Dyes and Pigments, Journal Year: 2021, Volume and Issue: 198, P. 109963 - 109963
Published: Nov. 23, 2021
Language: Английский
Advanced Science, Journal Year: 2020, Volume and Issue: 7(11)
Published: April 22, 2020
Abstract The organic solar cell (OSC) is a promising emerging low‐cost thin film photovoltaics technology. power conversion efficiency (PCE) of OSCs has overpassed 16% for single junction and 17% organic–organic tandem cells with the development low bandgap materials synthesis device processing main barrier commercial use poor stability devices. Herein, factors limiting are summarized. oxygen, water, irradiation, heating, metastable morphology, diffusion electrodes buffer layers materials, mechanical stress. recent progress in strategies to increase surveyed, such as material design, engineering active layers, employing inverted geometry, optimizing using stable encapsulation materials. International Summit on Organic Photovoltaic Stability guidelines also discussed. potential research achieve required highlighted, rendering possible pathways facilitate viable commercialization OSCs.
Language: Английский
Citations
427
Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)
Published: Jan. 20, 2021
Abstract Solution-processed organic solar cells (OSCs) are a promising candidate for next-generation photovoltaic technologies. However, the short exciton diffusion length of bulk heterojunction active layer in OSCs strongly hampers full potential to be realized these OSCs. Herein, we report high-performance with pseudo-bilayer architecture, which possesses longer benefited from higher film crystallinity. This feature ensures synergistic advantages efficient dissociation and charge transport enabling power conversion efficiency (17.42%) achieved compared those architecture (16.44%) due short-circuit current density fill factor. A certified 16.31% is also ternary OSC layer. Our results demonstrate excellent used future applications.
Language: Английский
Citations
197
Advanced Materials, Journal Year: 2022, Volume and Issue: 34(31)
Published: June 14, 2022
Organic solar cells (OSCs) are promising candidates for next-generation photovoltaic technologies, with their power conversion efficiencies (PCEs) reaching 19%. However, the typically used spin-coating method, toxic halogenated processing solvents, and conventional bulk-heterojunction (BHJ), which causes excessive charge recombination, hamper commercialization further efficiency promotion of OSCs. Here, a simple but effective dual-slot-die sequential (DSDS) strategy is proposed to address above issues by achieving continuous solution supply, avoiding solubility limit nonhalogen creating graded-BHJ morphology. As result, an excellent PCE 17.07% obtained device processed o-xylene in open-air environment no post-treatment required, while over 14% preserved wide range active-layer thickness. The unique film-formation mechanism identified during DSDS processing, suggests formation morphology mutual diffusion between donor acceptor subsequent progressive aggregation. structure leads improved transport, inhibited thus PCE. Therefore, newly developed approach can effectively contribute realm high-efficiency eco-friendly OSCs, also possibly be generalized other organic photoelectric devices.
Language: Английский
Citations
98
Organic Electronics, Journal Year: 2021, Volume and Issue: 90, P. 106063 - 106063
Published: Jan. 13, 2021
Language: Английский
Citations
79
Solar RRL, Journal Year: 2021, Volume and Issue: 5(5)
Published: March 17, 2021
Opaque and semitransparent organic solar cells (ST‐OSCs) have made tremendous progress in recent years. Efficiencies over 18% 13% been demonstrated for opaque ST‐OSCs, respectively. OSCs do not contain unfavorable elements such as lead, which makes them available broader potential applications when compared with other lead‐contained thin‐film cells. There has also the extremely appealing promising emerging building‐integrated photovoltaics. Herein, a review field is presented helping researchers better understand ST‐OSCs further realize their potentials. Recent strategies based on three perspectives are summarized, including electrode engineering, active layer device engineering. A wide range of where can be used discussed challenges future developments pointed out. Finally, outlook research directions presented.
Language: Английский
Citations
60
Advanced Materials, Journal Year: 2020, Volume and Issue: 32(50)
Published: Nov. 9, 2020
Abstract Exciton lifetime (τ) is crucial for the migration of excitons to donor/acceptor interfaces subsequent charge separation in organic solar cells (OSCs); however, obvious prolongation τ has rarely been achieved. Here, by introducing a solid additive 9‐fluorenone‐1‐carboxylic acid (FCA) into active layer, which comprises nonfullerene acceptor, 3,9‐bis(2‐methylene‐((3‐(1,1‐dicyanomethylene)‐6/7‐methyl)‐indanone))‐5,5,11,11‐tetrakis(4‐hexylphenyl)‐dithieno[2,3‐d:2′,3′‐d′]‐s‐indaceno[1,2‐b:5,6‐b′]dithiophene (IT‐M), substantially prolonged from 491 928 ps, together with increases fluorescence intensity and quantum yield. Time‐resolved transient infrared spectra indicate presence an intermolecular vibrational coupling between electronic excited state IT‐M ground FCA, first observed here can suppress internal conversion process. IT‐M‐based OSCs display improved short‐circuit current fill factor after addition FCA. Thus, power efficiency increased, particularly devices large ratio 1:4, whose increased 56%. This study describes novel method, also applicable other acceptors, further improving performance without affecting their morphology light absorption properties.
Language: Английский
Citations
68
Journal of Materials Chemistry C, Journal Year: 2021, Volume and Issue: 9(39), P. 13972 - 13980
Published: Jan. 1, 2021
The photo-degradation mechanism of OSCs based on PM6:Y6 or its derivatives is studied. Ultraviolet photons cause more severe in than others, and the PM6 can dominate devices.
Language: Английский
Citations
47
Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(43)
Published: Aug. 11, 2022
Abstract Side chain engineering is a widely explored strategy in the molecular design for non‐fullerene acceptors (NFAs). Although relationship between side structures and optoelectronic properties of NFAs well clarified, effect on stability their corresponding organic solar cells (OSCs) rarely reported. Herein, series Y‐family with varying side‐chains are studied to investigate degradation upon multiple stresses including water, oxygen from ambient, chemical environment ZnO electron transport layer, temperature, ultraviolet light. The results show that all these highly stable against water ambient dark condition, while photochemical thermal stabilities decrease increasing length. shorter chains not only more resistant photo‐oxidation photocatalytic reactions, but also can hamper formation large phase‐separated NFA domains storage both glovebox conditions. As such, PM6:NFA OSC short side‐chain exhibits superior operational stability, associating higher T 80 lifetime. This study demonstrates must be considered obtain OSCs.
Language: Английский
Citations
36
Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)
Published: May 20, 2024
Abstract Tandem solar cells owing to their layered structure in which each sub-cell utilizes a certain part of the spectrum with reduced thermal losses, are promising applicants promote power conversion efficiency beyond Shockley–Queisser limit single-junction cells. This study delves into performance and optimization 4-terminal organic/silicon tandem through numerical simulations using SCAPS-1D software. The architecture combining organic, perovskite, silicon materials, shows potential enhancing light absorption across complementary spectra. Through innovative material exploration, techniques explored advance boundaries employs Beer–Lambert law assess impact varied physical parameters on cell efficiency, aiming propose optimal configurations. Results indicate maximum 25.86% P 3 HT:PC 70 BM organic active layer (150 nm thickness) 36.8% Cs 2 AgBi 0.75 Sb 0.25 Br 6 (400 studied structures. These findings offer valuable insights complex physics these cells, for developing high-performance commercially practical photovoltaic devices.
Language: Английский
Citations
7
ACS Applied Materials & Interfaces, Journal Year: 2020, Volume and Issue: 12(24), P. 27433 - 27442
Published: May 22, 2020
Organic solar cells (OSCs) have again become a hot research topic in recent years. The record power conversion efficiency (PCE) of OSCs has boosted to over 17% 2020. Apart from the high PCE, stability is also critical for their future applications and commercialization. Recently, many studies proposed that burn-in degradation can be considered as an ineluctable barrier long-term stable OSCs. However, there still lack explain detailed mechanism this process. In work, we first investigated process high-efficiency PM6:N3-based nonfullerene device achieved profound average PCE 14.10% but showed significant performance loss after degradation. Following characterizations such dark J–V, photoluminescence (PL), time-resolved PL, Urbach energy estimation, electrochemical impedance spectroscopy reveal observed closely related current extraction, transfer, nonradiative recombination, charge transport device. At same time, it small effects on exciton dissociation energetic disorder Atomic force microscopy, scanning electron transmission grazing incidence X-ray diffraction measurements gratifyingly found morphology PM6:N3 active layer relatively during Therefore, these degradations are suspected results instability interfaces electrodes. atoms carrier layers electrodes may diffuse degradation, which changes levels each causes traps at interface layer. Conquering prior task achieve stability. Our study provides insights into behind OSCs, takes step conquer barrier.
Language: Английский
Citations
48