Analysis of the Optical Properties of PVP/ZnO Composite Nanofibers

Matysiak, Wiktor; Tański, Tomasz; Zaborowska, Marta

doi:10.1007/978-981-10-1602-8_4

Cited by 7 publications

(8 citation statements)

References 13 publications

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“…Analysis of the absorption spectrum as a function of the wavelength showed a sharp absorption edge-fall at 360 nm wavelength, while the absorption maximum fell at 340 nm wavelength, which is confirmed with the results obtained for pure one-dimensional ZnO nanostructures shown in [56]. The energy gap (E g ) analysis based on the obtained UV-Vis spectrum showed that the investigated ZnO nanostructures were characterized by an E g value of about 3.2 eV [57].…”

Section: Resultssupporting

confidence: 85%

“…The EDS analysis of the chemical composition certified the purity of the ZnO nanopowder and showed the presence of the two elements zinc and oxygen. The applied ZnO material is described in detail in the manuscripts [50,[54][55][56][57]. The XRD analysis carried out for the nanopowder showed the existance of sharp crystalline peaks for 2θ angles: 37.1°, 40.2°, 42.4°, 55.8°, 66.8°, 74.6°,80.9° and 82.4° originating from Miller indices: (010), ( 002), ( 011), ( 012), ( 110), ( 013), ( 112) and (021), respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Fluorine-doped tin oxide (FTO)-coated glass (8 Ω/sq) and titanium dioxide paste (30 NR-D) were purchased from Greatcell Solar Ltd. (Queanbeyan, Australia). The applied ZnO nanopowder is described in detail in the manuscripts [50,[54][55][56][57], but in this paper the…”

Section: Methodsmentioning

confidence: 99%

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Hybrid Mesoporous TiO2/ZnO Electron Transport Layer for Efficient Perovskite Solar Cell

et al. 2023

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In recent years, perovskite solar cells (PSCs) have gained major attention as potentially useful photovoltaic technology due to their ever-increasing power-conversion efficiency (PCE). The efficiency of PSCs depends strongly on the type of materials selected as the electron transport layer (ETL). TiO2 is the most widely used electron transport material for the n-i-p structure of PSCs. Nevertheless, ZnO is a promising candidate owing to its high transparency, suitable energy band structure, and high electron mobility. In this investigation, hybrid mesoporous TiO2/ZnO ETL was fabricated for a perovskite solar cell composed of FTO-coated glass/compact TiO2/mesoporous ETL/FAPbI3/2D perovskite/Spiro-OMeTAD/Au. The influence of ZnO nanostructures with different percentage weight contents on the photovoltaic performance was investigated. It was found that the addition of ZnO had no significant effect on the surface topography, structure, and optical properties of the hybrid mesoporous electron-transport layer but strongly affected the electrical properties of PSCs. The best efficiency rate of 18.24% has been obtained for PSCs with 2 wt.% ZnO.

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 99%

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Hybrid Mesoporous TiO2/ZnO Electron Transport Layer for Efficient Perovskite Solar Cell

et al. 2023

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“…Recently, all polymer solar cells (all-PSCs) with active layers composed of polymer donor (P D ) and polymer acceptor (P A ) have been competitive technologies as an alternative to polymer–fullerene solar cells (PFSCs) [12,13,14,15,16]. Increasing the efficiency of photovoltaic devices based on the use of organic materials, especially in the form of nanostructure elements, is the object of the research of scientists from around the world [17,18,19,20,21,22,23,24]. Currently, state-of-the-art single-junction all-PSCs show a power conversion efficiency (PCE) over 10%, which still lags behind PFSCs, demonstrating a PCE of over 16% [25,26].…”

Section: Introductionmentioning

confidence: 99%

Phase Diagrams of n-Type Low Bandgap Naphthalenediimide-Bithiophene Copolymer Solutions and Blends

et al. 2019

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Phase diagrams of n-type low bandgap poly{(N,N′-bis(2-octyldodecyl)naphthalene -1,4,5,8-bis(dicarboximide)-2,6-diyl)-alt-5,5′,-(2,2′-bithiophene)} (P(NDI2OD-T2)) solutions and blends were constructed. To this end, we employed the Flory–Huggins (FH) lattice theory for qualitatively understanding the phase behavior of P(NDI2OD-T2) solutions as a function of solvent, chlorobenzene, chloroform, and p-xylene. Herein, the polymer–solvent interaction parameter (χ) was obtained from a water contact angle measurement, leading to the solubility parameter. The phase behavior of these P(NDI2OD-T2) solutions showed both liquid–liquid (L–L) and liquid–solid (L–S) phase transitions. However, depending on the solvent, the relative position of the liquid–liquid phase equilibria (LLE) and solid–liquid phase equilibria (SLE) (i.e., two-phase co-existence curves) could be changed drastically, i.e., LLE > SLE, LLE ≈ SLE, and SLE > LLE. Finally, we studied the phase behavior of the polymer–polymer mixture composed of P(NDI2OD-T2) and regioregular poly(3-hexylthiophene-2,5-dyil) (r-reg P3HT), in which the melting transition curve was compared with the theory of melting point depression combined with the FH model. The FH theory describes excellently the melting temperature of the r-reg P3HT/P(NDI2OD-T2) mixture when the entropic contribution to the polymer–polymer interaction parameter (χ = 116.8 K/T − 0.185, dimensionless) was properly accounted for, indicating an increase of entropy by forming a new contact between two different polymer segments. Understanding the phase behavior of the polymer solutions and blends affecting morphologies plays an integral role towards developing polymer optoelectronic devices.

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“…Nanocomposites with organic polymer matrix and inorganic nanofiller attract much attention due to their unique chemical, physical and biological properties. When using nanoparticles of inorganic compounds, such as: titanium dioxide (TiO 2 ) [1], zinc oxide (ZnO) [2] or silicon dioxide (SiO 2 ) [3,4], better mechanical, thermal or optical properties of nanocomposites, relative to matrix material, can be obtained. In view of multitude of processes: sol-gel method [5], in-situ polymerization [6], electrospinning [7], chemical and physical vapor deposition (CVD and PVD) [8][9][10][11] and spin coating [12], which are repeatedly cheaper than commonly used production methods of conventional materials, it is possible to produce innovative nanocomposites, characterized by so far unattainable physical properties, on the industrial scale.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Tański

Matysiak

Zaborowska

2018

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The purpose of this study was to produce composite thin films with polyvinylpyrrolidone (PVP) matrix with nanoparticles of silicon dioxide (SiO 2 ) as the reinforcing phase (5 and 10%) using spin coating method and to investigate the influence of mass concentration of silica particles and process parameters on the morphology and optical properties of the obtained PVP/SiO 2 nanocomposite coatings. The composite layer topography examination, made using atomic force microscope (AFM), showed the increase of roughness due to the increase of silica mass concentration in thin films. UV-Vis spectroscopy analysis showed that with the increase of SiO 2 nanoparticles in polymer matrix and use of higher rotation speed, the absorbance level decrease. Besides, composite layers with 10% mass concentration relative to polymer concentration were characterized by wider energy band gap, so it can be concluded that obtained nanocomposite thin films can be used as protective layers against UV radiation, with zero absorption in the range of visible light wavelengths.

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Analysis of the Optical Properties of PVP/ZnO Composite Nanofibers

Cited by 7 publications

References 13 publications

Hybrid Mesoporous TiO2/ZnO Electron Transport Layer for Efficient Perovskite Solar Cell

Hybrid Mesoporous TiO2/ZnO Electron Transport Layer for Efficient Perovskite Solar Cell

Phase Diagrams of n-Type Low Bandgap Naphthalenediimide-Bithiophene Copolymer Solutions and Blends

Archives of Metallurgy and Materials

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