The impacts of growth temperature on morphologies, compositions and optical properties of Mg-doped ZnO nanomaterials by chemical vapor deposition

Wang, X.H.; Huang, Liming; Niu, Lvye; Li, R.B.; Fan, Donghua; Zhang, Fabi; Chen, Z.W.; Wang, X.; Guo, Qi

doi:10.1016/j.jallcom.2014.10.077

Cited by 35 publications

(12 citation statements)

References 25 publications

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“…Among of them, the various morphologies of ZnO include nanodiscs, nanowires (NWs), nanotubes, nanorods (NRs), nanoplates, nanopins, and nanosheets (NSs) have also been fabricated [5][6][7][8][9][10][11] . ZnO nanostructure have many synthetic methods, such as hydrothermal method (HTM), chemical vapor deposition (CVD), aqueous solution methods (ASM), pulsed laser deposition (PLD), electrochemical deposition (ECD), and electron-beam lithography (EBL) 8,[12][13][14][15][16][17][18][19] . Currently, ZnO nanostructures have been applied to optical and electronic devices, such as field-effect transistors (FETs), UV photodetectors (UV PD), light emitting diodes (LEDs), glucose sensors, varistors devices, gas sensors [20][21][22][23][24][25][26][27][28] .…”

Section: Introductionmentioning

confidence: 99%

High selectivity to ethanol gas sensor based on ZnO nanosheets decorated with Ag nanoparticles by aqueous solution and photochemical deposition

Young¹,

Liu²

2020

Preprint

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We demonstrated the fabrication of Ag NPs decorated ZnO NSs on a glass substrate using the aqueous solution and photochemical deposition method. The synthesis process is room temperature. This two-dimensional ZnO NSs can increase the performance of gas sensors due to increase the surface-to-volume ratio. Through increasing the surface-to-volume ratio of nanostructures, it is possible to increase the absorption potion of the target gas. In addition, noble metal NPs attached to the ZnO nanostructure can also increase the performance of gas sensors because Ag NPs act as strong electron acceptors, it will be induced enhanced electron depletion layer. As a result, the Ag NPs decorated ZnO NSs gas sensor has high selectivity to ethanol, as well as improved gas sensing performance to ethanol as compared to ZnO.

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Section: Introductionmentioning

confidence: 99%

High selectivity to ethanol gas sensor based on ZnO nanosheets decorated with Ag nanoparticles by aqueous solution and photochemical deposition

Young¹,

Liu²

2020

Preprint

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“…These properties make ZnO suitable to be used as active materials in electronics and photonics [2,3]. The deposition of ZnO thin films have been reported using several techniques such as radio frequency magnetron sputtering [4], pulsed laser deposition [5], chemical vapor deposition [6], sol-gel [7] and spray pyrolysis [8,9]. Among these, spray pyrolysis has some advantages due to its easy scalability and inexpensive experimental arrangement.…”

Section: Introductionmentioning

confidence: 99%

Transparent and conductive Al/F and In co-doped ZnO thin films deposited by spray pyrolysis

Hadri

Taïbi

hat

et al. 2016

J. Phys.: Conf. Ser.

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In doped ZnO (IZO), In-Al co-doped ZnO (IAZO) and In-F co-doped ZnO (IFZO) were deposited on glass substrates at 350 °C by spray pyrolysis technique. The structural, optical and electrical properties of as-deposited thin films were investigated and compared. A polycrystalline and (002) oriented wurtzite crystal structure was confirmed by X-ray patterns for all films; and the full width at half-maximum (FWHM) of (002) diffraction peak increased after co-doping. The investigation of the optical properties was performed using Uv-vis spectroscopy. The average transmittances of all the films were between 70 and 85%. Hall Effect measurements showed that the electrical conductivity of co-doped films increased as compared with IZO thin film. The highest conductivity of about 16.39 Ω-1 cm-1 was obtained for as-deposited IFZO thin film. In addition, the thin films were annealed at 350 °C for two hour under Ar atmosphere and their optical, electrical properties and the associated photoluminescence (PL) responses of selected films were analysed. After annealing, the electrical conductivity of all thin films was improved and the optical transmittance remained above 70%. Room temperature PL revealed that the annealed IAZO thin film had a strong green emission than that of IZO film.

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“…Among these semiconductor oxide materials, zinc oxide (ZnO) has attracted considerable attention because of its wide band gap of 3.37 eV and high exciton binding energy of 60 meV, which is much larger than that of GaN (25 meV) and ZnSe (22 meV)12. To utilize the optical and electrical properties of ZnO sufficiently, an excellent method is to dope proper transition elements, such as Co, Mn, Fe, Ni, etc131415.…”

mentioning

confidence: 99%

“…Semiconductor oxide materials based on energy-gap engineering have garnered widespread interest in many aspects, for instance, in catalysts, sensors, electronic devices, detectors and solar cells, among others 1 2 3 4 5 6 7 8 9 10 11 . Among these semiconductor oxide materials, zinc oxide (ZnO) has attracted considerable attention because of its wide band gap of 3.37 eV and high exciton binding energy of 60 meV, which is much larger than that of GaN (25 meV) and ZnSe (22 meV) 12 . To utilize the optical and electrical properties of ZnO sufficiently, an excellent method is to dope proper transition elements, such as Co, Mn, Fe, Ni, etc 13 14 15 .…”

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confidence: 99%

Rapid and High-Efficiency Laser-Alloying Formation of ZnMgO Nanocrystals

Liu

Wang

et al. 2016

Sci Rep

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Applications of ZnMgO nanocrystals (NCs), especially in photoelectric detectors, have significant limitations because of the unresolved phase separation in the synthesis process. Here, we propose a rapid and highly efficient ZnMgO NC alloying method based on pulsed laser ablation in liquid. The limit value of homogeneous magnesium (Mg) is pushed from 37% to 62%, and the optical band gap is increased to 3.7 eV with high doping efficiency (>100%). Further investigations on the lattice geometry of ZnMgO NCs indicate that all ZnMgO NCs are hexagonal wurtzite structures, and the (002) and (100) peaks shift to higher diffraction angles with the increase in Mg doping content. The calculated results of the lattice constants a and c slightly decrease based on Bragg’s law and lattice geometry equations. Furthermore, the relationship between annealing temperature and the limit value of homogeneous Mg is examined, and the results reveal that the latter decreases with the former because of the phase separation of MgO. A probable mechanism of zinc magnesium alloy is introduced to expound on the details of the laser-alloying process.

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The impacts of growth temperature on morphologies, compositions and optical properties of Mg-doped ZnO nanomaterials by chemical vapor deposition

Cited by 35 publications

References 25 publications

High selectivity to ethanol gas sensor based on ZnO nanosheets decorated with Ag nanoparticles by aqueous solution and photochemical deposition

High selectivity to ethanol gas sensor based on ZnO nanosheets decorated with Ag nanoparticles by aqueous solution and photochemical deposition

Transparent and conductive Al/F and In co-doped ZnO thin films deposited by spray pyrolysis

Rapid and High-Efficiency Laser-Alloying Formation of ZnMgO Nanocrystals

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