Surface modified ZnO nanoparticles: structure, photophysics, and its optoelectronic application

Sinha, O. P.; Srivastava, Ritu; Srivastava, Avanish Kumar; Thomas, Som V.; Sood, K.N.; Kamalasanan, M. N.

doi:10.1007/s11051-013-1758-3

Cited by 13 publications

(8 citation statements)

References 17 publications

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“…Singh et al [49] reported the in situ surface modification of ZnO with poly(vinylpyrrolidone). The poly(vinylpyrrolidone) is used for stabilization and surface passivation of synthesized NPs, thus tailoring the growth of ZnO at nanoscale.…”

Section: Surface Modification Of Metal Oxide Nanoparticlesmentioning

confidence: 99%

A review of current coupling agents for modification of metal oxide nanoparticles

Mallakpour

Madani

2015

Progress in Organic Coatings

253

116

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Section: Surface Modification Of Metal Oxide Nanoparticlesmentioning

confidence: 99%

A review of current coupling agents for modification of metal oxide nanoparticles

Mallakpour

Madani

2015

Progress in Organic Coatings

253

116

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“…PVP was used as capping agent to stabilize and surface passivation of synthesized NPs, thus adjusting the growth of ZnO at nanoscale. [173] Grafting to Process: In the grafting to process, presynthesized polymers or functional groups are attached to the surface of NMs. These pre-synthesized molecules typically have reactive end groups that can chemically bond to the surface of the NMs.…”

Section: Polymers As Stabilizersmentioning

confidence: 99%

“…reported the in situ surface modification of ZnO with poly (vinylpyrrolidone) (PVP) by wet chemical route. PVP was used as capping agent to stabilize and surface passivation of synthesized NPs, thus adjusting the growth of ZnO at nanoscale [173] …”

Section: Polymers As Stabilizersmentioning

confidence: 99%

Nanotechnology in the Fabrication of Advanced Paints and Coatings: Dispersion and Stabilization Mechanisms for Enhanced Performance

Azani,

Hassanpour

2024

ChemistrySelect

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This review comprehensively analyzes the challenge of dispersing and stabilizing of various common nanomaterials (NMs), including TiO₂, SiO₂, Ag, ZnO, graphene, carbon nanotubes (CNTs) and some others, in paints and coatings. It delves into the critical factors influencing dispersion, such as nanoparticle size, shape, concentration, and their distribution within the coating matrix.The review encompasses all stages of dispersion methods, including wetting, separation techniques, and stabilization. Regarding stabilization, both chemical and physical stabilization methods are discussed, along with their mechanisms, involving surface modification or functionalization of NMs, particularly tailored for aqueous and solvent‐based coatings and common resins (Acrylic, Urethane, Epoxy, Alkyd, etc.). Furthermore, common blending methods to fabricate uniform paints, coatings, and nanocomposites (NCPs) are examined. By providing a comprehensive understanding of the mechanisms governing NM dispersion and stabilization, this review facilitates the selection of appropriate surface modifications based on the specific resins or solvents, thereby enabling the fabrication of high‐performance paints and coatings. In summary, this review elucidates the essence of addressing the challenges associated with NM dispersion and stabilization, outlines methodologies employed, discusses findings regarding their effects on coating properties, and recommends tailored approaches for fabricating high‐performance paints and coatings.

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“…The ZnO nanoparticle (ZnO-NP) is one of the most researched materials for electron transport layers (ETLs) in organic optoelectronic devices due to its high electron mobility (2 × 10 –3 cm 2 /V s), wide band gap (>3.3 eV), and small diameter (<100 nm). ,− These characteristics lead to high-performance and air-stable OPVs and OPDs; ,− however, they have been rarely used for flexible electronic devices. Fan et al reported improved flexibility of ZnO-NP:polystyrene composite thin films; however, the use of electrically insulating polymers may decrease the electrical properties of ZnO-NP-based ETLs and result in phase separation.…”

Section: Introductionmentioning

confidence: 99%

Flexible Organic Photodetectors with Mechanically Robust Zinc Oxide Nanoparticle Thin Films

Byeon

Kim

Hwang

et al. 2023

ACS Appl. Mater. Interfaces

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Zinc oxide nanoparticle (ZnO-NP) thin films have been intensively used as electron transport layers (ETLs) in organic optoelectronic devices, but their moderate mechanical flexibility hinders their application to flexible electronic devices. This study reveals that the multivalent interaction between ZnO-NPs and multicharged conjugated electrolytes, such as diphenylfluorene pyridinium bromide derivative (DFPBr-6), can significantly improve the mechanical flexibility of ZnO-NP thin films. Intermixing ZnO-NPs and DFPBr-6 facilitates the coordination between bromide anions (from the DFPBr-6) and zinc cations on ZnO-NP surfaces, forming Zn 2+ −Br − bonds. Different from a conventional electrolyte (e.g., KBr), DFPBr-6 with six pyridinium ionic side chains holds the Br − -chelated ZnO-NPs adjacent to DFP + through Zn 2+ −Br − −N + bonds. Consequently, ZnO-NP:DFPBr-6 thin films exhibit improved mechanical flexibility with a critical bending radius as low as 1.5 mm under tensile bending conditions. Flexible organic photodetectors with ZnO-NP:DFPBr-6 thin films as ETLs demonstrate reliable device performances with high R (0.34 A/W) and D* (3.03 × 10 12 Jones) even after 1000 times repetitive bending at a bending radius of 4.0 mm, whereas devices with ZnO-NP and ZnO-NP:KBr ETLs yield >85% reduction in R and D* under the same bending condition.

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Surface modified ZnO nanoparticles: structure, photophysics, and its optoelectronic application

Cited by 13 publications

References 17 publications

A review of current coupling agents for modification of metal oxide nanoparticles

A review of current coupling agents for modification of metal oxide nanoparticles

Nanotechnology in the Fabrication of Advanced Paints and Coatings: Dispersion and Stabilization Mechanisms for Enhanced Performance

Flexible Organic Photodetectors with Mechanically Robust Zinc Oxide Nanoparticle Thin Films

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