Effect of Al doping on morphology and optical properties of spray pyrolized MgO thin films

Nion, M. Golam Mortuza; Kabir, M. Humayan; Mona, M.; Haque, Md. Jahidul; Shahariar, Nayem; Hafiz, Munjar; Rahman, Md Sazan

doi:10.1016/j.rinma.2021.100235

Cited by 9 publications

(6 citation statements)

References 22 publications

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“…It may be possible that such an increase is likely a result of an enhanced electric flux density in the Cs 2 AgBiBr 6 thin films caused by the introduction of Al. Consequently, optical conductivity is improved with Al doping, leading to increased electronic transfers through the films. , …”

Section: Resultsmentioning

confidence: 99%

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Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Ullah,

Iftikhar Khan,

Ihtisham-ul-haq

et al. 2024

ACS Omega

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In this study, solar cells based on pure Cs 2 AgBiBr 6 and Al-doped metal were fabricated using the sol−gel spin-coating technique. X-ray diffraction (XRD) analysis confirmed the formation of cubic-structured films for both pure and Al-doped. Notably, the grain size of Al-doped Cs 2 AgBiBr 6 was observed to be larger than that of its pure counterpart. The optical properties of these films were investigated using UV−vis spectroscopy, revealing essential parameters such as the bandgap energy (E g ), refractive index (n), extinction coefficients (k), and dielectric constant. While the pure film exhibited an E g of 1.91 eV, the Al-doped film demonstrated a slightly lower E g of 1.82 eV. Utilization of these films in solar cell fabrication yielded intriguing results. The J−V curve shows that the pure solar cell displayed a short-circuit current density (J sc ) of 5.01 mA/cm 2 , a fill factor (FF) of 0.67, an open-circuit voltage (V oc ) of 0.89 V, and an efficiency of 3.02%. Al doping led to improvements, with an increase in V oc to 0.91 V, FF to 0.71, and J sc to 5.29 mA/cm 2 . Consequently, the overall efficiency surged to 3.40%, marking a substantial 12.5% enhancement compared with the pure solar cell. These findings underscore the efficacy of Al doping in enhancing the performance of Cs 2 AgBiBr 6 -based solar cells.

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Section: Resultsmentioning

confidence: 99%

“…Consequently, optical conductivity is improved with Al doping, leading to increased electronic transfers through the films. 61,78 3.3. J−V Curve.…”

Section: Optical Analysismentioning

confidence: 99%

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Ullah,

Iftikhar Khan,

Ihtisham-ul-haq

et al. 2024

ACS Omega

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“…As a results, the transmittance of MgO thin lms falls as Zn doping concentration increases. Zn atoms may have been incorporated into the MgO crystals to cause this decrement; the observed drop in the optical transmission of strongly doped materials may be due to the photons' free carrier absorption [19,20]. Additionally, it can be observed that the transmittance decreased with a sharp fundamental transition edge at a wavelength of about 302 nm.…”

Section: Optical Propertiesmentioning

confidence: 99%

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Abed,

Djaaboube,

Waszkowska

et al. 2023

Preprint

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In this study transparent dielectric magnesium oxide doped zinc thin films (MgO: Zn) were deposited on glass substrate using dip coating technique with a varied concentration of zinc (0, 3, 5 and 7 at %) , employing magnesium acetate and zinc acetate as starting materials. The obtained films were annealed at 500 °C for 6 hours. The effect of Zn doping concentration on the morphological, optical and nonlinear optical properties has been studied. The optical transmittance of the produced thin films indicated that these films are transparent in the visible region with a transparency of 90 %. The optical band gap and Urbuch energy of the films were found. The value of optical band gap varies from 3.94 to 4.04 eV. The surface morphology shows that the films are uniform, homogeneous and dense. We using the rotational maker fringe with Nd:YAG laser at 1064 nm for the third harmonic generation measurements. Finally, the values of the third order nonlinear susceptibilities were calculated.

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“…The increase in the energy values of Urbach tails is attributed to the increase in the number of local energy levels in the optical energy gap, and thus the energy of Urbach tails increases [8].…”

Section: Urbach Energymentioning

confidence: 99%

“…In general, dopants are useful for significantly modifying the properties of host materials. Several doping have been used to modify the properties of MgO thin films, such as (Zn, Ag, Cr, Al, Fe) [4][5][6][7][8]. In the current study, we chose zinc sulfide (ZnS) as the doping component because (ZnS) is a low-toxicity, low-cost, and readily available substance [9].…”

Section: Introductionmentioning

confidence: 99%

Surface Topography and Optical Properties for (MgOx-1ZnSx) Thin Films Prepared by Chemical Spray Pyrolysis

2022

djps

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Pure and doped magnesium oxide (MgO) thin films were prepared with different volumetric ratios (0, 2, 4, 6, and 8%) of zinc sulfide (ZnS) on glass substrates at (350 °C) by chemical spray pyrolysis technique. The surface topography, absorption spectrum, absorption coefficient and Urbach energy of the prepared films were studied. The atomic force microscopy (AFM) results revealed that the surface topography of the prepared films changes as the percentage of doping with zinc sulfide (ZnS) increases. The absorbance spectrometry of the prepared films was measured by UV-vis. The Urbach energy of the prepared thin films increased by increasing the doping ratios with (ZnS).

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Effect of Al doping on morphology and optical properties of spray pyrolized MgO thin films

Cited by 9 publications

References 22 publications

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Surface Topography and Optical Properties for (MgOx-1ZnSx) Thin Films Prepared by Chemical Spray Pyrolysis

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Effect of Al doping on morphology and optical properties of spray pyrolized MgO thin films

Cited by 9 publications

References 22 publications

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs2AgBiBr6 Solar Cell via Al Doping

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs2AgBiBr6 Solar Cell via Al Doping

Diagnostic of linear and nonlinear optical effects of Zn doping MgO thin films deposited by dip coating technique

Surface Topography and Optical Properties for (MgOx-1ZnSx) Thin Films Prepared by Chemical Spray Pyrolysis

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Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs₂AgBiBr₆ Solar Cell via Al Doping