Heteroepitaxial Relation and Optical Properties of Cu-Doped ZnO Films Grown by Using Pulsed Laser Deposition

Jeon, Je-Hoon; Jeong, Se–Young; Cho, Chae-Ryong; Lee, Sang-A; Lee, Won–Jae; Ahn, Hyung-Soo; Kim, Hong-Seung

doi:10.3938/jkps.54.858

Cited by 15 publications

(7 citation statements)

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“…Additionally, Cu in its Cu 2 þ ionic state (0.072 nm) has similar ionic radius compared to Zn 2 þ (0.074 nm) and the similarities in their electronic shell structure allows Cu 2 þ ions substitution easily into the ZnO host lattice. So far, numerous attempts have been performed to fabricate the Cu-doped ZnO films for specific applications in the field of optoelectronics through various deposition techniques, such as spray pyrolysis [9,12], RF sputtering [13][14][15][16], DC sputtering [17], simultaneous RF and DC magnetron sputtering [18], low-temperature aqueous solution route [19], pulsed laser deposition [20] and co-reactive magnetron sputtering [21]. However, among these, we focused on simultaneous RF and DC magnetron sputtering technique which enables here for better adhesion, tunable dopant concentration and controllability of structural and optical properties by independently doping of dopant element into host lattice.…”

Section: Introductionmentioning

confidence: 99%

Enhanced photoluminescence properties of Cu-doped ZnO thin films deposited by simultaneous RF and DC magnetron sputtering

Sreedhar

Kwon

et al. 2016

Materials Science in Semiconductor Processing

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Section: Introductionmentioning

confidence: 99%

Enhanced photoluminescence properties of Cu-doped ZnO thin films deposited by simultaneous RF and DC magnetron sputtering

Sreedhar

Kwon

et al. 2016

Materials Science in Semiconductor Processing

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“…These drawbacks decrease the short circuit current and open circuit voltage in DSSCs and contribute significantly to the bottlenecking of the performance of the device. To address these lapses, many researchers tried to modify the ZnO nanostructures using different strategies including doping with 3d transition metals such as Mn, Co, Cr, Fe, Fr, Cu [21][22][23][24], or intra 4f transition rare earth (RE) metals such as La, Nd, Sm Ce, Er, Yb, Dy [25,26], as well as the coupled use of these metals. Recently, doping with RE gets paramount importance for the researchers because of their optical characteristics in the intra 4f transition [26].…”

Section: Introductionmentioning

confidence: 99%

Solution Processed Zn1−x−ySmxCuyO Nanorod Arrays for Dye Sensitized Solar Cells

et al. 2021

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Cu- and Sm-doped ZnO nanorod arrays were grown with 1 wt% of Sm and different weight percents (0.0, 0.5, 1.0 and 1.5 wt%) of Cu by two-step hydrothermal method. The influence of Cu concentration and precursor of Sm on the structural, optical and photovoltaic properties of ZnO nanorod arrays was investigated. An X-ray diffraction study showed that the nanorod arrays grown along the (002) plane, i.e., c-axis, had hexagonal wurtzite crystal structure. The lattice strain is present in all samples and shows an increasing trend with Cu/Sm concentration. Field emission scanning electron microscopy was used to investigate the morphology and the nanorod arrays grown vertically on the FTO substrates. The diameter of nanorod arrays ranged from 68 nm to 137 nm and was found highly dependent on Cu concentration and Sm precursor while the density of nanorod arrays almost remains the same. The grown nanorod arrays served as photoelectrodes for fabricating dye-sensitized solar cells (DSSCs). The overall light to electricity conversion efficiency ranged from 1.74% (sample S1, doped with 1 wt% of Sm and 0.0 wt% of Cu) to more than 4.14% (sample S4, doped with 1 wt% of Sm and 1.5 wt% of Cu), which is 60% higher than former sample S1. The increment in DSSCs efficiency is attributed either because of the doping of Sm3+ ions which increase the absorption region of light spectrum by up/down conversion or the doping of Cu ions which decrease the recombination and backward transfer of photo-generated electrons and increase the electron transport mobility. This work indicates that the coupled use of Cu and Sm in ZnO nanorod array films have the potential to enhance the performance of dye-sensitized solar cells.

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“…Due to the similar ionic radius and electronic shell structure have many physical and chemical properties, which are equivalent to those of Zn [13]. Up to now, multiple solutions have been performed to fabricate the Cu-doped ZnO (CZO) films and explore their excellent applications in optoelectronics by a variety of deposition techniques [14,15], which include pulsed laser deposition, simultaneous radio frequency (RF) and direct current (DC) magnetron sputtering (MS) and so on. Recent papers have reported on microstructure and different properties of CZO materials, such as electrical, piezooptical effects, optical and photosensitivity properties et al Structural and optical properties of ZnO films with heavy Cu-doping prepared by MS which were reported by Y. Liu et al [16].…”

Section: Introduction mentioning

confidence: 99%

Influence of Argon/oxygen Ratio on Linear and Nonlinear Optical Properties of Copper Doped ZnO Films

Wen¹,

Han²,

Yao³

et al. 2019

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Copper (Cu)-doped ZnO (CZO) films were grown by simultaneous direct current and radio frequency magnetron sputtering technique under the situation of different gas flow rates of Ar: O2 (1:1, 2:1 and 1:0). The X-ray diffraction patterns revealed the naturally polycrystalline ZnO films with the predominant reflection (002) peak, which referred to the hexagonal wurtzite structure toward c-axis. The elemental composition of thin films was analyzed by energy dispersive spectroscopy (EDS). The Cu concentrations in thin films increased with Ar ratio of up to 1:0. The EDS spectra of three kinds of elements indicate that Cu-doping has obvious and sophisticated effect on the chemical state of oxygen, but less effect on those of copper and zinc. Furthermore, the nonlinear absorption of CZO films was investigated by the way of Z-scan technique. These films demonstrated good nonlinear absorption behavior for the different gas flow rates of Ar: O2.

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Heteroepitaxial Relation and Optical Properties of Cu-Doped ZnO Films Grown by Using Pulsed Laser Deposition

Cited by 15 publications

References 0 publications

Enhanced photoluminescence properties of Cu-doped ZnO thin films deposited by simultaneous RF and DC magnetron sputtering

Enhanced photoluminescence properties of Cu-doped ZnO thin films deposited by simultaneous RF and DC magnetron sputtering

Solution Processed Zn1−x−ySmxCuyO Nanorod Arrays for Dye Sensitized Solar Cells

Influence of Argon/oxygen Ratio on Linear and Nonlinear Optical Properties of Copper Doped ZnO Films

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