Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Sylvianti, Nadhila; Trang, Thu; Marsya, Mutia Anissa; Park, Juyun; Kang, Yong‐Cheol; Kim, Joo Hyun

doi:10.1002/bkcs.10613

Cited by 8 publications

(2 citation statements)

References 33 publications

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“…P4VP was further explored to modify the ZnO layer in inverted OSCs. In disagreement with a recent report by Sylvianti et al on P4VP interface layer, 38 significant increase in V oc from 840 to 890 mV was observed in addition to an improvement in photocurrent after modifying the ZnO interface layer with P4VP. The increased V oc is attributed to (a) the reduced work function of ZnO with P4VP modification as seen from UPS (Figure 2) and (b) the enrichment of PC 71 BM at the P4VP-BHJ interface (as seen from contact angle and UPS measurements), which would result in selective charge extraction at the cathode, which is also known to increase the V oc .…”

Section: Contact Angle and Materials Stratificationcontrasting

confidence: 99%

Poly(4-vinylpyridine): A New Interface Layer for Organic Solar Cells

Sharma

Kroon

Lewis

et al. 2017

ACS Appl. Mater. Interfaces

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Poly(4-vinylpyridine) (P4VP) was used as a cathode interface layer in inverted organic solar cells (OSCs) fabricated using poly[2,3-bis(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl] (TQ1) and PCBM (phenyl C butyric acid methyl ester) as the donor and acceptor materials, respectively. We successfully demonstrate that the work function of underlying indium tin oxide (ITO) electrode can be significantly reduced by ∼0.7 eV, after modification of the surface with a thin film of P4VP. Photoconversion efficiency of 4.7% was achieved from OSCs incorporating P4VP interface layer between the ITO and bulk heterojunction (BHJ). Thin P4VP layer, when used to modify ZnO electron transport layer in inverted OSCs, reduced the ZnO work function from 3.7 to 3.4 eV, which resulted in a noteworthy increase in open-circuit voltage from 840 to 890 mV. On simultaneous modification of ZnO with P4VP and optimization of the BHJ morphology by using solvent additive chloronapthalene, photoconversion efficiency of OSCs was significantly increased from 4.6% to 6.3%. The enhanced device parameters are also attributed to an energetically favorable material stratification, as a result of an enrichment of PCBM toward the P4VP interface.

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Section: Contact Angle and Materials Stratificationcontrasting

confidence: 99%

Poly(4-vinylpyridine): A New Interface Layer for Organic Solar Cells

Sharma

Kroon

Lewis

et al. 2017

ACS Appl. Mater. Interfaces

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“…Moreover, the nitrogen groups in the framework seem to facilitate CO 2 uptake via their Lewis acid–base interactions and additionally stabilize the Cu(II) and Cu(I) cations of the amide-MOF framework. In the past, two different effects of N-based ligands/functionalities have been reported for ERCO 2 : (1) ligand-centered reduction: the ligand is redox-active and can transfer electrons to the CO 2 or any intermediate; , and (2) mixed redox process: where nitrogen-containing groups help in increasing the electron density on the reduced metal center. , N-containing groups may also act as promoters by outer-sphere coordination effects, mass transport effects, and HER suppression. − …”

Section: Resultsmentioning

confidence: 99%

Tailoring Motif and Channel Terminating Groups of Conventional Copper MOFs for Their Enhanced Activity, Selectivity, and Stability toward the Electroreduction of CO₂ to Hydrocarbons

Rashid

Dar

Bhat

et al. 2023

ACS Appl. Energy Mater.

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Judicious tuning of electronic effects, chemical functionalities, and type and distribution of active sites is a promising strategy to manage the selectivity, efficiency, and electrochemical stability of electrocatalysts toward the electrochemical reduction of CO2 (ERCO2). Herein, we report a simple postsynthetic modification to tune electronic effects and Lewis basicity in copper-based three-dimensional (3D) and two-dimensional (2D) metal–organic frameworks (MOFs) involving the chemical transformation of the free −COOH/–OH groups into amide/amine groups that improves their electrocatalytic stability and performance for hydrocarbon production. Detailed structural and voltammetric characterizations reveal that the unique electronic and structure-enhancing effects in the modified MOFs (especially in 2D MOF) endow them with excellent electrocatalytic performance (overall faradaic efficiency (FE) 81%, with FEC1 = 62% and FEC2 = 19%) and stability toward ERCO2 (>4 h). The significantly high FE for the production of hydrocarbons over the modified MOFs is attributed to the improved Lewis acidity of the open metal centers and confined pores resulting in alternate active sites for *CO adsorption, hydrogenation, and C–O bond dissociation.

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Synthesis of Conjugated Copolymer Containing Spirobifluorene Skeleton by Acyclic Diene Metathesis Polymerization for Polymer Light‐Emitting Diode Applications

Park

Jeong

Kang

et al. 2021

Bulletin Korean Chem Soc

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Grubbs‐type, Hoveyda‐type, cyclic alkyl amino carbene (CAAC)‐based ruthenium olefin metathesis catalysts were used for the acyclic diene metathesis (ADMET) polymerization of 2,7‐divinyl‐9,9‐di‐n‐octylfluorene (DVF). Additionally, various ratios of DVF and 2,2′,7,7′‐tetravinyl‐9,9′‐spirobifluorene (TVSF) were subjected to ADMET polymerization to obtain polymers P1–P7. Polymers P1–P4 were analyzed with gel permeation chromatography, UV–vis spectroscopy, and photoluminescence spectroscopy. As the TVSF ratio increases, polymers exhibit lower solubility but a narrower band in the photoluminescence spectrum. Polymer light‐emitting diode (PLED) devices were fabricated with polymers P1, P2, and P3. The performances of the PLED devices indicated that polymers including more spirobifluorene blocks showed better turn‐on voltage, brightness, current efficiency, and power efficiency.

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Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Cited by 8 publications

References 33 publications

Poly(4-vinylpyridine): A New Interface Layer for Organic Solar Cells

Poly(4-vinylpyridine): A New Interface Layer for Organic Solar Cells

Tailoring Motif and Channel Terminating Groups of Conventional Copper MOFs for Their Enhanced Activity, Selectivity, and Stability toward the Electroreduction of CO₂ to Hydrocarbons

Synthesis of Conjugated Copolymer Containing Spirobifluorene Skeleton by Acyclic Diene Metathesis Polymerization for Polymer Light‐Emitting Diode Applications

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Self‐assembled Poly(4‐vinylpyridine) As an Interfacial Layer for Polymer Solar Cells

Cited by 8 publications

References 33 publications

Poly(4-vinylpyridine): A New Interface Layer for Organic Solar Cells

Poly(4-vinylpyridine): A New Interface Layer for Organic Solar Cells

Tailoring Motif and Channel Terminating Groups of Conventional Copper MOFs for Their Enhanced Activity, Selectivity, and Stability toward the Electroreduction of CO2 to Hydrocarbons

Synthesis of Conjugated Copolymer Containing Spirobifluorene Skeleton by Acyclic Diene Metathesis Polymerization for Polymer Light‐Emitting Diode Applications

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Product

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About

Tailoring Motif and Channel Terminating Groups of Conventional Copper MOFs for Their Enhanced Activity, Selectivity, and Stability toward the Electroreduction of CO₂ to Hydrocarbons