Investigation of the effect of Mg doping for improvements of optical and electrical properties

Çağlar, Müjdat; Çağlar, Yasemin; Ilıcan, Saliha

doi:10.1016/j.physb.2015.12.049

Cited by 42 publications

(5 citation statements)

References 39 publications

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“…For 2 at.% and 4 at.% Mg-doping concentrations, the band gap values of ZnO are calculated to be 3.22 eV and 3.27 eV, respectively, which imply that a lower amount of Mg doping significantly increases the band gap value of ZnO. It can be also stated that there are many reported papers on the increase in the optical band gap of ZnO material after Mg doping in the literature and our results are consistent with them [28,29]. This enhancement in the optical band gap may be explained as follows.…”

Section: Resultssupporting

confidence: 90%

Role of Mg doping in the structural, optical, and electrical characteristics of ZnO-based DSSCs

Polat¹,

Yılmaz²,

Tomakin³

et al. 2017

Turk J Phys

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ZnO-and Mg-doped ZnO samples are prepared by spray pyrolysis on conducting glass substrates to fabricate ZnO-based dye-sensitized solar cells (DSSCs). Influences of Mg-doping content on the power conversion efficiencies of ZnO-based DSSCs are investigated. X-ray diffraction results show that all the samples exhibit a hexagonal wurtzite structure. Scanning electron microscopy data indicate that the ZnO sample has uniform rods with 1 µ m diameter.With respect to ZnO, the band gap value of 4 at.% Mg-doped ZnO samples improves to the value of 3.27 eV and a further increase in Mg level up to 6 at.% gives rise to a decline in the band gap value of 3.22 eV. Photoluminescence measurements illustrate that intensities of the ultraviolet peak and a red luminescence peak take their maximum values for 4 at.% Mg doping. From solar cell performance measurements, the best power conversion efficiency of 0.08% is obtained for the doping amount of 4 at.% Mg.

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Section: Resultssupporting

confidence: 90%

Role of Mg doping in the structural, optical, and electrical characteristics of ZnO-based DSSCs

Polat¹,

Yılmaz²,

Tomakin³

et al. 2017

Turk J Phys

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show abstract

“…The values of refractive index are the indicators whether the surface is a reflective or an absorber one. Refractive index (n) of S-Co3O4 film has been calculated by means of the following equation [37] ;…”

Section: Optical Properties Of the Filmmentioning

confidence: 99%

OPTICAL VIBRATIONAL AND MORPHOLOGICAL PROPERTIES OF S-Co3O4 NANOSTRUCTURED THIN FILM

Hurma¹

2017

ANADOLU UNIVERSITY JOURNAL OF SCIENCE AND TECHNOLOGY a - Applied Sciences and Engineering

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Sulphur doped Co3O4 (S-Co3O4) nanostructured thin film has been deposited on glass substrate. The film has been characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared (FTIR) and Raman spectroscopy. The surface appearance of the film was obtained using scanning electron microscopy (SEM) and atomic force microscopy (AFM). A double beam spectrophotometer equipped with an integrating sphere was used to measure the transmittance and reflectance measurements. Refractive index, extinction coefficient, optical conductivity and dielectric constant of the film were calculated. The XRD pattern shows that the film has only clear diffraction peak around 2θ = 29.26 o corresponding to the (111) plane of cubic Co3O4. The crystallite size was calculated to be approximately 24 nm. The Raman measurement revealed four peaks of Co3O4. FTIR spectrum of the film has been investigated in 500-3000 cm −1 region.

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“…This model is related to the dielectric response for transitions under the optical band gap. The experimental data of the undoped and/or doped ZnO were successfully applied to this model by the researchers, and reported [6,[20][21][22][23][24]. Therefore, to analyze the refractive index dispersion of the prepared films, the single oscillator model was used in this study.…”

Section: Dispersion Parameters Of the 3% Al Doped Zno Filmmentioning

confidence: 99%

IMPROVEMENT OF THE CRYSTALLINITY AND OPTICAL PARAMETERS OF ZnO FILM WITH ALUMINUM DOPING

Ilıcan¹

2016

AUBTD-A

Self Cite

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In this study, the undoped and Aluminum (Al) doped (1% and 3%) zinc oxide (ZnO) films were prepared by sol gel method via spin coating onto glass substrates. To investigate the structural and optical properties of the films, it was used to X-ray diffractometer and UV-VIS spectrophotometer, respectively. The prepared ZnO films are polycrystalline with a hexagonal wurtzite structure with a preferential orientation according to the (002) plane. The crystalline quality of ZnO film was improved by the increase of Al content. So, the most intense of (002) peak is observed for 3% Al-doped ZnO film. According to UV-vis spectroscopy spectra, the average optical transmittance and reflectance of all the films are greater than 76% and 14% in the visible range, respectively. The different methods were used to evaluate the absorption edges of the prepared films depending on the Al dopants. The optical band gap value of ZnO film shifted towards to the blue region in the first incorporation of Al in ZnO film, and then, this value shifted towards the red region with increasing Al content. The optical constants such as refractive index, extinction coefficient and dielectric constants were determined for undoped and Al doped ZnO films. The refractive index dispersion of the films was analyzed by using the single oscillator model. The dispersion parameters such as oscillator energy and dispersion energy values of the prepared films were determined.

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Investigation of the effect of Mg doping for improvements of optical and electrical properties

Cited by 42 publications

References 39 publications

Role of Mg doping in the structural, optical, and electrical characteristics of ZnO-based DSSCs

Role of Mg doping in the structural, optical, and electrical characteristics of ZnO-based DSSCs

OPTICAL VIBRATIONAL AND MORPHOLOGICAL PROPERTIES OF S-Co3O4 NANOSTRUCTURED THIN FILM

IMPROVEMENT OF THE CRYSTALLINITY AND OPTICAL PARAMETERS OF ZnO FILM WITH ALUMINUM DOPING

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