Over 18.2% efficiency of layer–by–layer all–polymer solar cells enabled by homoleptic iridium(III) carbene complex as solid additive

Science Bulletin, Journal Year: 2024, Volume and Issue: 69(18), P. 2862 - 2869

Published: July 15, 2024

Language: Английский

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Narrowband Organic Photodetectors: From Fundamentals to Prospects

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(31)

Published: Aug. 27, 2024

Abstract Organic photodetectors (OPDs) have achieved rapid development due to the emergence of organic semiconducting materials with high absorption coefficient and tunable optical bandgap, as well progress in device physics engineering. The working mechanism fundamental parameters OPDs are briefly introduced. Some smart strategies for realizing performance photovoltaic type narrowband (PV‐NB‐OPDs) photomultiplication (PM‐NB‐OPDs) comprehensively reviewed. recent PV‐NB‐OPDs PM‐NB‐OPDs is systematically introduced from fundamentals prospects, exhibiting colorful application potential full‐color imaging, spectroscopic photodetection, medical monitoring, communication, which may promote their applications.

Language: Английский

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Cascaded Energy and Charge Transfer Synergistically Prompting 18.7% Efficiency of Layered Organic Solar Cells with 1.48 eV Bandgap

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

Published: Jan. 2, 2025

Abstract Series of layer‐by‐layer organic solar cells (LOSCs) are constructed by sequentially spin‐coating donor layer and acceptor layers. A champion power conversion efficiency (PCE) 18.79% is achieved from the LOSCs with PBQx‐TCl/ITIC/PY‐DT as active layers, which should be one top values among OSCs optical bandgap over 1.48 eV. The middle material ITIC has a complementary photon harvesting range PBQx‐TCl PY‐DT, leading to enhanced Meanwhile, can play vital role in energy charge transfer relay increase exciton utilization transport, confirmed varied FFs normal or inverted ITIC/PY‐DT PY‐DT/ITIC Over 7% PCE improvement employing form cascaded This work may provide an efficient strategy for improving performance LOSCs.

Language: Английский

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Achieving 18.29% efficiency of layer-by-layer all polymer solar cells enabled by iridium complex as energy donor and crystallizing agent

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160359 - 160359

Published: Feb. 1, 2025

Language: Английский

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Over 19.2% Efficiency of Layer‐By‐Layer Organic Photovoltaics by Ameliorating Exciton Dissociation and Charge Transport

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

Published: Jan. 26, 2025

Abstract Layer‐by‐layer (LbL) organic photovoltaics (OPVs) are fabricated with polymer PM1 as donor and small molecule L8‐BO acceptor by employing sequential spin‐coating technology. The BTP‐eC9 PTAA deliberately selected for individually incorporating into layer layer, resulting in the power conversion efficiency (PCE) increased from 18.22% to 19.23%. improvement of performance is attributed synergistically short circuit current density ( J SC ) 27.78 mA cm −2 fill factor (FF) 78.23%. introduction can promote photogenerated exciton dissociation, especially excitons near anode. Meanwhile, molecular crystallinity also enhanced appropriate layer. incorporation provide hole transport channels effectively improve holes generated self‐dissociation L8‐BO, FFs 77.40% synergistic effects layers result a 19.23% PCE optimized LbL‐OPVs. This work demonstrates that there great room hierarchically optimize achieving highly efficient

Language: Английский

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Layered All‐Polymer Solar Cells with Efficiency of 18.34% by Employing Alloyed Polymer Donors

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 7, 2025

Abstract A series of layered all‐polymer solar cells (LA‐PSCs) with the normal or inverted structure are prepared by employing a sequential spin‐coating method PBQx‐TCl, PM1 as polymer donor, and PY‐DT acceptor. The power conversion efficiency (PCE) LA‐PSCs can be improved from 17.20% to 18.34% incorporating 30 wt.% into PBQx‐TCl layer, resulting simultaneously increased J SC 25.35 mA cm −2 , V OC 0.971 FF 74.49%. PCE improvement also achieved PBQx‐TCl:PM1 donor layers. mixed prefer form alloyed states in LA‐PSCs, which confirmed gradually s more content Meanwhile, photogenerated excitons layers dissociated at interface between PM1, especially for located near ITO electrode. exciton dissociation provide an additional channel improving utilization efficiency, positive external quantum spectral difference (∆EQE) values Over 6.6% realized using layer.

Language: Английский

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Progress in research on organic photovoltaic acceptor materials

RSC Advances, Journal Year: 2025, Volume and Issue: 15(4), P. 2470 - 2489

Published: Jan. 1, 2025

In the past two decades, organic solar cells (OSCs) have begun to attract attention as efficiency of inorganic gradually approaches theoretical limit.

Language: Английский

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Achieving light utilization efficiency of 3.88% and efficiency of 14.04% for semitransparent layer-by-layer organic solar cells by diluting donor layer

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161148 - 161148

Published: Feb. 1, 2025

Language: Английский

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Highly Efficient Organic Solar Cells with the Highly Crystalline Third Component as a Morphology Regulator

Small, Journal Year: 2024, Volume and Issue: 20(44)

Published: July 5, 2024

The morphology of the active layer is crucial for highly efficient organic solar cells (OSCs), which can be regulated by selecting a rational third component. In this work, crystalline nonfullerene acceptor BTP-eC9 selected as regulator in OSCs with PM6:BTP-BO-4Cl main system. addition prolong nucleation and crystallization progress donor molecules, thereby enhancing order molecular arrangement. Meanwhile, time earlier than that acceptors after introducing BTP-eC9, beneficial obtaining better vertical structural phase separation. exciton dissociation, charge transport, collection are promoted effectively optimized layer, improves short-circuit current density filling factor. After power conversion efficiencies (PCEs) ternary improved from 17.31% to 18.15%. PCE further 18.39% gold nanopyramid (Au NBPs) into hole transport improve photon utilization efficiency. This work indicates component regulate molecules.

Language: Английский

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Dual-Donor-Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

Nano-Micro Letters, Journal Year: 2024, Volume and Issue: 17(1)

Published: Nov. 27, 2024

Abstract Trap-assisted charge recombination is one of the primary limitations restricting performance organic solar cells. However, effectively reducing presence traps in photoactive layer remains challenging. Herein, wide bandgap polymer donor PTzBI-dF demonstrated as an effective modulator for enhancing crystallinity bulk heterojunction active layers composed D18 derivatives blended with Y6, leading to dense and ordered molecular packings, thus, improves photoluminescence quenching properties. As a result, photovoltaic devices exhibit reduced trap-assisted losses, achieving optimized power conversion efficiency over 19%. Besides enhancement, comprised third component simultaneously attain decreased current leakage, improved carrier mobilities, suppressed bimolecular recombination, energy losses. The advanced crystalline structures induced by its characteristics, such well-aligned level, complementary absorption spectra, are ascribed promising improvements. Our findings suggest that phase engineering feasible approach tuning packings layer, providing guidelines designing morphology modulators high-performance

Language: Английский

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