Zinc Oxide-Perylene Diimide Hybrid Electron Transport Layers for Air-Processed Inverted Organic Photovoltaic Devices

ACS Applied Materials & Interfaces, Год журнала: 2021, Номер 13(41), С. 49096 - 49103

Опубликована: Окт. 12, 2021

In this work, we report the formation of perylene diimide films, from green solvents, for use as electron transporting layers, when combined with ZnO, in inverted-type organic photovoltaics. A modified N-annulated PDI was functionalized a tert-butyloxycarbonyl protecting group to solubilize material, enabling solution processing solvents. Post-deposition treatment films via thermal annealing cleaves yielding known PDIN-H rendering solvent-resistant. The were characterized by optical absorption spectroscopy, contact angle measurements, and atomic force microscopy. When used modify surface ZnO photovoltaics (air-processed tested) based on PM6:Y6 PTQ10:Y6 bulk-heterojunctions, device power conversion efficiency increases 9.8 11.0% 7.2 9.8%, respectively.

Язык: Английский

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New Perylene Diimide Ink for Interlayer Formation in Air-Processed Conventional Organic Photovoltaic Devices

ACS Applied Materials & Interfaces, Год журнала: 2022, Номер 14(38), С. 43558 - 43567

Опубликована: Сен. 13, 2022

Roll-to-roll coating of conventional organic photovoltaic architectures in air necessitates low work function, electron-harvesting interlayers as the top interface, termed cathode interlayers. Traditional materials based on metal oxides are often not compatible with and/or green solvents, require thermal annealing, and limited feasibility due to interactions underlying layers. Alternatively, perylene diimide offer easily tunable redox properties, amenable considered champion organic-based However, mechanisms extraction photogenerated electrons less well understood. Herein, we demonstrate utilization two N-annulated materials, namely, PDIN-H CN-PDIN-H, air-processed devices, using now standard PM6:Y6 photoactive layer. The processing ink formulation cesium carbonate a agent solubilize diimides suitable solvents (1-propanol ethyl acetate) for uniform film formation spin or slot-die layer is critical. Cesium remains film, creating hybrid organic/metal salt Best devices have power conversion efficiencies 13.2% spin-coated interlayer 13.1% slot-die-coated interlayer, superior control classic conjugated polyelectrolyte PFN-Br an (ca. 12.8%). were found be semi-insulating nature, device performance improvements attributed beneficial interfacial effects electron tunneling through sufficiently thin beyond 13% achieved utilizing among highest reported so far, opening new opportunities fabrication large-area solar cell modules.

Язык: Английский

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Application of Buffer Layer to Improve the Efficiency of Organic Solar Cells

Energy Technology, Год журнала: 2023, Номер 12(2)

Опубликована: Дек. 30, 2023

Organic solar cells (OSCs) are widely studied for their advantages such as simple production, low cost, good flexibility, and large‐area printing. The buffer layer between electrodes the photoactive has a significant impact on efficiency stability of OSCs. In order to lower energy barrier height at interface, provide an Ohmic contact with series resistance, increase charge collection corresponding either holes or electrons, suitable electrode materials can be chosen. selection important effect photoelectric conversion efficiency. Therefore, study characteristics certain guiding significance improvement device structure performance optimization. At present, used in OSCs mainly organic polymer materials, small molecule metal fluoride, oxides, so on. Herein, working principle introduced first. Then, properties function summarized discussed. Finally, application common is summarized, how improve described.

Язык: Английский

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Air‐Processed Organic Photovoltaics for Outdoor and Indoor Use Based upon a Tin Oxide‐Perylene Diimide Electron Transporting Bilayer

Advanced Materials Interfaces, Год журнала: 2021, Номер 9(3)

Опубликована: Дек. 8, 2021

Abstract Efficient organic photovoltaics (OPV) based on SnO 2 | perylene diimide (PDI) bilayer as an electron transport layer (ETL) is fabricated and tested in ambient environment. The PTQ10:Y6 photoactive system used the primary bulk‐heterojunction. Without any surface treatment, power conversion efficiency (PCE) of ‐based OPV devices 1.5%. Treating nano‐particles with UV‐ozone then applying a N‐annulated PDI functional NH bond (PDIN‐H) top increase device PCEs to 9.2%. For indoor applications, PCE rises from 8.1% 12.3% when PDIN‐H employed under low light conditions, without need for soaking. ETL slot‐die coated corresponding have 7.9%, demonstrating utility scale‐up. hybrid other systems employing Y6, Y7, IDIC acceptors, well PM6 donor, all these cases yield improved compared ‐only ETLs. These results show successful implementation OPV.

Язык: Английский

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2D alignment of zinc oxide@ZIF8 nanocrystals for photoelectrochemical water splitting

New Journal of Chemistry, Год журнала: 2021, Номер 45(7), С. 3498 - 3507

Опубликована: Янв. 1, 2021

Thin films of zinc oxide nano-sheets loaded with Zeolitic Imidazole Framework 8 nanocrystals were synthesized using electrodeposition and chemical bath deposition for photoelectrochemical application.

Язык: Английский

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Study on Properties of Low-Temperature-Prepared Zinc Oxide-Based Inverted Organic Solar Cells and Improvement of their Photodurability

ACS Applied Energy Materials, Год журнала: 2021, Номер 4(7), С. 6385 - 6390

Опубликована: Июнь 21, 2021

The power conversion efficiency (PCE) of organic solar cells (OSCs) has improved steadily thanks to aggressive research and development efforts. On the other hand, improvement device durability OSCs is also an important factor for practical application OSCs. In this work, we studied photodurability inverted (i-OSCs) with ZnO prepared at 100 250 °C (ZnO100 ZnO250). ZnO100-based i-OSCs much poorer than that ZnO250-based ones. This could have originated from higher photocatalytic activity ZnO100, which relates number surface OH groups adsorbed water species. To suppress fabricated a self-assembled monolayer (SAM) on ZnO100 found surface-treated i-OSC was improved. result indicated can be influenced by conditions SAM modification.

Язык: Английский

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Cellulose Nanocrystals–Tin‐Oxide Hybrid Electron Transport Layers for Solar Energy Conversion

Advanced Materials Interfaces, Год журнала: 2022, Номер 9(30)

Опубликована: Сен. 11, 2022

Abstract Petro‐derived organic cathode interlayers (CILs) can modify the tin‐oxide (SnO 2 ) electron transport layer (ETL) in photovoltaics (OPVs) to address energy‐level alignment, charge extraction, and device shelf‐life instability challenges. However, potential eco‐hazardousness of petro sources used synthesize such CILs toxicity processing solvents warrant discovery sustainable commercially viable substitutes. Herein, a low‐cost, biocompatible, water‐processable CIL based on amine‐functionalized cellulose nanocrystals (CNC‐a) is introduced enhance performance OPVs by mitigating surface defects SnO ETL. X‐ray photoelectron spectroscopy (XPS) reveals reduction water traps after modification with CNC‐a. The electrical characterization shows that CNC‐a improves conductivity . inhibits recombination collection ability leading power conversion efficiencies (PCEs) >13% halogen‐free solvent air‐processed PBDB‐T‐SF (PM6):BTP‐4F‐12 (Y6‐C12)‐based OPVs. /CNC‐a bilayer ETL‐based devices exhibit relatively high stability. Fully slot‐die‐coated (where , CNC‐a, bulk heterojunction [PM6:Y6‐C12] are coated) large area bottom cells (PCE > 10%) demonstrated, showcasing utility for scale‐up. This work opens pathway develop bio‐derived materials scalable

Язык: Английский

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The Use of Green‐Solvent Processable Molecules with Large Dipole Moments in the Electron Extraction Layer of Inverted Organic Solar Cells as a Universal Route for Enhancing Stability

Advanced Sustainable Systems, Год журнала: 2021, Номер 6(2)

Опубликована: Май 5, 2021

Abstract Employing a large dipole interlayer has recently been one of the most captivating interfacial engineering approaches in organic solar cells (OSCs). In this work, effect using green‐solvent processable molecules with moments as electron extraction layers (DM‐EELs) on OSCs’ stability is investigated. The inverted OSCs are based two donor–acceptor systems, histidine and sarcosine representative DM‐EELs ZnO control EEL. Stability results illustrate that while dominant degradation mechanism depends system (photoinduced vs temporal degradation), substantially suppresses enhances both cases. voltage‐dependent ideality factor characteristics show DM‐EEL exhibit minimal recombination changes even after UV exposure. By contrast, limited by significant shunt formation UV‐induced surface recombination. Low‐temperature measurements verify unlike indium tin oxide (ITO)/ZnO contact, ITO/DM‐EEL contact not affected trap states or work function variations. As result, maintains its electron‐selectivity resists observed cells. materials EELs can provide universal route for enhancing OSCs.

Язык: Английский

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Hydrogen-bond-induced cathode engineering interface achieving high-efficiency organic solar cells

Journal of Materials Chemistry C, Год журнала: 2022, Номер 10(16), С. 6358 - 6364

Опубликована: Янв. 1, 2022

Hydrogen formed between accepter Y6 and interlayer 2N-SAM can improve device performance.

Язык: Английский

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N-Annulated Perylene Bisimide-Based Double-Cable Polymers with Open-Circuit Voltage Approaching 1.20 V in Single-Component Organic Solar Cells

ACS Applied Materials & Interfaces, Год журнала: 2022, Номер 14(42), С. 47952 - 47960

Опубликована: Окт. 12, 2022

In this work, we have introduced single/double-sided N-annulated perylene bisimide (PBI) with deep energy levels into double-cable polymers poly[1-(5-(4,8-bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)-6-methylbenzo[1,2-b:4,5-b']dithiophen-2-yl)thiophen-2-yl)-5,7-bis(2-ethylhexyl)-3-(5-methylthiophen-2-yl)-4H,8H-benzo[1,2-c:4,5-c']dithiophene-4,8-dione] (PBDB-T-Cl) as a donor backbone, marking s-PPNR and as-PPNR, according to the molecular symmetry. Both displayed high open-circuit voltage approaching 1.20 V in light of level discrepancy between electron-donating electron-withdrawing parts, which is highest among double-cable-based single-component organic solar cell (SCOSC) devices. Additionally, asymmetric polymer improved absorption spectra, thereby promoting crystallization phase separation. Consequently, as-PPNR-based SCOSCs achieved power conversion efficiency 5.05% along higher short-circuit current density fill factor than their s-PPNR-based counterparts. successfully incorporated PBI revealed important effects on structural symmetry separation for SCOSC performance.

Язык: Английский

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