Effects of withdrawal speed on the microstructural and optical properties of sol–gel grown ZnO:Al thin films

Aydemir, Sinem

doi:10.1016/j.vacuum.2015.05.041

Cited by 15 publications

(6 citation statements)

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“…The formed pores may be attributed to the grain agglomeration which is related to the higher thickness. 24 Additionally, the root mean square (RMS) roughness of lms, shown in Fig. 2f, is affected by the withdrawal speed which determines the lm thickness.…”

Section: Crystal Structures Of Pure and Mn-doped Zno Lms At Differenmentioning

confidence: 99%

“…Mn-doped ZnO lms deposited at 20 mm s À1 show a larger RMS roughness related to the pure ZnO lms and as the withdrawal speed increases from 20 mm s À1 to 80 mm s À1 , the value of RMS roughness of MZO lms gradually enhances, which is attributed to the increase in lm thickness and conrmed by other reports. 24,32 3.3 Transmittance spectra and FTIR spectra of Mn-doped ZnO lms Fig. 3a-e presents the transmittance spectra of pure and Mndoped ZnO (MZO) lms as recorded in the range from 300 to 700 nm.…”

Section: Crystal Structures Of Pure and Mn-doped Zno Lms At Differenmentioning

confidence: 99%

“…23 Aydemir et al suggested that the microstructural and optical properties of ZnO lms using dip-coating are strongly dependent on the withdrawal speeds and also proved by other investigators. 24,25 The systematic study of the fabrication UV photodetector based on Mn-doped ZnO (MZO) lms at different withdrawal speeds has not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural, optical and photoelectric properties of Mn-doped ZnO films used for ultraviolet detectors

Zhu

Yang

2019

RSC Adv.

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Mn-doped ZnO (MZO) films were prepared on glass substrates using sol-gel dip-coating technology. The microstructural, morphological, optical and photoelectric properties of MZO films were investigated at different withdrawal speeds (WS: 20, 40, 60 and 80 mm s À1 ). The X-ray diffraction (XRD) patterns showed that all the films obtained were polycrystalline with a hexagonal structure, and the highest crystallinity of MZO films was observed as films were deposited at 40 mm s À1 . The UV-Vis spectra revealed that the average optical transmittance of all samples was over 60% and the energy band gap of films decreased from 3.616 to 3.254 eV with the increase in withdrawal speed. The formed Au/MZO/Au photodetectors (PDs) indicate that a device prepared at 40 mm s À1 shows superior properties both in response speed and detection capability, and the rise time is 1.871 s and fall time is 3.309 s at 365 nm for 3 V bias and the detectivity (D*) reaches $1.7 Â 10 10 Jones. Moreover, the responsivity of PDs is also affected by the distance between Au electrodes and external bias. This research provides a simple way to fabricate the UV PDs based on MZO films with faster response and higher detectivity. Experimental details Sols preparation and deposition of Mn-doped ZnO lmsPreparation process of Mn-doped ZnO (MZO) lms is that zinc acetate dehydrate [(Zn(CH 3 CO 2 ) 2 $2H 2 O), purity 99.5%]

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Section: Crystal Structures Of Pure and Mn-doped Zno Lms At Differenmentioning

confidence: 99%

Section: Crystal Structures Of Pure and Mn-doped Zno Lms At Differenmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural, optical and photoelectric properties of Mn-doped ZnO films used for ultraviolet detectors

Zhu

Yang

2019

RSC Adv.

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“…The spin coating technique uses drop-casting to apply the sol-gel to the rotating substrate. During rotation, the extra liquid drains from the substrate (Figure 2) and, with a constant speed rotation, enables uniform deposition on the substrate [76]. The deposition is also influenced by additional factors, including coating duration and rotation speed [77].…”

Section: Thin Films (Spin-coating and Dip-coating Methods)mentioning

confidence: 99%

Coinage Metals Doped ZnO Obtained by Sol-Gel Method—A Brief Review

Vladut

Mocioiu

Soare

2023

Gels

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ZnO is one of the most studied oxides due to its nontoxic nature and remarkable properties. It has antibacterial and UV-protection properties, high thermal conductivity, and high refractive index. Various ways have been used to synthesize and fabricate coinage metals doped ZnO, but the sol-gel technique has received a lot of interest because of its safety, low cost, and facile deposition equipment. Coinage metals are represented by the three nonradioactive elements of group 11 of the periodic table: gold, silver, and copper. This paper, which was motivated by the lack of reviews on the topic, provides a summary of the synthesis of Cu, Ag, and Au-doped ZnO nanostructures with an emphasis on the sol-gel process and identifies the numerous factors that affect the morphological, structural, optical, electrical, and magnetic properties of the produced materials. This is accomplished by tabulating and discussing a summary of a number of parameters and applications that were published in the existing literature over the previous five years (2017–2022). The main applications being pursued involve biomaterials, photocatalysts, energy storage materials, and microelectronics. This review ought to serve as a helpful reference point for researchers looking into the many physicochemical characteristics of coinage metals doped ZnO, as well as how these characteristics vary according to the conditions under which experiments are conducted.

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“…A very fine coating of gel is thus formed, since there is rapid evaporation of the solvent during the extraction of the substrate. The thickness depends on the viscosity of the liquid, the surface tension, and especially the speed of removal; the higher the speed of removal is, the greater the thickness of the coating [16]. Once the first coating layer is obtained, the process can be repeated to form a multilayer structure.…”

Section: Sol-gel Coatingsmentioning

confidence: 99%

Surface Science Engineering through Sol-Gel Process

Carrera‐Figueiras¹,

Pérez‐Padilla²,

Estrella‐Gutiérrez³

et al. 2019

Applied Surface Science

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Sol-gel synthesis is used to obtain coatings that can modify the surfaces of metals to avoid corrosion or to enhance the biocompatibility and bioactivity of metals and their alloys that are of biomedical interest. Anticorrosion coatings composed of smart coatings and self-healing coatings will be described. TiO 2 , hydroxyapatite, bioglass, and hybrid coatings synthetized by sol-gel technology will be briefly introduced with regard to their role in surface-modifying metals for biomedical purposes. Finally, although there are other approaches to surface-modifying metals for either anticorrosion or biomedical purposes, sol-gel methods have several advantages in controlling surface chemistry composition and functionality.

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Effects of withdrawal speed on the microstructural and optical properties of sol–gel grown ZnO:Al thin films

Cited by 15 publications

References 55 publications

Structural, optical and photoelectric properties of Mn-doped ZnO films used for ultraviolet detectors

Structural, optical and photoelectric properties of Mn-doped ZnO films used for ultraviolet detectors

Coinage Metals Doped ZnO Obtained by Sol-Gel Method—A Brief Review

Surface Science Engineering through Sol-Gel Process

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