Effects of Na-doping on the efficiency of ZnO nanorods-based dye sensitized solar cells

Polat, İ.

doi:10.1007/s10854-014-2081-1

Cited by 13 publications

(7 citation statements)

References 32 publications

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“…Similar results have also been reported by other researchers [32,33]. Krithiga et al [34] considered that increase of optical band gap could be attributed to reduction of the interstitial Zn or grain size.…”

Section: Resultssupporting

confidence: 88%

“…The results indicate that PL spectra are strongly dependent on the metal (Na or Cu) doping content. Generally, the ZnO usually exhibits an UV emission peak which originates from the free excitions recombination [33] and a broad visible emission band. An UV emission centered at 380 nm and a broad green-yellow emission band has been observed in the PL spectra of ZnO.…”

Section: Resultsmentioning

confidence: 99%

“…Wang et al thought that the result would be attributed to the suppressing of V O defects by the Na doping and the passivation of present V O defects by the formation of (Na Zn -V O ) ?/0 complexes [16]. Polat [33] considered that the increase of UV emission peak intensity and decrease of visible emission would be ascribed to the improved crystal quality and reduction of defects (such as V O and O i ) in the crystal structure. Therefore, enhancement of UV emission and reduction of visible emission can be attributed to the improved crystal quality and reduction of V O and O i .…”

Section: Resultsmentioning

confidence: 99%

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Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Zhao

et al. 2015

J Mater Sci: Mater Electron

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Na x Cu y Zn 1-x-y O thin films were prepared by sol-gel method on quartz glass. The effect of Na (or Cu) doping on the microstructure, surface morphology, optical properties of the thin films was investigated. The Na 0.1 Cu 0.01 Zn 0.89 O thin film has the largest average grain size and the best preferential c-axis orientation, which may be attributed to the difference in ionic radius between Zn and Na (or Cu). The Na 0.1 Cu 0.01 Zn 0.89 O thin film also presents denser morphology with little voids and the smallest optical band gap, which may be attributed to band edge bending and the larger grain size. The largest intensity of A 1 (LO) modes may be due to the major structural defect concentrations. The quenching of UV and visible emissions, which may be attributed to the increase of non-radiative recombination transition, has been observed in the Na 0.1 Cu 0.01 Zn 0.89 O and Na 0.1-Cu 0.02 Zn 0.88 O thin films.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Zhao

et al. 2015

J Mater Sci: Mater Electron

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“…The substrates were cleaned ultrasonically with soap, ethanol, and distilled water for 10 min, consecutively. The growth process of the ZnO seed layer can be found in our previous work [22]. After this procedure, Mg-doped ZnO samples (Zn 1 − x Mg x O: x = 0.0, 0.02, 0.04, 0.06) were grown by SP at different doping levels.…”

Section: Methodsmentioning

confidence: 99%

“…They reported that the power conversion efficiencies were improved by Al doping [21]. Polat fabricated DSSCs consisting of Na-doped ZnO nanorods on fluorine-doped tin oxide (FTO) substrates as photoanodes and he found that the power conversion efficiency increased from 0.114% to 0.220% by doping of 2 at.% Na [22]. Additionally, Mg-doped ZnO thin films were synthesized by Raj et al on FTO substrates to fabricate ZnO-based DSSCs.…”

Section: Introductionmentioning

confidence: 99%

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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Synthesis of ZnO Nanorod Using Hydrothermal Technique for Dye-Sensitized Solar Cell Application

Noorasid

Arith

Alias

et al. 2021

Lecture Notes in Mechanical Engineering

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Effects of Na-doping on the efficiency of ZnO nanorods-based dye sensitized solar cells

Cited by 13 publications

References 32 publications

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

Microstructure, surface morphology and optical properties of Na x Cu y Zn1−x−y O thin films

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

Synthesis of ZnO Nanorod Using Hydrothermal Technique for Dye-Sensitized Solar Cell Application

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