Effect of Annealing Time and Heat Flux on Solvothermal Synthesis of CIGS Nanoparticles

Madhuri, K.V.; Kannan, Padmanathan Karthick; Chaudhari, Sushmita; Dhage, Sanjay R.; Dey, Suhash Ranjan

doi:10.1016/j.matpr.2020.01.245

Cited by 6 publications

(4 citation statements)

References 18 publications

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“…The decrease in nanoparticle size at low calcination temperature was attributed to oxygen vacancies created on the surface. On the other hand, the increase in calcination temperature up to 300 • C led to an increase in the particle size due to the Ostwald Ripening mechanism (i.e., the particles with larger sizes grow at the expense of the smaller ones) [74,75]. The formation of relatively smaller nanoparticles happens during the calcination rather than the loss of water in the particles [76].…”

Section: Xrdmentioning

confidence: 99%

Effect of Calcination Temperature and Time on the Synthesis of Iron Oxide Nanoparticles: Green vs. Chemical Method

et al. 2023

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Nowadays, antioxidants and antibacterial activity play an increasingly vital role in biosystems due to the biochemical and biological reactions that involve free radicals and pathogen growth, which occur in many systems. For this purpose, continuous efforts are being made to minimize these reactions, including the use of nanomaterials as antioxidants and bactericidal agents. Despite such advances, iron oxide nanoparticles still lack knowledge regarding their antioxidant and bactericidal capacities. This includes the investigation of biochemical reactions and their effects on nanoparticle functionality. In green synthesis, active phytochemicals give nanoparticles their maximum functional capacity and should not be destroyed during synthesis. Therefore, research is required to establish a correlation between the synthesis process and the nanoparticle properties. In this sense, the main objective of this work was to evaluate the most influential process stage: calcination. Thus, different calcination temperatures (200, 300, and 500 °C) and times (2, 3, and 5 h) were studied in the synthesis of iron oxide nanoparticles using either Phoenix dactylifera L. (PDL) extract (green method) or sodium hydroxide (chemical method) as the reducing agent. The results show that calcination temperatures and times had a significant influence on the degradation of the active substance (polyphenols) and the final structure of iron oxide nanoparticles. It was found that, at low calcination temperatures and times, the nanoparticles exhibited small sizes, fewer polycrystalline structures, and better antioxidant activities. In conclusion, this work highlights the importance of green synthesis of iron oxide nanoparticles due to their excellent antioxidant and antimicrobial activities.

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Section: Xrdmentioning

confidence: 99%

Effect of Calcination Temperature and Time on the Synthesis of Iron Oxide Nanoparticles: Green vs. Chemical Method

et al. 2023

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“…Various approaches have been explored to improve the quality of metal chalcogenide-based materials, encompassing precise control of chemical composition and crystal structure [25,26], advanced precursor utilization for thin film synthesis [27][28][29], the development of defect passivation layers [30,31], and the introduction of novel dopant materials into the absorber layer [32][33][34][35]. Among these dopants, antimony (Sb) has emerged as a promising candidate, exhibiting beneficial effects on metal chalcogenide properties, and leading to increased photovoltaic performance.…”

Section: Introductionmentioning

confidence: 99%

DFT insights into the effects of substitutionally doped Sb defects in CuIn(S,Se)₂ solar cell absorber

Mazalan,

Abd Aziz,

Saidina Amin

2023

Phys. Scr.

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Metal chalcogenide-based semiconductors are gaining attention for optoelectronic applications like thin-film photovoltaics (PV). Sb dopant incorporation in CuIn(S,Se)2 (CISSe) solar cell has been proven to significantly enhance PV performance, as demonstrated in our previous experimental work. However, the underlying mechanisms behind this improvement remained unclear. In this study, we report on the influence of substitutionally doped Sb defect on the structural, formation energy, band structure, and optical absorption properties in CISSe, employing the hybrid HSE06 functional within the density functional theory framework. We find that the Sb prefers to substitute at In site, resulting in the most stable Sb-doped CISSe structure. Under cation-poor growth conditions, Sb prefers to substitute on In sites, while under anion-poor growth conditions, it shows a preference for substituting on Se sites. Interestingly, only SbIn defects do not form impurity states in the band gap. Additionally, SbIn, SbS, and SbSe show a reduction in the band gap. Our results reveal that Sb-doped CISSe exhibits enhanced optical absorption in the IR to visible regions, leading to increased photocurrent generation and improved photovoltaic device efficiency, consistent with our experimental findings. These findings provide valuable theoretical insights into the influence of Sb-doping in CISSe, aiding the design of effective metal chalcogenide PV.

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“…Therefore, alternative approaches such as solution-based methods have been studied. Solution-based methods include spin coating 11 , spray pyrolysis 12 , 13 , solvothermal 14 , electrodeposition 15 – 17 , printing 18 , successive ionic layer adsorption and reaction (SILAR) 19 and colloidal methods 6 , 20 . Among all inexpensive techniques, spray pyrolysis is one of the best methods to deposit low-cost, highly scalable, and suitable CISe thin films for roll-to-roll production 12 , 13 , 21 .…”

Section: Introductionmentioning

confidence: 99%

Effect of transparent substrate on properties of CuInSe2 thin films prepared by chemical spray pyrolysis

Hashemi

Saki

Dehghani

et al. 2022

Sci Rep

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In this paper, the properties of CuInSe2 (CISe) films deposited on three transparent substrates (FTO, FTO/NiOx, FTO/MoO3) are studied. These substrates might be used for bifacial solar cells, in place of the conventional glass/Mo substrates. CISe layers are deposited by spray pyrolysis followed by a selenization process. For the same deposition conditions, the CISe layers on FTO show the largest grain size (~ 0.50 µm) and crystallinity, while FTO/MoO3 substrates result in the smallest grains (~ 0.15 µm). The optical bandgap of the CISe films ranged from 1.35 eV for FTO substrate to 1.44 eV for FTO/MoO3 substrate. All films show p-type conductivity, with the carrier densities of 1.6 × 1017 cm−3, 5.4 × 1017 cm−3, and 2.4 × 1019 cm−3 for FTO, FTO/NiOx, and FTO/MoO3 substrates, respectively. The CISe films also show different conduction, and valence levels, based on the substrate. In all cases, an ohmic behavior is observed between the CISe and substrate. The results demonstrate that CISe layer crystallinity, carrier concentration, mobility, and energy levels are strongly dependent on the chemical nature of the substrate. Bare FTO shows the most appropriate performance in terms of device requirements.

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Effect of Annealing Time and Heat Flux on Solvothermal Synthesis of CIGS Nanoparticles

Cited by 6 publications

References 18 publications

Effect of Calcination Temperature and Time on the Synthesis of Iron Oxide Nanoparticles: Green vs. Chemical Method

Effect of Calcination Temperature and Time on the Synthesis of Iron Oxide Nanoparticles: Green vs. Chemical Method

DFT insights into the effects of substitutionally doped Sb defects in CuIn(S,Se)₂ solar cell absorber

Effect of transparent substrate on properties of CuInSe2 thin films prepared by chemical spray pyrolysis

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Effect of Annealing Time and Heat Flux on Solvothermal Synthesis of CIGS Nanoparticles

Cited by 6 publications

References 18 publications

Effect of Calcination Temperature and Time on the Synthesis of Iron Oxide Nanoparticles: Green vs. Chemical Method

Effect of Calcination Temperature and Time on the Synthesis of Iron Oxide Nanoparticles: Green vs. Chemical Method

DFT insights into the effects of substitutionally doped Sb defects in CuIn(S,Se)2 solar cell absorber

Effect of transparent substrate on properties of CuInSe2 thin films prepared by chemical spray pyrolysis

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Product

Resources

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DFT insights into the effects of substitutionally doped Sb defects in CuIn(S,Se)₂ solar cell absorber