Solution Processed Zn1−x−ySmxCuyO Nanorod Arrays for Dye Sensitized Solar Cells

Saleem, Muhammad; Algahtani, Ali; Rehman, Saif ur; Javed, Muhammad Sufyan; Irshad, Kashif; Ali, Hafız Muhammad; Malik, Muhammad Zeeshan; Ali, Amjad; Tirth, Vineet; Islam, Saiful

doi:10.3390/nano11071710

Cited by 17 publications

(3 citation statements)

References 53 publications

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“…With the continuous expansion of the application field of ceramic materials, higher requirements have been put forward for the shape, size, and forming accuracy of ceramic components. − Gelcasting technology has been confirmed to be the most effective method to achieve near net shaping of ceramic products with larger sizes and more complex shapes because it can improve the deformation shrinkage and post-processing difficulties of traditional ceramic green body molding methods. − …”

Section: Introductionmentioning

confidence: 99%

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Huang

2022

ACS Omega

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This work aims to provide useful insights into the thermal debinding kinetics of gelcast ceramic parts, especially for debinding kinetics prediction involving heat preservation. Debinding experiments were conducted in a differential thermogravimetric analyzer at five heating rates (5, 8, 10, 15, and 20 °C/min) in the temperature range of 35–900 °C under an air atmosphere. The conversion (α) and pyrolysis rate (dα/d T ) data were simulated using a modified independent parallel reaction (IPR) model and a multiple normally distributed activation energy model (M-DAEM). Their validity was assessed and compared by checking the agreement between the experimental results and the prediction capability. The results showed that both the modified IPR model and M-DAEM had high predictability for thermal debinding kinetics under linear heating conditions. The fitting quality parameters (Fit) were less than 1.406 and 1.01%, respectively. The activation energies ( E i , i = 1, 2, 3, 4, and 5) calculated by the M-DAEM ranged from 153.312 to 217.171 kJ/mol. The relationships between E i of pseudo components 1 to 5 calculated by the modified IPR model were a function of the conversion rate. The E i values were E 1 (α) = 116.750 + 11.153α – 26.772α 2 + 4.362α 3 kJ/mol, E 2 (α) = 139.595 – 66.162α + 75.702α 2 – 38.041α 3 kJ/mol, E 3 (α) = 190.854 + 135.755α – 214.801α 2 + 116.093α 3 kJ/mol, E 4 (α) = 64.068 + 280.086α – 380.270α 2 + 264.724α 3 kJ/mol, and E 5 (α) = 188.257 – 77.086α + 74.129α 2 – 48.669α 3 kJ/mol, respectively. However, it is noteworthy that the α and dα/d T curves predicted by the modified IPR model with a deviation of less than 8% were better than those predicted by the M-DAEM for the linear thermal debinding process with the holding stage. Accordingly, it is believed that the proposed modified IPR model is suitable for describing the thermal debinding kinetics involving the heat preservation of gelcast green parts.

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Section: Introductionmentioning

confidence: 99%

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Huang

2022

ACS Omega

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“…However, ILs are well designed, which allows one to design functionalized IL mixtures by combining suitable anions and cations [7][8][9][10]. IL mixtures have been widely used in electrochemistry, carbon dioxide capture, biomass treatment, catalysis, extraction, and other fields [11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Thermal Decomposition Properties of Binary Imidazole Ionic Liquid Mixtures

et al. 2022

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Ionic liquids (ILs) have a wide range of applications, owing to their negligible vapor pressure, high electrical conductivity, and low melting point. However, the thermal hazards of ILs and their mixtures are also non-negligible. In this study, the thermal hazards of various binary imidazolium ionic liquids (BIIL) mixtures were investigated. The effects of parent salt components and molar ratios on the thermal decomposition temperature (Td) and flashpoint temperature (Tf) are investigated. It is found that both Td and Tf increase as the proportion of highly thermally stable components in BIIL mixtures increases. Furthermore, the decomposition process of BIIL mixtures can be divided into two stages. For most molar ratios, the Tf of the BIIL mixtures is in the first stage of thermal decomposition. When the proportion of highly thermally stable components is relatively high, Tf is in the second stage of thermal decomposition. The flammability is attributed to the produced combustible gases during the thermal decomposition process. This work would be reasonably expected to provide some guidance for the safety design and application of IL mixtures for engineering.

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“…DSSCs consist of several important components, a conductive substrate, a nanostructure semiconductor (electrode), a counter electrode, an electrolyte, and a visible-light absorber dye [8]. Previous studies have shown that ZnO nanorods with oriented and orderly epitaxial growth structures are very important for the development of new photovoltaic efficiencies of 3.15-4.46% [1], [5], [9], [10]. Various methods have been successfully used for the synthesis of ZnO nanorods, such as low-temperature solution [11], chemical bath deposition [12], precipitation [13], pyrolysis [14], a sol-gel dip-coating technique [5], and sputtering [15].…”

mentioning

confidence: 99%

Performance of Dye Sensitized Solar Cells (DSSCs) with ZnO Nanorod Electrode in Different Seed Solution

Pujiarti¹,

Pujiarti²,

Diantoro³

et al. 2021

JPSE

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Studies of comparing the performance of photoelectrode for dye-sensitized solar cells (DSSCs) continue to be carried out and developed. The ZnO nanorods as an electrode for DSSCs have been shown to have high electron collection due to the capability of electron photoexcitation and increased electron transport. Various methods of making ZnO nanorods have been studied and developed. However, the method requires controlled conditions under high temperature and pressure, thus limiting the commercialization of ZnO nanorods. Therefore, the seed solution-based hydrothermal method was chosen in the ZnO nanorod deposition process because it is an effective method, low-cost and easier fabrication process. The method of growing ZnO nanorod was carried out with three times of growing for 6 hours. ZnO nanorod was synthesized using different seed solutions, namely sample 1 and sample 2 by using methoxy and isopropanol, respectively. In this work, the SEM image shows the growth of ZnO nanorods vertically aligned on the FTO substrate and resulted in a smaller diameter for the isopropanol seed solution. The smaller diameter of the ZnO nanorod provides a larger surface area then increasing the total amount of dye attached to the ZnO nanorod and improve the photovoltaic performance.

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Solution Processed Zn1−x−ySmxCuyO Nanorod Arrays for Dye Sensitized Solar Cells

Cited by 17 publications

References 53 publications

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Experimental Study of the Thermal Decomposition Properties of Binary Imidazole Ionic Liquid Mixtures

Performance of Dye Sensitized Solar Cells (DSSCs) with ZnO Nanorod Electrode in Different Seed Solution

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