Effective N‐Doping of Non‐Fullerene Acceptor via Sequential Deposition Enables High‐Efficiency Organic Solar Cells DOI

Meiling Xie,

Lingyun Zhu, Jianqi Zhang

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(24)

Published: April 1, 2024

Abstract Charge transport in the active layer, which can be effectively modulated by molecular doping of organic semiconductors, significantly affects photovoltaic performance solar cells (OSCs). However, it is difficult to control dopant distribution bulk heterojunction (BHJ) films, hinders efficient OSCs. Herein, an effective n‐doping strategy developed via sequential deposition (SD) D18 donor and doped acceptor. The favorable vertical component SD films helps optimize carrier pathways. method confines n‐dopant N‐DMBI acceptor allowing positive effects doping. Consequently, device exhibits superior charge with suppressed recombination, lower trap density, enhanced extraction compared undoped one, resulting a high power conversion efficiency 19.55% for D18/L8‐BO binary In addition, does not affect thermal stability devices, retaining over 90% its initial after 1200 h heating at 80 °C. universality also verified other non‐fullerene systems. These results demonstrate great potential building high‐performance OSCs transport.

Language: Английский

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

115
Light-induced quinone conformation of polymer donors toward 19.9% efficiency organic solar cells DOI

Chuanhang Guo,

Yuandong Sun, Liang Wang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(7), P. 2492 - 2499

Published: Jan. 1, 2024

UV-light illumination converts the aromatic conformation of polymer donors into a rigid quinone structure, resulting in compact fibrillar aggregation active layer to achieve maximum efficiency 19.9% single-junction organic solar cells.

Language: Английский

Citations

59
Designing A–D–A Type Fused‐Ring Electron Acceptors with a Bulky 3D Substituent at the Central Donor Core to Minimize Non‐Radiative Losses and Enhance Organic Solar Cell Efficiency DOI
Hao Lu,

Dawei Li,

Wenlong Liu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(33)

Published: May 29, 2024

Designing and synthesizing narrow band gap acceptors that exhibit high photoluminescence quantum yield (PLQY) strong crystallinity is a highly effective, yet challenging, approach to reducing non-radiative energy losses (▵E

Language: Английский

Citations

53
Amino‐Functionalized Graphdiyne Derivative as a Cathode Interface Layer with High Thickness Tolerance for Highly Efficient Organic Solar Cells DOI

Yuanyuan Kan,

Yanna Sun, Yi Ren

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 17, 2024

Abstract Efficient cathode interfacial materials (CIMs) are essential components for effectively enhancing the performance of organic solar cells (OSCs). Although high‐performance CIMs desired to meet requirements various OSCs, potential candidates scarce. Herein, an amino‐functionalized graphdiyne derivative (GDY‐N) is developed, which represents first example GDY that exhibits favorable solubility in alcohol. Utilizing GDY‐N as CIM, outstanding champion PCE 19.30% devices based on D18‐Cl:L8‐BO (certified result: 19.05%) achieved, among highest efficiencies reported date OSCs. Remarkably, exhibit a thickness‐insensitive characteristic, maintaining 95% their initial efficiency even with film thickness 25 nm. Moreover, displays wide universality and facilitates exceptional stability This work not only enriches diversity derivatives, but also demonstrates feasibility derivatives high tolerance

Language: Английский

Citations

47
Self‐Assembled Molecules with Asymmetric Backbone for Highly Stable Binary Organic Solar Cells with 19.7 % Efficiency DOI

Xueliang Yu,

Pengfei Ding, Daobin Yang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)

Published: March 9, 2024

The hole-transporting material (HTM), poly (3,4-ethylene dioxythiophene) poly(styrene sulfonate) (PEDOT : PSS), is the most widely used in realization of high-efficiency organic solar cells (OSCs). However, stability PEDOT PSS-based OSCs quite poor, arising from its strong acidity and hygroscopicity. In addition, PSS has an absorption infrared region high highest occupied molecular orbital (HOMO) energy level, thus limiting enhancement short-circuit current density (J

Language: Английский

Citations

45
Constructing Multiscale Fibrous Morphology to Achieve 20% Efficiency Organic Solar Cells by Mixing High and Low Molecular Weight D18 DOI Open Access
Nan Wei,

Jieni Chen,

Yetai Cheng

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(41)

Published: Sept. 1, 2024

This study underscores the significance of precisely manipulating morphology active layer in organic solar cells (OSCs). By blending polymer donors D18 with varying molecular weights, a multiscale interpenetrating fiber network structure within is successfully created. The introduction 10% low weight (LW-D18) into high (HW-D18) produces MIX-D18, which exhibits an extended exciton diffusion distance and orderly stacking. Devices utilizing MIX-D18 demonstrate superior electron hole transport, improves dissociation, enhances charge collection efficiency, reduces trap-assisted recombination compared to other two materials. Through use nonfullerene acceptor L8-BO, remarkable power conversion efficiency (PCE) 20.0% achieved. methodology, integrates favorable attributes polymers, opens new avenue for enhancing performance OSCs.

Language: Английский

Citations

44
Dipole Moments Regulation of Biphosphonic Acid Molecules for Self-assembled Monolayers Boosts the Efficiency of Organic Solar Cells Exceeding 19.7% DOI
Huan Liu,

Yufei Xin,

Zhaochen Suo

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(20), P. 14287 - 14296

Published: May 8, 2024

PEDOT:PSS has been widely used as a hole extraction layer (HEL) in organic solar cells (OSCs). However, their acidic nature can potentially corrode the indium tin oxide (ITO) electrode over time, leading to adverse effects on longevity of OSCs. Herein, we have developed class biphosphonic acid molecules with tunable dipole moments for self-assembled monolayers (SAMs), namely, 3-BPIC(i), 3-BPIC, and 3-BPIC-F, which exhibit an increasing moment sequence. Compared centrosymmetric axisymmetric 3-BPIC 3-BPIC-F higher adsorption energies (Eads) ITO, shorter interface spacing, more uniform coverage ITO surface, better interfacial compatibility active layer. Thanks incorporation fluorine atoms, exhibits deeper highest occupied molecular orbital (HOMO) energy level larger compared resulting enlarged work function (WF) ITO/3-BPIC-F substrate. These advantages could not only improve within device but also lower impedance reduce nonradiative recombination at interface. As result, OSCs using SAM based obtained record high efficiency 19.71%, is than that achieved from 3-BPIC(i) (13.54%) (19.34%). Importantly, 3-BPIC-F-based significantly enhanced stability utilizing HEL. Our offers guidance future design functional SAMs realize even performance cells.

Language: Английский

Citations

42
Non‐Fully Conjugated Dimerized Giant Acceptors with Different Alkyl‐Linked Sites for Stable and 19.13 % Efficiency Organic Solar Cells DOI
Yi Fan, Manjun Xiao,

Yongdie Meng

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(14)

Published: Feb. 9, 2024

Abstract Achieving both high power conversion efficiency (PCE) and device stability is a major challenge for the practical development of organic solar cells (OSCs). Herein, three non‐fully conjugated dimerized giant acceptors (named 2Y‐sites, including wing‐site‐linked 2Y‐wing, core‐site‐linked 2Y‐core, end‐site‐linked 2Y‐end) are developed. They share similar monomer precursors but have different alkyl‐linked sites, offering fine‐tuned molecular absorption, packing, glass transition temperature, carrier mobility. Among their binary active layers, D18/2Y‐wing has better miscibility, leading to optimized morphology more efficient charge transfer compared D18/2Y‐core D18/2Y‐end. Therefore, D18/2Y‐wing‐based OSCs achieve superior PCE 17.73 %, attributed enhanced photocurrent fill factor. Furthermore, exhibit balance improved stability, distinguishing them within 2Y‐sites. Building on success 2Y‐wing in systems, we extend its application ternary by pairing it with near‐infrared absorbing D18/BS3TSe‐4F host. Thanks complementary absorption 300–970 nm further morphology, obtain higher 19.13 setting new benchmark dimer‐derived OSCs. This approach site engineering constructing presents promising pathway improve

Language: Английский

Citations

41
Polymer Donor with a Simple Skeleton and Minor Siloxane Decoration Enables 19% Efficiency of Organic Solar Cells DOI
Xing Chen,

Mingqing Chen,

Jiahao Liang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(16)

Published: Jan. 18, 2024

Abstract Development of polymer donors with simple chemical structure and low cost is great importance for commercial application organic solar cells (OSCs). Here, side‐chain random copolymer PMQ‐Si605 a simply 6,7‐difluoro‐3‐methylquinoxaline‐thiophene backbone 5% siloxane decoration side chain synthesized in comparison its alternating PTQ11. Relative to molecular weight ( M n ) 28.3 kg mol −1 PTQ11, the minor beneficial achieving higher up 51.1 . In addition, can show stronger aggregation ability faster charge mobility as well more efficient exciton dissociation active layer revealed by femtosecond transient absorption spectroscopy. With L8‐BO‐F acceptor, based OSCs display power conversion efficiency (PCE) 18.08%, much than 16.21% PTQ11 devices. another acceptor BTP‐H2 optimize photovoltaic performance PMQ‐Si605, further elevated PCEs 18.50% 19.15% be achieved binary ternary OSCs, respectively. Furthermore, layers are suitable processing high humidity air, an important factor massive production OSCs. Therefore, on promising, affording high‐performing candidate.

Language: Английский

Citations

30
Three‐in‐One Strategy Enables Single‐Component Organic Solar Cells with Record Efficiency and High Stability DOI
Yujun Cheng, Bin Huang,

Qilong Mao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(19)

Published: Feb. 7, 2024

Abstract Single‐component organic solar cells (SCOSCs) with covalently bonding donor and acceptor are becoming increasingly attractive because of their superior stability over traditional multicomponent blend (OSCs). Nevertheless, the efficiency SCOSCs is far behind state‐of‐the‐art OSCs. Herein, by combination advantages three‐component single‐component devices, this work reports an innovative three‐in‐one strategy to boost performance SCOSCs. In strategy, three independent components (PM6, D18, PYIT) linked together create a new active layer based on ternary conjugated block copolymer (TCBC) PM6‐D18 ‐b‐ PYIT facile polymerization. Precisely manipulating component ratios in polymer chains able broaden light utilization, promote charge dynamics, optimize, stabilize film morphology, contributing simultaneously enhanced Ultimately, PYIT‐based device exhibits power conversion (PCE) 14.89%, which highest reported Thanks aggregation restriction each chain entanglement system, SCOSC displays significantly higher than corresponding two‐component (PM6‐D18:PYIT) (PM6:D18:PYIT). These results demonstrate that promising for developing stability.

Language: Английский

Citations

20