Theoretical study of structural, electronic, optical and elastic properties of Al Ga1−P

Zafar, Muhammad Sohail; Masood, M. Kashif; Rizwan, Muhammad; Zia, Anam; Ahmad, Shabbir; Akram, Arfan; Cao, Chuanbao; Shakil, M.

doi:10.1016/j.ijleo.2018.12.165

Cited by 24 publications

(17 citation statements)

References 28 publications

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“…According to Figure 2, the graphs of the extinction coefficients have similar features (critical points) with the imaginary part. The absorption coefficient (α) determines how far in the material the propagation of light can drill through the material before it is absorbed and depends on both the incoming light and the intrinsic properties of the material [25,26]. According to Figure 3, with a decrease in the content of bromine and an increase in the concentration of iodine, the absorption capacity of the CsSnBr3-xIx system increases, and therefore CsSnI3 is characterized by maximum absorption in the IR region and will cover the maximum range of the solar spectrum, therefore it is suitable for devices such as solar cells, LEDs and lasers.…”

Section: Resultsmentioning

confidence: 99%

Investigation Optical Properties of the Orthorhombic System CsSnBr3-xIx: Application for Solar Cells and Optoelectronic Devices

Nematov

2021

J. Hum. Earth Future

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In this work, to study the optical properties of orthorhombic perovskites of the CsSnBr3-xIx system, spin-orbital and spin-polarized quantum chemical calculations were carried out in the framework of the density functional theory. The effects of electron exchange correlation were taken into account by the modified Becke-Jones exchange-correlation potential (mBJ). It has been established that with an increase in the iodine concentration, the absorption capacity and photoconductivity of these semiconductors increase. Other optical properties were also calculated, such as the real and imaginary parts of the dielectric function, refractive indices, energy loss spectrum, extinction coefficients, and reflection coefficients. The high absorption of these compounds in the infrared, visible and ultraviolet energy ranges allows the use of these perovskites in optical and optoelectronic devices operating in all spectral ranges by controlling and changing their content. Doi: 10.28991/HEF-2021-02-04-08 Full Text: PDF

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Section: Resultsmentioning

confidence: 99%

Investigation Optical Properties of the Orthorhombic System CsSnBr3-xIx: Application for Solar Cells and Optoelectronic Devices

Nematov

2021

J. Hum. Earth Future

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“…The weighted average refractive index of the multilayer structure was calculated to be 3.55. 27 , 28 …”

Section: Results and Discussionmentioning

confidence: 99%

“…The nominal thickness of microdisks was 186 nm, except for disks made from Wafer A, which had a thickness of 180 nm. The weighted average refractive index of the multilayer structure was calculated to be 3.55. , …”

Section: Results and Discussionmentioning

confidence: 99%

Red-Shifted Excitation and Two-Photon Pumping of Biointegrated GaInP/AlGaInP Quantum Well Microlasers

et al. 2022

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Biointegrated intracellular microlasers have emerged as an attractive and versatile tool in biophotonics. Different inorganic semiconductor materials have been used for the fabrication of such biocompatible microlasers, but often operate at visible wavelengths ill-suited for imaging through tissue. Here, we report on whispering gallery mode microdisk lasers made from a range of GaInP/AlGaInP multi-quantum well structures with compositions tailored to red-shifted excitation and emission. The selected semiconductor alloys show minimal toxicity and allow fabrication of lasers with stable single-mode emission in the NIR (675 -720 nm) and sub-pJ thresholds. The microlasers operate in the first therapeutic window under direct excitation by a conventional diode laser and can also be pumped in the second therapeutic window using two-photon excitation at pulse energies compatible with standard multiphoton microscopy. Stable performance is observed under cell culturing conditions for five days without any device encapsulation. With their biooptimized spectral characteristics, low lasing threshold and compatibility with two-photon pumping, AlGaInP-based microlasers are ideally suited for novel cell tagging and in vivo sensing applications.

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“…The extinction coefficient graphs have similar features (critical points) to imaginary part e . 1 Absorption coefficient (α) depends upon both the incoming light and the intrinsic property of the material [40,41].…”

Section: Optical Propertiesmentioning

confidence: 99%

Effect of mixed halide contents on structural, electronic, optical and elastic properties of CsSnI_3−xBr_x for solar cell applications: first-principles study

Shakil

Akram

Zeba

et al. 2020

Mater. Res. Express

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In this study, structural, electronic, optical and elastic properties of CsSnI 3−x Br x perovskites are investigated by full potential linearized augmented plane wave method (FP-LAPW) with exchange correlation functionals GGA-PBE and GGA-mBJ as implemented in Wien2k. The calculated structural parameters for all compositions are in good correlation with literature. The band structures and density of states (DOS) are calculated by GGA which indicated that all these alloys have direct band gap. Furthermore, the band gaps are also calculated by employing modified Beck-Johnson's (mBJ) exchange potential. The obtained band gaps with this method are found to be improved as compared to GGA. The calculated optical parameters show that these materials have the competency for light absorption and to retain it. These characteristics make them promising materials for solar cell applications. The elastic constants have also been calculated which revealed that all these compounds have ductile nature. The mixed halide contents are pioneered in this study and therefore, no data is in hand for estimation.

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Theoretical study of structural, electronic, optical and elastic properties of Al Ga1−P

Cited by 24 publications

References 28 publications

Investigation Optical Properties of the Orthorhombic System CsSnBr3-xIx: Application for Solar Cells and Optoelectronic Devices

Investigation Optical Properties of the Orthorhombic System CsSnBr3-xIx: Application for Solar Cells and Optoelectronic Devices

Red-Shifted Excitation and Two-Photon Pumping of Biointegrated GaInP/AlGaInP Quantum Well Microlasers

Effect of mixed halide contents on structural, electronic, optical and elastic properties of CsSnI_3−xBr_x for solar cell applications: first-principles study

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Theoretical study of structural, electronic, optical and elastic properties of Al Ga1−P

Cited by 24 publications

References 28 publications

Investigation Optical Properties of the Orthorhombic System CsSnBr3-xIx: Application for Solar Cells and Optoelectronic Devices

Investigation Optical Properties of the Orthorhombic System CsSnBr3-xIx: Application for Solar Cells and Optoelectronic Devices

Red-Shifted Excitation and Two-Photon Pumping of Biointegrated GaInP/AlGaInP Quantum Well Microlasers

Effect of mixed halide contents on structural, electronic, optical and elastic properties of CsSnI3−xBrx for solar cell applications: first-principles study

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Effect of mixed halide contents on structural, electronic, optical and elastic properties of CsSnI_3−xBr_x for solar cell applications: first-principles study