Materials and methods for encapsulation of OPV: A review

Ahmad, Jakaria; Bazaka, Kateryna; Anderson, Liam J.; White, R. D.; Jacob, Mohan V.

doi:10.1016/j.rser.2013.06.027

Cited by 187 publications

(160 citation statements)

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“…Additionally, disposability of OPDs and hybrid PDs is not expected to be a major problem due to potential future low cost of such devices. Moreover, encapsulation approaches to minimize adverse effects of moisture and O2 are available as was developed for OLEDs [94][95][96], which will extend the operational lifetime of the OPDs. Short wavelength irradiation is known to adversely affect solar cells [97], though this is less of an issue for OPDs that are typically exposed to lower intensity longer wavelengths.…”

Section: Stabilitymentioning

confidence: 99%

Organic Photodetectors in Analytical Applications

et al. 2015

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This review focuses on the utilization of organic photodetectors (OPDs) in optical analytical applications, highlighting examples of chemical and biological sensors and lab-on-a-chip spectrometers. The integration of OPDs with other organic optical sensor components, such as organic light emitting diode (OLED) excitation sources and thin organic sensing films, presents a step toward achieving compact, eventually disposable all-organic analytical devices. We discuss recent advances in developing and integrating OPDs for various applications as well as challenges faced in this area.

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Section: Stabilitymentioning

confidence: 99%

Organic Photodetectors in Analytical Applications

et al. 2015

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“…Organic thin film materials have many potential and implemented applications, from biocompatible and antifouling coatings in medical devices to protective coatings, waveguides and component materials in optoelectronic devices, such as flexible organic electroluminescent devices (OLED), organic photovoltaics (OPV) and organic thin film transistors (OTFT) [1][2][3][4][5][6]. The motivation for using organic materials stems from their chemical versatility, low cost, low temperature fabrication and ability for reel-to-reel printing, as well as mechanical flexibility [1].…”

Section: Introductionmentioning

confidence: 99%

“…The motivation for using organic materials stems from their chemical versatility, low cost, low temperature fabrication and ability for reel-to-reel printing, as well as mechanical flexibility [1]. The attractive synthetic and processing flexibility of organic materials allows for fine tuning of their properties to achieve a desired combination of optoelectronic, physicochemical, mechanical and biological characteristics, and controlling the manner in which these materials interact with relevant liquids [7].…”

Section: Introductionmentioning

confidence: 99%

“…Solution processing of electronic circuits demands dielectric interlayer stability in organic solvents and strong interfacial adhesion, while the susceptibility of the coating to the uptake of moisture is critical for OPV encapsulation applications. Surface wetting by physiological fluids is a key determinant of biocompatibility and degradation under in vitro and in vivo conditions [1,8]. The surface-solvent kinetics and ensuing degradation of organic materials under aqueous conditions is an important consideration for biodegradable and compostable electronics, where it would affect both operational performance and the physical transience of the device [9].…”

Section: Introductionmentioning

confidence: 99%

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Wetting, Solubility and Chemical Characteristics of Plasma-Polymerized 1-Isopropyl-4-Methyl-1,4-Cyclohexadiene Thin Films

et al. 2014

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Investigations on the wetting, solubility and chemical composition of plasma polymer thin films provide an insight into the feasibility of implementing these polymeric materials in organic electronics, particularly where wet solution processing is involved. In this study, thin films were prepared from 1-isopropyl-4-methyl-1,4-cyclohexadiene (γ-Terpinene) using radio frequency (RF) plasma polymerization. FTIR showed the polymers to be structurally dissimilar to the original monomer and highly cross-linked, where the loss of original functional groups and the degree of cross-linking increased with deposition power. The polymer surfaces were hydrocarbon-rich, with oxygen present in the form of O-H and C=O functional groups. The oxygen content decreased with deposition power, with films becoming more hydrophobic and, thus, less wettable. The advancing and receding contact angles were investigated, and the water advancing contact angle was found to increase from 63.14° to 73.53° for thin films prepared with an RF power of 10 W to 75 W. The wetting envelopes for the surfaces were constructed to enable the prediction of the surfaces' wettability for other solvents. The effect of roughness on the wetting behaviour of the films was insignificant. The polymers were determined to resist solubilization in solvents commonly used in the deposition of organic semiconducting layers, including chloroform and chlorobenzene, with higher stability observed in films fabricated at higher RF power. OPEN ACCESSCoatings 2014, 4 528

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confidence: 99%

P3HT/CdSe/WS2 Composites for Hybrid Photovoltaics: Structural and Morphological Properties

Generosi¹,

Guaragno²,

Luccio³

et al. 2017

Proceedings of the 2nd World Congress on New Technologies

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Extended AbstractCurrently, energy demands and concerns on climate change issues are rapidly increasing and much research attention is dedicated to the development of novel strategies to obtain renewable clean energy, photovoltaics being a promising example [1]. In particular, to take advantage of the appealing properties of both organic and inorganic materials, hybrid solar cells (HOSCs) based on conjugated polymers, quantum dots and nanowires are now of great interest. However, to reach attracting electrical performances that are essential to the development of complete HOSCs, the optimization of the architecture and the active materials structural and morphological properties are crucial aspects [2].In this work, this critical topic is addressed for an original hybrid nanocomposite ternary system based on tungsten disulfide nanotubes (WS 2 NTs) and cadmium selenide quantum dots (CdSe QDs) embedded into a Poly(3-hexylthiophene-2,5-diyl) (P3HT) polymeric matrix, by means of an unconventional Energy Dispersive X-ray Diffraction technique combined with Atomic Force Microscopy and Raman spectroscopy.Morphology and structure influence charge transport properties of the composite material [3,4]: not only the energy gap values and the absorption properties of P3HT and WS 2 NTs depend on the polymeric side chains organization and the diameter of the NTs respectively, but performances of the devices could be strongly improved if structural requirements for a directional charge transport are achieved introducing the CdSe QDs. Consequently, a comprehensive understanding of the characteristics of both binary and ternary compounds is critical in order to unveil their possible applications.This work proved, as a first step, the morphological and structural stability of binary compounds based on WS 2 nanostructures blended into a P3HT matrix. The subsequent addition of CdSe QDs resulted in decoration of the WS 2 NTs and a more homogenous dispersion of the inorganic compounds into the polymeric film was obtained: both results are essential for possible application of this ternary compound in hybrid organic/inorganic photovoltaic cells. Raman spectroscopy supported the crystallographic evidence of CdSe dot configuration and the absence of bulk material that would have been detrimental for application in HOSCs.Moreover the effect of post deposition 120°C thermal annealing was considered. An improvement of the structural properties of the polymeric matrix was observed but most significantly the thermal treatment induced an electronic conversion in WS 2 NTs, detected by Raman spectroscopy. Indeed these nanostructures are essential to mechanically stabilize the organic/inorganic blend, but they also act as charge directional transporters when electronically active and properly decorated with charge collectors as the CdSe dots.These experimental evidences disclose the structural and morphological properties of CdSe QDs/WS 2 -NTs polymer composites, promoting further development of complete HOSCs based on this ternary system.

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Materials and methods for encapsulation of OPV: A review

Cited by 187 publications

References 163 publications

Organic Photodetectors in Analytical Applications

Organic Photodetectors in Analytical Applications

Wetting, Solubility and Chemical Characteristics of Plasma-Polymerized 1-Isopropyl-4-Methyl-1,4-Cyclohexadiene Thin Films

P3HT/CdSe/WS2 Composites for Hybrid Photovoltaics: Structural and Morphological Properties

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