Study of dye sensitized solar cells photoelectrodes consisting of nanostructures

Tański, Tomasz; Jarka, P.; Szindler, M.; Drygała, A.; Matysiak, Wiktor; Libera, Marcin

doi:10.1016/j.apsusc.2019.04.274

Cited by 23 publications

(12 citation statements)

References 52 publications

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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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Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…However, these scattering layer materials have insufficient light adsorption due to their relatively small specific surfaces. The solution to this problem is therefore the production and development of multifunctional materials combining the desired properties of light diffusion with high dye adsorption such as hybrid layers that connect one- (1D), two- (2D), and three-dimensional (3D) nanostructures [ 27 , 28 ]. Combining such types of nanostructured phases have been intensively studied to increase surface area for dye adsorption (widening the optical length of the incident light) as well as enhance the diffusion of the electrolyte through the electrode pores and create direct pathways for fast collection of photogenerated electrons [ 29 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of TiO2 Nanostructures on Dye-Sensitized Solar Cells Performance

et al. 2021

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The effect of TiO2 nanostructures such as nanoparticles, nanowires, nanotubes on photoanode properties, and dye-sensitized solar cells photovoltaic parameters were studied. The series of dye-sensitized solar cells based on two dyes, that is, commercially N719 and synthesized 3,7′-bis(2-cyano-1-acrylic acid)-10-ethyl-phenothiazine were tested. Additionally, the devices containing a mixture of this sensitizer and chenodeoxycholic acid as co-adsorbent were fabricated. The amount of adsorbed dye molecules to TiO2 was evaluated. The prepared photoanodes with different TiO2 nanostructures were investigated using UV-Vis spectroscopy, optical, atomic force, and scanning electron microscopes. Photovoltaic response of constructed devices was examined based on current-voltage characteristics and electrochemical impedance spectroscopy measurements. It was found that the highest UV-Vis absorption exhibited the photoanode with nanotubes addition. This indicates the highest number of sensitizer molecules anchored to the titanium dioxide photoanode, which was subsequently confirmed by dye-loading tests. The highest power conversion efficiency was (6.97%) for solar cell containing nanotubes and a mixture of the dyes with a co-adsorbent.

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“…In recent decades, quasi-one-dimensional (1D) nanostructures, which include nanowires, nanotubes and nanofibers have aroused great interest of scientists due to their diverse application possibilities fibre [1][2][3][4][5][6][7][8][9]. This is due to the fact that, compared to the micrometre equivalents, many nanostructured materials are characterised by unique mechanical, optical, electrical and magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Study of optical and dielectric constants of hybrid SnO2 electrospun nanostructures

2020

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The aim of this paper was to prepare SnO 2 nanowires using electrospinning and calcination processes from a poly(vinylpyrrolidone), dimethylformamide, ethanol and tin(IV) chloride pentahydrate solution. The composite PVP/SnCl 4 nanofibers obtained via electrospinning method were dried and calcined in a vacuum to remove the polymer matrix at a temperature of 500 °C for 10 h. Three types of nanowires with a polymer to precursor ratios of 2:1, 1:1, 1:3 were produced. The morphology and chemical composition of as-spun PVP/SnCl 4 nanofibers and SnO 2 nanowires obtained after heat treatment were carried out using a scanning electron microscope (SEM) with an energy-dispersive spectrometer (EDX). The Fourier-transform infrared spectroscopy (FTIR) spectra of the prepared nanomaterials were also investigated. To determine the topography of PVP/SnCl 4 nanofibrous mats, an atomic force microscope (AFM) was used. A 100-fold measurement of the nanowire size showed that, depending on the amount of precursor in the spinning solution, nanowires with diameters ranging from 20 to 260 nm were obtained. The optical property analysis was performed on the basis of absorbance spectra recorded over UV-Vis spectral range. The complex refractive index n and complex dielectric permeability ε of obtained tin oxide nanowires were determined as a function of the radiation energy. Depending on the precursor content in spinning solution, the one-dimensional SnO 2 nanostructures were characterised by a refractive index in the range of 1.51-1.56, whereas the dielectric constant ranged from 2.26 to 2.30. The optical properties and the structure of one-dimensional SnO 2 nanomaterials allow to use this type of materials in the construction of novel type photovoltaic cells and electronic devices.

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Study of dye sensitized solar cells photoelectrodes consisting of nanostructures

Cited by 23 publications

References 52 publications

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

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

Impact of TiO2 Nanostructures on Dye-Sensitized Solar Cells Performance

Study of optical and dielectric constants of hybrid SnO2 electrospun nanostructures

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