Structural and optical characteristic of chalcone doped ZnO nanoparticles

Modwi, A.; Ali, Majid Khan Majahar; Taha, Kamal K.; Ibrahem, Mohammed Aziz; El-Khair, Hatim Mohamed; Eisa, M. H.; Elamin, Mohamed R.; Aldaghri, O.; Alhathlool, R.; Ibnaouf, K.H.

doi:10.1007/s10854-017-8207-5

Cited by 14 publications

(8 citation statements)

References 28 publications

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“…where, α is the absorption coefficient, h is Planck's constant, v is the photon frequency, A is a constant, and E g is the optical band gap. Figure 4 illustrates (αhv) 2 To further understand the electronic structure of ZnO, both the density of states (DOS) and partial density of states (PDOS) are calculated, as shown in Figure 6. For aluminum doped ZnO (Figure 6A), the first peak at around 3.29 eV in the valence band originates from the contribution of the Zn-4s, Al-3s, and Al-3p states.…”

Section: Resultsmentioning

confidence: 99%

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Aluminum–nitrogen co‐doping improves the blue emission of ZnO films: A combined theoretical–experimental study

Ding

Yan

Jin

et al. 2022

Int J of Quantum Chemistry

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The investigation on visible emission of ZnO is necessary due its potential application in electrochemical communication, biosensor, and white light diodes, and so forth. Previous report indicates that the visible light of ZnO is related to the defect type and concentration. It can be regulated by various methods. However, quenching of light emission occurs if too many defects are introduced. In this work, combined with theoretical calculation about energy band structure, aluminum–nitrogen co‐doped ZnO is conducive to form p‐type semiconductor, but aluminum doped ZnO films tend to form a deep n‐type semiconductors. Therefore, in the experiment, aluminum–nitrogen co‐doped ZnO films are prepared using radio frequency magnetron sputtering. The substitution of oxygen using nitrogen impurity is expected to introduce more oxygen vacancies and interstitial zinc defects related to visible light emission. At the same time, annealing in vacuum is also a highly non‐equilibrium processes with low oxygen and high zinc contents. Results indicate that combined with aluminum–nitrogen co‐doping and an appropriate annealing temperature, the blue and blue‐green emission of ZnO films can be greatly improved.

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Section: Resultsmentioning

confidence: 99%

“…ZnO materials have attracted increasing interest due to their specific properties, such as band gap of ~3.37 eV and exciton binding energy of ~60 meV [1, 2]. Among various excellent properties, its optical and electrochemical properties are widely investigated.…”

Section: Introductionmentioning

confidence: 99%

Aluminum–nitrogen co‐doping improves the blue emission of ZnO films: A combined theoretical–experimental study

Ding

Yan

Jin

et al. 2022

Int J of Quantum Chemistry

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show abstract

“…Finally, compound 4 had the band at 790,1510, and 1604 cm -1 , corresponding to the presence of C-Br group, C=C group of benzene, and C=O of the ketone. The band at 2866, 2958, and 3485 cm -1 , respectively, attributed to the presence of -CH 3 (asymmetric), -CH 3 (symmetrical), and C=O [15][16].…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis and Cytotoxic Test of Halogen-Substituted Chalcone Against MCF-7 Breast Cancer Cells

Brahmana

Kaban²,

Haro³

et al. 2022

Indones. J. Chem.

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A series of chalcones was synthesized to be (E)-1-(4-chlorophenyl)-3-p-tolyprop-2-en-1-on (1), (E)-1-(4-chlorophenyl)-3-(4-tolyprophenyl) prop-2-en-1-on (2), (E)-1-(3-bromophenyl)-3-p-tolylprop-2-en-1-on (3), and (E)-1-(3-bromophenyl)-3-(4-isopropyl phenyl) prop-2-en-1-on (4) using irradiate microwave method with reaction time from 3, 6, and 8 min at 800 °C and 700 W. The compounds were characterized using TLC, UV-Vis, FTIR, 1H-NMR, and evaluated MCF-7 cancer cell cytotoxic test with Presto BlueTM. All compounds produced were in the form of yellow crystals. The results showed that compounds 2, 3, and 4 were potentially a Como prevention agent and inhibit cell proliferation with IC50 values of 37.24, 422.22, and 22.41 ppm, respectively. While compound 1 had IC50 1,484.75 and no cytotoxic effect. Further tests should be carried out for compounds 2, 3, and 4 against normal cells to measure the compound's safety for normal cells.

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“…The plot of (αE) 2 versus wavelength for the investigated samples give of energy band gap of 3.29 eV. [21][22] This fabricated film showed a lessening bandgap that can be attributed to the single and heightened crystallinity. The Photoluminescence (PL) Figure 4 depicts the PL spectrum of ZnO/nanorods on P-Si.…”

Section: (8)mentioning

confidence: 99%

Single Crystalline Zinc Oxide Nanorods Grown by R-F Sputtering Technique Onto P-Si Substrate for Sensing Applications

Aljameel

2022

Mat. Sci. Res. India

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A high-quality, single-crystal ZnO nanorod thin film was successfully deposited onto p-type monocrystalline silicon (P-Si) substrates using an RF sputtering technique. An XRD analysis of ZnO nanorods was carried out to investigate crystallinity and aspect ratio of the deposited thin film. Adjusting deposition conditions makes it possible to grow single-crystalline ZnO nanorods with preferred orientations (002) on the substrate. More than the substrate type, crystal size is determined by single-crystal growth conditions. These sample had the exact. With the exception of a small variance at Raman shifts 414 cm-1, which correspond to E2. Raman spectra measurements with a slight variation at Raman shifts 414 cm-1, corresponding to E2 (high). In response to the compressive stress, the peak shifts upwards (blue dress). Data from FE-SEM shows vertical growth of hexagonal prism. Finally, the hall effect measurement and UV-vis spectroscopy were carried out the electrical and optical properties of the sample respectively.

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Structural and optical characteristic of chalcone doped ZnO nanoparticles

Cited by 14 publications

References 28 publications

Aluminum–nitrogen co‐doping improves the blue emission of ZnO films: A combined theoretical–experimental study

Aluminum–nitrogen co‐doping improves the blue emission of ZnO films: A combined theoretical–experimental study

Synthesis and Cytotoxic Test of Halogen-Substituted Chalcone Against MCF-7 Breast Cancer Cells

Single Crystalline Zinc Oxide Nanorods Grown by R-F Sputtering Technique Onto P-Si Substrate for Sensing Applications

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