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

Self‐Assembled Interlayer Enables High‐Performance Organic Photovoltaics with Power Conversion Efficiency Exceeding 20% DOI

Shitao Guan,

Yaokai Li,

Chang Xu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 21, 2024

Interfacial layers (ILs) are prerequisites to form the selective charge transport for high-performance organic photovoltaics (OPVs) but mostly result in considerable parasitic absorption loss. Trimming ILs down a mono-molecular level via self-assembled monolayer is an effective strategy mitigate However, such suffers from inferior electrical contact with low surface coverage on rough surfaces and poor producibility. To address these issues, here, interlayer (SAI) developed, which involves thin layer of 2-6 nm full substrate both covalent van der Waals bonds by using molecule 2-(9H-carbazol-9-yl) (2PACz). Via facile spin coating without further rinsing annealing process, it not only optimizes optical properties OPVs, enables world-record efficiency 20.17% (19.79% certified) also simplifies tedious processing procedure. Moreover, SAI especially useful improving absorbing selectivity semi-transparent record light utilization 5.34%. This work provides optimize OPVs solar window applications.

Language: Английский

Citations

273
Non-fullerene acceptor with asymmetric structure and phenyl-substituted alkyl side chain for 20.2% efficiency organic solar cells DOI
Yuanyuan Jiang,

Shaoming Sun,

Renjie Xu

et al.

Nature Energy, Journal Year: 2024, Volume and Issue: 9(8), P. 975 - 986

Published: June 12, 2024

Language: Английский

Citations

267
Isomerization strategy on a non-fullerene guest acceptor for stable organic solar cells with over 19% efficiency DOI
Zhenyu Chen, Jintao Zhu, Daobin Yang

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(7), P. 3119 - 3127

Published: Jan. 1, 2023

Isomeric non-fullerene acceptor guest with large π-conjugation skeleton is used to construct stable organic solar cells efficiencies over 19%.

Language: Английский

Citations

168
Advantages, challenges and molecular design of different material types used in organic solar cells DOI
Jicheng Yi, Guangye Zhang, Han Yu

et al.

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 9(1), P. 46 - 62

Published: Dec. 15, 2023

Language: Английский

Citations

162
Benzo[d]thiazole Based Wide Bandgap Donor Polymers Enable 19.54% Efficiency Organic Solar Cells Along with Desirable Batch‐to‐Batch Reproducibility and General Applicability DOI
Bo Pang,

Chentong Liao,

Xiaopeng Xu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(21)

Published: March 4, 2023

Abstract The limited selection pool of high‐performance wide bandgap (WBG) polymer donors is a bottleneck problem the nonfullerene acceptor (NFA) based organic solar cells (OSCs) that impedes further improvement their photovoltaic performances. Herein, series new WBG polymers, namely PH‐BTz, PS‐BTz, PF‐BTz, and PCl‐BTz, are developed by using bicyclic difluoro‐benzo[d]thiazole (BTz) as block benzo[1,2‐b:4,5‐b′]dithiophene (BDT) derivatives donor units. By introducing S, F, Cl atoms to alkylthienyl sidechains on BDT, resulting polymers exhibit lowered energy levels enhanced aggregation properties. fluorinated PBTz‐F not only exhibits low‐lying HOMO level, but also has stronger face‐on packing order results in more uniform fibril‐like interpenetrating networks related PF‐BTz:L8‐BO blend. A high‐power conversion efficiency (PCE) 18.57% achieved. Moreover, good batch‐to‐batch reproducibility general applicability. In addition, ternary blend OSCs host PBTz‐F:L8‐BO PM6 guest PCE 19.54%, which among highest values OSCs.

Language: Английский

Citations

158
19.7% efficiency binary organic solar cells achieved by selective core fluorination of nonfullerene electron acceptors DOI Creative Commons
Kerui Liu, Yuanyuan Jiang, Guangliu Ran

et al.

Joule, Journal Year: 2024, Volume and Issue: 8(3), P. 835 - 851

Published: Jan. 30, 2024

Language: Английский

Citations

152
Interface Engineering for Highly Efficient Organic Solar Cells DOI
Haoran Tang,

Yuanqing Bai,

Haiyang Zhao

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(16)

Published: March 3, 2023

Organic solar cells (OSCs) have made dramatic advancements during the past decades owing to innovative material design and device structure optimization, with power conversion efficiencies surpassing 19% 20% for single-junction tandem devices, respectively. Interface engineering, by modifying interface properties between different layers OSCs, has become a vital part promote efficiency. It is essential elucidate intrinsic working mechanism of layers, as well related physical chemical processes that manipulate performance long-term stability. In this article, advances in engineering aimed pursue high-performance OSCs are reviewed. The specific functions corresponding principles summarized first. Then, anode layer, cathode layer interconnecting devices discussed separate categories, engineering-related improvements on efficiency stability analyzed. Finally, challenges prospects associated application emphasis large-area, high-performance, low-cost manufacturing.

Language: Английский

Citations

147
Donor–acceptor mutually diluted heterojunctions for layer-by-layer fabrication of high-performance organic solar cells DOI
Liang Wang, Chen Chen,

Yiwei Fu

et al.

Nature Energy, Journal Year: 2024, Volume and Issue: 9(2), P. 208 - 218

Published: Jan. 9, 2024

Language: Английский

Citations

130
Molecular interaction induced dual fibrils towards organic solar cells with certified efficiency over 20% DOI Creative Commons
Chen Chen, Liang Wang,

Weiyi Xia

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Aug. 10, 2024

The nanoscale fibrillar morphology, featuring long-range structural order, provides abundant interfaces for efficient exciton dissociation and high-quality pathways effective charge transport, is a promising morphology high performance organic solar cells. Here, we synthesize thiophene terminated non-fullerene acceptor, L8-ThCl, to induce the fibrillization of both polymer donor host that surpasses 20% efficiency milestone After adding original weak less continuous nanofibrils donors, i.e. PM6 or D18, are well enlarged refined, whilst acceptor L8-BO also assembles into with enhanced order. By adapting layer-by-layer deposition method, order can be retained significantly boost power conversion efficiency, specific values 19.4% 20.1% PM6:L8-ThCl/L8-BO:L8-ThCl D18:L8-ThCl/L8-BO:L8-ThCl devices, latter being certified 20.0%, which highest reported so far single-junction

Language: Английский

Citations

122
20.2% Efficiency Organic Photovoltaics Employing a π‐Extension Quinoxaline‐Based Acceptor with Ordered Arrangement DOI
Zhenyu Chen, Jinfeng Ge, Wei Song

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(33)

Published: June 20, 2024

Organic solar cells, as a cutting-edge sustainable renewable energy technology, possess myriad of potential applications, while the bottleneck problem less than 20% efficiency limits further development. Simultaneously achieving an ordered molecular arrangement, appropriate crystalline domain size, and reduced nonradiative recombination poses significant challenge is pivotal for overcoming limitations. This study employs dual strategy involving development novel acceptor ternary blending to address this challenge. A non-fullerene acceptor, SMA, characterized by highly arrangement high lowest unoccupied orbital level, synthesized. By incorporating SMA guest in PM6:BTP-eC9 system, it observed that staggered liquid-solid transition donor facilitating crystallization ordering maintaining suitable size. Furthermore, optimized vertical morphology bimolecular recombination. As result, device achieved champion 20.22%, accompanied increased voltage, short-circuit current density, fill factor. Notably, stabilized 18.42% attained flexible devices. underscores synergistic approach integrating material innovation techniques optimizing bulk heterojunction photovoltaic performance.

Language: Английский

Citations

100