltaics with a Conjugated Terpolymer DOI
Yang‐Yen Yu, Bing‐Huang Jiang,

Yuzhe Han

et al.

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 5, 2025

We investigated the performance of a terpolymer, PM1, as third component in two donor–one acceptor-based ternary organic photovoltaics (OPVs). derivative PM6, incorporates 20% thiophene-thiazolothiazole (TTz) monomers, expanding its structural diversity and featuring lower highest occupied molecular orbital (HOMO) energy level compared to that PM6. To investigate impact we fabricated p–i–n-structured OPVs with following layer configuration: ITO/PEDOT:PSS/PM6:Y6 (or BTP-eC9) or without PM1/PFN-Br/Ag. By examining miscibility blend film morphology, explored how these factors influence carrier dynamics ultimately OPV performance. The high compatibility between PM1 PM6 (χPM6-PM1 = 0.003) facilitated formation well-mixed donor phase, akin an alloy. This homogeneous promoted efficient charge transport suppressed trap-assisted recombination within film. Consequently, PM1-based exhibited reduced nonradiative recombination, leading increased open-circuit voltage (VOC) overall device efficiency. optimal power conversion efficiencies using Y6 BTP-eC9 acceptors reached 17.09 17.60%, respectively. Our findings highlight potential terpolymers promising materials for OPVs, paving way innovative polymer design strategies.

Language: Английский

Citations

0