Interfacial Engineering for Photomultiplication Type Organic Photodetectors with Signal‐Noise‐Ratio Over 89 000

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(16)

Published: Jan. 28, 2024

Abstract Photomultiplication type organic photodetectors (PM‐OPDs) exhibit obvious superiority in weak light detection due to their low dark current density ( J D ) and large photo‐induced PI ). The is one of the important parameters that influences sensitivity PM‐OPDs, how effectively suppress a great challenge improve performance PM‐OPDs. In this work, PM‐OPDs can be suppressed by employing PTAA or doped‐PTAA as interfacial layer replacing PEDOT:PSS layer. with 2.3 × 10 −7 A cm −2 under −6 V bias, which much smaller than 1.4 for small molecule DRCN5T incorporated into further passivate surficial defects films, conducive reducing leakage optimal rather 8.4 −8 well external quantum efficiency (EQE) 31700% specific detectivity (D*) 1.2 13 Jones at 370 nm. signal‐noise‐ratio arrives 89600 −4.5 bias white illumination intensity 1.5 mW .

Language: Английский

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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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Over 19.2% efficiency of layer-by-layer organic photovoltaics enabled by a highly crystalline material as an energy donor and nucleating agent

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(14), P. 5173 - 5182

Published: Jan. 1, 2024

By introducing highly crystalline material D18A into donor layer acting as energy and nucleating agent, an optimal PCE of 19.25% was achieved for PM1 : D18A/L8-BO based OPVs.

Language: Английский

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Dual-Band Photomultiplication-Type Organic Photodetectors with Ultrahigh Signal-to-Noise Ratios

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(27), P. 35400 - 35409

Published: June 25, 2024

A series of dual-band photomultiplication (PM)-type organic photodetectors (OPDs) were fabricated by employing a donor(s)/acceptor (100:1, wt/wt) mixed layer and an ultrathin Y6 as the active layers, well using PNDIT-F3N interfacial near indium tin oxide (ITO) electrode. The PM-type OPDs exhibit response range 330–650 nm under forward bias 650–850 reverse bias. tunable spectral or can be explained from trapped electron distribution electrodes. dark current density (JD) efficiently suppressed anode special layers with hole-only transport characteristics. light (JL) slightly increased incorporating wide-bandgap polymer P-TPDs relatively large hole mobility (μh) in layers. signal-to-noise ratios optimized reach 100,980 −50 V white illumination intensity 1.0 mW·cm–2, benefiting ultralow JD buffer JL appropriate P-TPD

Language: Английский

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Eco-friendly solvent-processed layer-by-layer ternary all-polymer solar cells exhibiting over 18.5% efficiency

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152558 - 152558

Published: May 25, 2024

Language: Английский

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Over 17.1% or 18.2% Efficiency of Layer-by-Layer All-Polymer Solar Cells via Incorporating Efficient Pt Complexes as Energy Donor Additive

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(7), P. 2964 - 2973

Published: June 12, 2024

Layer-by-layer (LbL) all-polymer solar cells (APSCs) are constructed with or without the incorporation of a Pt complex F-Pt as an energy donor additive in acceptor layer. The power conversion efficiency (PCE) LbL APSCs can be enhanced from 15.86% to 17.14% through introducing 0.2 wt % PY-IT layer, originating efficient transfer PM6 and PY-IT. well confirmed spectral overlapping between photoluminescence (PL) spectra absorption PY-IT, prolonged PL lifetime according transient time-resolved blend films. universality strategy further PBQx-TCl/PY-DT based APSCs, PCE increased 17.57% 18.29% by incorporating into PY-DT

Language: Английский

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Efficient Dual Mechanisms Boost the Efficiency of Ternary Solar Cells with Two Compatible Polymer Donors to Exceed 19%

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(21)

Published: Feb. 9, 2024

Abstract Ternary strategyopens a simple avenue to improve the power conversion efficiency (PCE) of organic solar cells (OSCs). The introduction wide bandgap polymer donors (PDs) as third component canbetter utilize sunlight and mechanical thermal stability active layer. However, efficient ternary OSCs (TOSCs) with two PDs are rarely reported due inferior compatibility shortage match acceptors. Herein, PDs‐(PBB‐F PBB‐Cl) adopted in dual‐PDs systems explore underlying mechanisms their photovoltaic performance. findings demonstrate that components exhibit excellent miscibility PM6 embedded host donor form alloy‐like phase. A more profound mechanism for enhancing through dual mechanisms, guest energy transfer charge transport at donor/acceptor interface, has been proposed. Consequently, PM6:PBB‐Cl:BTP‐eC9 TOSCs achieve PCE over 19%. Furthermore, better than binary reduction spatial site resistance resulting from tightly entangled long‐chain structure. This work not only provides an effective approach fabricate high‐performance TOSCs, but also demonstrates importance developing compatible PD materials.

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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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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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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