Solution-based hafnium oxide thin films as potential antireflection coating for silicon solar cells

Kanmaz, İmran; Mandong, Al Montazer; Üzüm, Abdullah

doi:10.1007/s10854-020-04640-9

Cited by 13 publications

(14 citation statements)

References 26 publications

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“…Generally, the optical behavior of the present films in the visible range does not contradict the results published in the literature on optical properties of HfO 2 nanofilms prepared via different techniques on dissimilar substrates. − However, in the near-infrared region, the present films are apparently more reflective and less transparent than the reported films. Such a specific optical behavior, also revealed in the most recent work on spin-coated HfO 2 films, is considered advantageous for multifunctional superself-cleaning heat-protective dielectric HfO 2 coating with properties on demand for the solar energy industry, which will be discussed in section .…”

Section: Resultsmentioning

confidence: 92%

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO₂ Multifunctional Coatings for Potential Solar Panel Applications

Sepúlveda

Kamnev

Pytlíček

et al. 2021

ACS Appl. Nano Mater.

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The fabrication of superhydrophobic-oleophobic HfO 2 coatings presents a challenge. Here, we synthesize via the self-organized anodizing of aluminum-on-hafnium layers sputterdeposited onto SiO 2 and glass substrate arrays of highly aligned HfO 2 nanostructures of dissimilar shapes, sizes, spacings, and population densities termed as nanorods, nanopillars, nanohoodoos, and nanopillars-in-domains, which were then modified with various self-assembled monolayers. The treatment in fluoroalkyl-trimethoxysilane (FAS-17) appeared to be the most effective in making the hafnium-oxide nanoarrays superhydrophobic, with water contact angles of 153°(nanopillars), 155°( nanorods), 160°(nanohoodoos), and 174°(nanopillars-indomains), the latter revealing the smallest roll-off angle of <1°. The FAS-17-modified HfO 2 nanorods and pillars-in-domains demonstrated the best oleophobic properties with a contact angle for ethylene glycol of 140°and for rapeseed oil of 121°. In addition, the HfO 2 nanorod films were highly transparent and antireflective in the visible spectral range and substantially less transparent and increasingly reflective in the near infrared. An outstanding combination of robust superhydrophobic-oleophobic properties with the specific optical behavior of the HfO 2 nanoarrays makes them attractive for application as self-cleaning visibletransparent heat-repelling dielectric coatings for solar cell coverglass and concentrator photovoltaics.

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Section: Resultsmentioning

confidence: 92%

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO₂ Multifunctional Coatings for Potential Solar Panel Applications

Sepúlveda

Kamnev

Pytlíček

et al. 2021

ACS Appl. Nano Mater.

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“…Rouard's method simplifies the calculation of the reflectance spectra of any 'N' number of dielectric stacks deposited on a substrate. Reflectance spectra of the solar cell with DLARC can be solved by following equations [8,19,24]:…”

Section: Dlarc Equations Using Fresnel's Equation and Rouard's Methodsmentioning

confidence: 99%

“…The refractive index of antireflection coating in between air and silicon are denoted with subsequent numbers from top to bottom layer. When incoming light hits an interface and propagates from one medium to another medium with different refractive index, while a part of the light is transmitted or absorbed into the latter medium, some portion of the light is reflected back, as explained in literature [8,[22][23][24]. During this transaction, the diffraction of transmitted light bends in an angle and changes the angle of propagation.…”

Section: Simulation Model and Fresnel's Equationsmentioning

confidence: 99%

“…Other than that, alternative ARCs including TiO2, SiO2, Al2O3, ZrO2, HfO2 etc. has been studied and applied to the solar cell structures by a variety of deposition techniques both as a single layer or as in stacks [3,[7][8][9][10][11]. On the other hand, solar cell simulation softwares support researchers to design, develop and optimize solar cells.…”

Section: Introductionmentioning

confidence: 99%

“…Islam et. al used Sentaurus TCAD in simulation of ITO/Si3N4/ZnO:Al as antireflection coating and studied the effect of ARC in JSC, VOC and efficiency of silicon solar cells [8]. These studies of antireflection coatings using simulation softwares have shown a significant increase in JSC, and η of antireflection coated silicon solar cell when compared to an uncoated solar cell.…”

Section: Introductionmentioning

confidence: 99%

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Fresnel calculations of double/multi-layer antireflection coatings on silicon substrates

Mandong¹,

Üzüm²

2021

Res. Eng. Struct. Mater.

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Reflectance spectra calculations of double and multi-layer antireflection coating (ARC) structures based on Fresnel equations were studied in this work. A detailed explanation of Fresnel equations was presented with different polarization of incoming light for multi-layer antireflection coatings for solar cell applications. TiO2/SiNx, MgF2/ZnS thin film stacks for double layer ARC and SiO2/Al2O3/TiO2, MgF2/SiO2/TiO2 thin film stacks for multi-layer ARC were studied. Transfer matrix method and PC1D simulation software were used additionally to simulate crystalline silicon solar cells with considered double and multi-layer ARC films on their front surface with calculated thicknesses. Average reflectance (400-1100 nm) of silicon surface by Fresnel equations with triple layer ARC was around 2.72%. Solar cell performances with each ARC structure were compared to evaluate the achieved output of reflectance of investigated thin films. Simulated short circuit current density of solar cells with tri-layer ARC was 39.71 mA/cm 2 , was significantly higher than that of the ARC-free solar cells resulting in an efficiency of 19.1%.

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Improving Solar Cell Efficiency through Controlled Annealing Effects of TiO₂ Thin Films

Kanmaz,

Tomakin

2024

Physica Status Solidi (a)

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In the scope of this research, the impact of thermal annealing on the electrical and optical characteristics of TiO2 thin films is investigated through empirical analysis. Varied annealing temperatures are applied during the production of TiO2 thin films, and their reflection, transmission, absorption, and crystalline structure attributes are meticulously gauged. Through systematic analysis, the optimal annealing temperature is determined to be 500 °C. Remarkably, TiO2 thin films fabricated under this specific temperature exhibit notably reduced reflection values. Moreover, comprehensive scrutiny extends to encompass both electrical and structural attributes, such as carrier density, resistivity, and crystal size, in addition to optical attributes. In the outcome, it is revealed that TiO2 thin films subjected to annealing at 500 °C exhibit the highest carrier density and the lowest resistivity. X‐ray diffraction analyses unveil the anatase phase of TiO2 thin films developed at this temperature. Notably, ascending annealing temperatures correlate with amplified crystal sizes and increased surface roughness. Furthermore, the TiO2 thin films are subsequently integrated into crystalline silicon solar cells via employment of the SCAPS (a Solar Cell Capacitance Simulator) software, culminating in a noteworthy 8% enhancement in solar cell efficiency.

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Solution-based hafnium oxide thin films as potential antireflection coating for silicon solar cells

Cited by 13 publications

References 26 publications

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO₂ Multifunctional Coatings for Potential Solar Panel Applications

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO₂ Multifunctional Coatings for Potential Solar Panel Applications

Fresnel calculations of double/multi-layer antireflection coatings on silicon substrates

Improving Solar Cell Efficiency through Controlled Annealing Effects of TiO₂ Thin Films

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Solution-based hafnium oxide thin films as potential antireflection coating for silicon solar cells

Cited by 13 publications

References 26 publications

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO2 Multifunctional Coatings for Potential Solar Panel Applications

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO2 Multifunctional Coatings for Potential Solar Panel Applications

Fresnel calculations of double/multi-layer antireflection coatings on silicon substrates

Improving Solar Cell Efficiency through Controlled Annealing Effects of TiO2 Thin Films

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Product

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About

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO₂ Multifunctional Coatings for Potential Solar Panel Applications

Superhydrophobic–Oleophobic Visible–Transparent Antireflective Nanostructured Anodic HfO₂ Multifunctional Coatings for Potential Solar Panel Applications

Improving Solar Cell Efficiency through Controlled Annealing Effects of TiO₂ Thin Films