Ethylenedioxythiophene‐Based Small Molecular Donor with Multiple Conformation Locks for Organic Solar Cells with Efficiency of 19.3 % DOI
Qian Xie,

Xiangmeng Deng,

Chaowei Zhao

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(25)

Published: April 16, 2024

Abstract Ternary organic solar cells (T‐OSCs) represent an efficient strategy for enhancing the performance of OSCs. Presently, majority high‐performance T‐OSCs incorporates well‐established Y‐acceptors or donor polymers as third component. In this study, a novel class conjugated small molecules has been introduced component, demonstrating exceptional photovoltaic in T‐OSCs. This innovative molecule comprises ethylenedioxythiophene (EDOT) bridge and 3‐ethylrhodanine end group, with EDOT unit facilitating creation multiple conformation locks. Consequently, EDOT‐based exhibits two‐dimensional charge transport, distinguishing it from thiophene‐bridged molecule, which displays fewer locks provides one‐dimensional transport. Furthermore, robust electron‐donating nature imparts cascade energy levels relative to electron acceptor. As result, OSCs incorporating component demonstrate enhanced mobilities, yielding remarkable efficiency 19.3 %, surpassing 18.7 % observed thiophene‐based The investigations study underscore excellence building block constructing materials high carrier thereby contributing elevated

Language: Английский

Highly Durable Inverted Inorganic Perovskite/Organic Tandem Solar Cells Enabled by Multifunctional Additives DOI Creative Commons
Yanxun Li, Yichao Yan, Yúang Fu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 19, 2024

Abstract Inverted perovskite/organic tandem solar cells (P/O TSCs) suffer from poor long‐term device stability due to halide segregation in organic–inorganic hybrid wide‐band gap (WBG) perovskites, which hinders their practical deployment. Therefore, developing all‐inorganic WBG perovskites for incorporation into P/O TSCs is a promising strategy because of superior under continuous illumination. However, these inorganic also face some critical issues, including rapid crystallization, phase instability, and large energy loss, etc . To tackle two multifunctional additives based on 9,10‐anthraquinone‐2‐sulfonic acid (AQS) are developed regulate the perovskite crystallization by mediating intermediate phases suppress through redox‐shuttle effect. By coupling with organic cations having desirable functional groups dipole moments, can effectively passivate defects adjust alignment interface levels. Consequently, record V oc approaching 1.3 high power conversion efficiency (PCE) 18.59 % could be achieved 1.78 eV band single‐junction inverted PSC. More importantly, TSC derived this cell demonstrates T 90 lifetime 1000 h operation, presenting most stable reported so far.

Language: Английский

Citations

5
Novel Materials for Semi-Transparent Organic Solar Cells DOI Creative Commons
Muhammad Azhar Ansari, Giovanni Ciampi, Sergio Sibilio

et al.

Energies, Journal Year: 2024, Volume and Issue: 17(2), P. 333 - 333

Published: Jan. 9, 2024

The rapid development of photovoltaic technology has driven the search for novel materials that can improve cost-effectiveness and efficiency solar cells. Organic semiconductors offer unique optical tunability transparency, allowing customization absorption specific spectra like near-infrared radiation. Through molecular engineering electron donors acceptors, these be optimized targeted selectivity. This adaptability enables efficient energy-harvesting devices tailored spectral regions. Consequently, organic present a promising avenue specialized applications such as semi-transparent review offers detailed summary latest developments in semiconductor materials, focusing on design principles synthesis context Optimization architecture, performance, optoelectronic properties been explored, highlighting their potential next-generation energy conversion.

Language: Английский

Citations

4
Self-Assembled Monolayer Engineered ZnO Electron Transport Layer to Improve the Photostability of Organic Solar Cells DOI

Kidan G. Gebremariam,

Fekadu Gashaw Hone, Asfaw Negash

et al.

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(14), P. 13304 - 13314

Published: July 4, 2024

The degradation of organic solar cells (OSCs) can occur in any the layers, underlining importance each layer prolonging their lifetime. To enhance performance and stability inverted OSCs (i-OSCs), interfacial modification has been employed. In this context, two self-assembled monolayers (SAMs), namely, octadecanthiol (ODT) octadecyltrimethoxysilane (OTMS), were utilized to effectively passivate typical surface defects ZnO electron transport (ETL). SAM-treated films found be more hydrophobic, which reduced produced by adsorbed oxygen hydroxyl groups. Consequently, power conversion efficiency (PCE) i-OSCs comprising an indacenodithieno[3,2-b]thiophene-alt-5,5-di(thiophen-2-yl)-2,2-bithiazole (PIDTT-DTBTz) donor blended with [6,6]-phenyl-C71-butyric acid methyl ester (PC70BM) acceptor increased from 4.20% pristine ZnO- 5.01 5.37% ODT- OTMS-treated ZnO-based devices, respectively. addition, photostability device substantially improved. Hence, devices based on treated ODT OTMS kept 76 89% initial PCE, respectively, while retained only 66% PCE after 48 h irradiation. improved extended lifetime attributed enhanced charge transfer, reduction both bimolecular trap-assisted recombination processes, interface between ETL active layer. Moreover, it observed that ETL-based i-OSC offers better efficient compared ODT-treated devices. This favorable dipole moment generated electrostatic potential at anchor group, promotes performance.

Language: Английский

Citations

4
Piperazine‐Functionalized Arylene Diimides as Electron Transport Layers for High‐Efficiency and Stable Organic Solar Cells DOI
Yi Li, Lixin Wang, Huiting Fu

et al.

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

Published: Dec. 6, 2024

Abstract In organic solar cells (OSCs), electron transport layer (ETL) materials are typically designed with highly polar groups to lower the work function (WF) of cathode and ensure solvent orthogonality. However, increased surface energy associated these results in significant hygroscopicity poor interfacial contact active layer, posing a challenge for interlayer engineering that must balance device efficiency stability. Herein, two novel arylene diimides (PDI‐P NDI‐P) developed side chains end‐capped piperazine groups, as opposed commonly used amine groups. As ETLs, not only exhibit excellent conductivity but also effectively WF silver cathode. Compared amine‐functionalized perylene diimide (PDI‐N), piperazine‐functionalized (PDI‐P) exhibits reduced hygroscopicity, resulting improved wettability decreased moisture sensitivity. These characteristics contribute enhanced The PDI‐P ETL is compatible various high‐performance acceptor materials, achieving high efficiencies across wide thickness range ≈7 30 nm, maximum 19.8%. findings highlight great potential an high‐efficiency stable OSCs.

Language: Английский

Citations

4
Control Over Vertical Composition in Low Complexity Polymer Solar Cells DOI Open Access
Xinyun Dong, Byongkyu Lee, Runqiao Song

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Abstract Inverted organic solar cells are promising due to their better stability compared conventional structures. Donors with low synthetic complexity desirable lower costs. However, inverted devices rarely used in low‐complexity systems. To investigate the reasons, PTQ10:BTP‐eC9 binary system is benchmarked against high‐complexity PM6:BTP‐eC9 system. In PTQ10:BTP‐eC9, where efficiency of lags structure significantly, distinct wetting layers observed and device Conversely, vertical distribution remains unaffected by changes interlayer materials. The surface always enriched BTP‐eC9, but less for PM6. Importantly, addition PC 71 BM reduces nonuniform composition gradients. As concentration increases, PTQ10 approach that PTQ10:BTP‐eC9:PC (1:1.2:0.4) exhibits negligible differences between (14.01%) (14.49%) architectures. concentration‐gradients aredriven interfacial energy active layer materials casting kinetics case surface. Understanding thermodynamic kinetic aspects provides valuable insights optimizing performance cells, bringing them closer practical applications.

Language: Английский

Citations

0
Donor‐Interacting Arylated Carbazole Self‐Assembled Monolayer Enables Highly Efficient and Stable Organic Photovoltaics DOI Open Access
Yiwen Wang, Wenlin Jiang,

Le Mei

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Carbazole-derived self-assembled monolayers (SAMs) are promising materials for hole-extraction layer (HEL) in conventional organic photovoltaics (OPVs). Here, a SAM Cbz-2Ph derived from 3,6-diphenylcarbazole is demonstrated. The large molecular dipole moment of allows the modulation electrode work function to facilitate hole extraction and maximize photovoltage, thus improving OPV performance. Additionally, flanking aryls help establish CH-π interactions forming dense well-organized HEL exhibit stronger van der Waals with donor PM6 than acceptor BTP-eC9. SAM-donor modulate distribution PM6:BTP-eC9 bulk-heterojunction film, leading enrichment near efficient ITO anode p-i-n OPVs. Consequently, binary PM6:BTP-eC9-based devices incorporating demonstrate an impressive efficiency 19.18%. These cells also showcase excellent operational stability, T80 lifetime ≈1260 h at maximum power point, over 10 times longer those using traditional PEDOT:PSS (T80 ≈96 h). Furthermore, universal applicability as evident through its successful implementation PM6:BTP-eC9:L8-BO-F-based ternary printed devices, achieving PCE 19.30% 16.96%, respectively.

Language: Английский

Citations

0
Peeping into the Conversion Efficiency of Organic Photovoltaic Cells: Donor–Acceptor materials, Current Trends, Scope, and Relevance DOI
Anupam Sharma,

Anjali Kumari,

Ajay Kumar Sharma

et al.

Journal of Electronic Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Language: Английский

Citations

0
Literature Review on Conjugated Polymers as Light-Sensitive Materials for Photovoltaic and Light-Emitting Devices in Photonic Biomaterial Applications DOI Open Access
Paolo Coghi, Carmine Coluccini

Polymers, Journal Year: 2024, Volume and Issue: 16(10), P. 1407 - 1407

Published: May 15, 2024

Due to their extended p-orbital delocalization, conjugated polymers absorb light in the range of visible–NIR frequencies. We attempt exploit this property create materials that compete with inorganic semiconductors photovoltaic and light-emitting materials. Beyond competing for applications photonic devices, organic compounds, polymers, small molecules have also been biomedical like phototherapy biodetection. Recent research on has focused bioapplications based absorbed energy conversions electric impulses, chemical energy, heat, emission. In review, we describe working principles those devices applied researched field biomaterials.

Language: Английский

Citations

3
Small molecular donor materials based on β–β-bridged BODIPY dimers with a triphenylamine or carbazole unit for efficient organic solar cells DOI

Minhao Zhu,

Tingting Gu,

Xü Liang

et al.

Dalton Transactions, Journal Year: 2024, Volume and Issue: 53(28), P. 11981 - 11994

Published: Jan. 1, 2024

Design and synthesis of two BODIPY dimer-based small molecules functionalized with triphenylamine (TPA, ZMH-1) carbazole (CZ, ZMH-2) units as the electron donor. Ternary OSCs based on ZMH-1 ZMH-2 reach PCEs 13.7% 12.7%, respectively.

Language: Английский

Citations

3
Thickness Insensitive UV Blocking Layer Meliorating Carrier Extraction and Deep Trap towards Stable Organic Solar Cells DOI Open Access

Xianglun Xie,

Xinkang Wang,

Jiafeng Zhang

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Abstract The photostability of organic solar cells (OSCs) is extremely crucial to their commercial application. Herein, double‐layered anode interface layer (DL‐AIL) with ultraviolet (UV) absorber BP2 constructed by layer‐by‐layer processing simultaneously improve power‐conversion efficiencies (PCEs) and OSCs. DL‐AIL exhibits good UV absorbance photon utilization due the effective Förster energy transfer from polymer donor. High electric conductivity, optimal work function, improved surface roughness can be obtained as well. based devices also achieve higher PCEs excellent thickness insensitivity, attributed remarkable increase on conductivity reduced transport resistance. More intriguingly, even under irradiation in air xenon lamp band, an extrapolated T 80 lifetime device 85 nm thick reach 1306 h, which approximately 54 times that PEDOT:PSS device. Furthermore, degradation mechanism OSCs different AIL revealed transient charge extraction, capacitance‐voltage capacitance‐frequency. incorporation delivers carrier density constrained deep trap aged devices. Consequently, this new finding demonstrates strategy promote efficiency long‐term stability

Language: Английский

Citations

0