Annealing effect on the structural and optical properties of ZnO thin film on InP

Shim, Eun Sub; Kang, Hong Seong; Pang, Seong Sik; Kang, Jeong Seok; Yun, Ilgu; Lee, Sang Yeol

doi:10.1016/s0921-5107(02)00622-0

Cited by 73 publications

(23 citation statements)

References 11 publications

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“…However, many different opinions about origin of visible PL emissions were presented in literature, and various types of defects, responsible for the same colored emission, were reported. In regard to the orange emission, some authors Greene et al 2003;Sim et al 2007;Shim et al 2003) mutually agree in the opinion that orange emission appears in oxygen-rich ZnO samples. The excess oxygen in ZnO samples usually places in interstitial position of crystal lattice The energies of the orange emission for all solvothermally synthesized ZnO powders are ranging from 2.02 to 2.07 eV (see Table 3).…”

Section: Pl Spectroscopy Analysismentioning

confidence: 92%

The modification of structural and optical properties of nano- and submicron ZnO powders by variation of solvothermal syntheses conditions

et al. 2014

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Nano-(30-60 nm) and submicron (100-350 nm) ZnO particles were synthesized using solvothermal method at 200°C from an ethanolic solution of zinc acetate dihydrate, applying different reaction conditions, i.e., pH value of precursor and time of the reaction. The X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance (DR), Raman spectroscopy, and photoluminescence (PL) spectroscopy have been employed for characterization of synthesized ZnO powders. It was shown that the structural, morphological, and optical properties are largely determined by reaction conditions during solvothermal synthesis. The particle crystallinity improves with the decrease of pH value and/or the increase of time of the reaction. The Raman and PL spectra analyses indicate that the oxygen interstitials are dominant intrinsic defects in solvothermally synthesized ZnO powders. It was observed that concentration of defects in wurtzite ZnO crystal lattices slightly changes with the variation of pH value of the precursor and time of the solvothermal reaction. The correlation between structural ordering and defect structure of particles and corresponding growth processes was discussed.

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Section: Pl Spectroscopy Analysismentioning

confidence: 92%

The modification of structural and optical properties of nano- and submicron ZnO powders by variation of solvothermal syntheses conditions

et al. 2014

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“…All measurements were made at room temperature. peaks towards the higher angle would be due to the relaxation of the strain [25]. It could be explained that, annealing at higher temperatures led to improvement of the crystallinity.…”

Section: Methodsmentioning

confidence: 98%

Structural and optical characterization of ZnO and AZO thin films: the influence of post-annealing

Dejam

Elahi

Nazari

et al. 2015

J Mater Sci: Mater Electron

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In the present study, ZnO and Al:ZnO (AZO) thin films were prepared by reactive RF sputtering on quartz substrates at a constant oxygen partial pressure and a typical sputtering power. Films were annealed at different temperatures in argon ambient in the oven to study their various structural and optical properties. It was understood that introducing Al into ZnO structure would affect the ZnO crystalline structure noticeably. It was observed that annealing had great influence on various properties of thin films while ZnO film showed low crystallinity, Al doping into ZnO structure pronounced significant improvement in both crystallinity and particle sizes. It was found that crystal structures, average crystalline sizes, and topology of all thin films were modified enormously by post-annealing. It was shown that films transparency fluctuated by annealing, in which the transparency of AZO thin film annealed at 500°C was much greater than others. Annealing led to decrease optical band gap of all annealed films from 3.31 to 3.26 eV for ZnO and 4 to 3.4 eV for AZO films. Photoluminescence manifested that blue emission in as-deposited film led to two different blue and violet emissions in all AZO and ZnO films. It was identified that the emission intensity of AZO film annealed at 500°C was 12 times more than other ZnO and AZO films.

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“…The blue bands were caused by defects in the ZnO crystals, and the green band was caused by the oxygen transition vacancy, as shown in Figure 5. [22,23]. …”

Section: Photoluminescence Of Zno Npsmentioning

confidence: 99%

Preparation of Tradescantia pallida-mediated zinc oxide nanoparticles and their activity against cervical cancer cell lines

Li¹,

Zhang²,

Mao³

et al. 2017

Trop. J. Pharm Res

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Purpose: To synthesize zinc oxide nanoparticles (ZnO NPs) using Tradescantia pallida. (Commelinaceae) and determine their fluorescent and cytotoxic properties. Methods: ZnO NPs were synthesized according to a simple protocol using T. pallida aqueous leaf extract (TPALE). Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to analyze the morphology of the ZnO NPs. X-ray diffraction (XRD) and Fourier transforminfrared spectroscopy (FTIR) measurements

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Annealing effect on the structural and optical properties of ZnO thin film on InP

Cited by 73 publications

References 11 publications

The modification of structural and optical properties of nano- and submicron ZnO powders by variation of solvothermal syntheses conditions

The modification of structural and optical properties of nano- and submicron ZnO powders by variation of solvothermal syntheses conditions

Structural and optical characterization of ZnO and AZO thin films: the influence of post-annealing

Preparation of Tradescantia pallida-mediated zinc oxide nanoparticles and their activity against cervical cancer cell lines

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