Facile synthesis of flat crystal ZnO thin films by solution growth method: A micro-structural investigation

Thool, Gautam Sheel; Singh, Ajaya Kumar; Singh, Ranber; Gupta, Ashish; Susan, Md. Abu Bin Hasan

doi:10.1016/j.jscs.2014.02.005

Cited by 101 publications

(37 citation statements)

References 60 publications

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“…The value of D increases with increase of annealing temperature. The dislocation density, lattice strain, micro strain, and stacking fault for the present series samples are extracted from d = 1/D 2 (Sathyamoorthy et al 2006;Sharma et al 2011;Touati et al 2014;Bindu and Thomas 2014), e = b/ 4 9 tanh (Thool et al 2014), e = b 9 cosh/4 (Sathyamoorthy et al 2006;Sharma et al 2011) and SF = 2p 2 /45H(3tanh) (Touati et al 2014;Thool et al 2014), respectively, and their values are given in Table 1. From Table 1 we notice that the dislocation density, lattice strain, micro strain, and stacking fault for the annealed samples decrease with the increase of annealing temperature.…”

Section: Resultsmentioning

confidence: 99%

The effect of post annealing treatment on the citrate sol–gel derived nanocrystalline BaFe12O19 powder: structural, morphological, optical and magnetic properties

Brightlin

Balamurugan

2016

Appl Nanosci

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The nanocrystalline BaFe 12 O 19 powders were obtained from citrate sol-gel combustion-derived powder upon annealing at 800-1100°C, and explored their structural, micro-structural, optical and magnetic properties. The thermal decomposition of citrate sol-gel combustion product was verified by means of thermogravimetric and differential thermal analysis. Structural identification of the citrate sol-gel combustion powder and annealed samples were investigated by powder X-ray diffraction. Though the combustion product exhibits cubic spinel phase material, the annealed powder yields good quality nanocrystalline hexagonal BaFe 12

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Section: Resultsmentioning

confidence: 99%

The effect of post annealing treatment on the citrate sol–gel derived nanocrystalline BaFe12O19 powder: structural, morphological, optical and magnetic properties

Brightlin

Balamurugan

2016

Appl Nanosci

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“…where h, k and l are Miller indices denoting the structure's plane [17,20]. The d values for AZO films were determined as 0.260 nm for n-Si(111) and 0.261 nm for glass substrates.…”

Section: Figurementioning

confidence: 99%

“…The d values for AZO films were determined as 0.260 nm for n-Si(111) and 0.261 nm for glass substrates. Using the (002) reflection, the d value for single crystal ZnO is 0.260 nm [20].…”

Section: Figurementioning

confidence: 99%

Role of substrate and annealing temperature on the structure of ZnO and AlxZn1−xO thin films for solar cell applications

Nambala

Nel

Machatine

et al. 2016

Physica B: Condensed Matter

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This paper reports on the deposition of pure and 5 at.% Al doped ZnO (AZO) prepared by sol-gel and applied to the substrates by spin-coating, and the role of annealing temperature on the crystallinity of these layers. It is found that both ZnO and AZO are largely amorphous when coated on glass compared to n-Si(111), as substrates. On both substrates, X-ray diffraction (XRD) shows that the crystallinity improves as annealing temperature is raised from 200 to 600 °C with better crystallinity on Si substrates. The thickness of the films on substrates was determined as 120 nm by Rutherford backscattering spectroscopy (RBS). Specular ultra-violet visible (UV-vis) gives the direct transition optical band gaps (Eg) for AZO as-deposited films are 2.60 and 3.35 eV while that of 600 °C annealed films are 3.00 and 3.60 eV. The Eg calculated from diffuse reflectance spectroscopy (DRS) UV-vis are more diverse in ZnO-and AZO-Si than the ZnO-and AZO-glass samples, although in both sets the Eg tend to converge after annealing 600 °C. The Raman spectra of samples show multiphonon processes of higher order from the AZO and substrates. It is found that residual stresses are related to E2 Raman mode.

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“…Zinc oxide (ZnO), due to its excellent semiconducting and gas sensing properties and photocatalytic and antibacterial activities, is an important material for photovoltaic cells (Rensmo et al., 1997;Bauer et al, 2001;Thool et al., 2014), optoelectronic devices (Tennakone et al, 1999;Zhang et al, 2002;Govender et al, 2002) and sensors (Dong et al, 1997;Gupta, 1990;Henning et al, 1990;Chaturvedi et al, 2012). The recent bias has been shifted towards the investigation of ZnO at nano-scale.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZnO nanoparticles by a hybrid electrochemical-thermal method: influence of calcination temperature

Hassan

Miran

Simol

et al. 2015

Bangladesh J. Sci. Ind. Res.

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ZnO nanoparticles (NPs) with size less than 100 nm were successfully prepared by a hybrid electrochemical-thermal method using metallic zinc and NaHCO 3 without the use of any zinc salt, template or surfactant. The NPs were characterized by Fourier transform infra-red (FT-IR) spectroscopy, UV-visible spectroscopy, photoluminescence spectroscopy (PL), thermo-gravimetric analysis (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy. UV-visible spectral analysis indicated that the particle size increased with increasing calcination temperature. The band gap (3.91-3.83 eV) was higher for synthesized ZnO NPs than their bulk counterparts (3.37 eV). The FT-IR spectra at different calcination temperatures showed the characteristic band for ZnO at 450 cm -1 to be prominent with increasing temperature due to the conversion of precursor into ZnO. The wurtzite hexagonal phase was confirmed by XRD analyses for ZnO NPs calcined at 700 o C. The green photoluminescent emission from ZnO NPs at different calcination temperatures is considered to be originated from the oxygen vacancy or interstitial related defects in ZnO. SEM images clearly showed that the NPs are granular and of almost uniform size when calcined at higher temperatures. EDX spectra further confirmed the elemental composition and purity of ZnO obtained on calcination at 700 o C. The NPs are well dispersed near or above calcination temperature of 700 o C.

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Facile synthesis of flat crystal ZnO thin films by solution growth method: A micro-structural investigation

Cited by 101 publications

References 60 publications

The effect of post annealing treatment on the citrate sol–gel derived nanocrystalline BaFe12O19 powder: structural, morphological, optical and magnetic properties

The effect of post annealing treatment on the citrate sol–gel derived nanocrystalline BaFe12O19 powder: structural, morphological, optical and magnetic properties

Role of substrate and annealing temperature on the structure of ZnO and AlxZn1−xO thin films for solar cell applications

Synthesis of ZnO nanoparticles by a hybrid electrochemical-thermal method: influence of calcination temperature

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