Enhanced ultraviolet photoluminescence from V‐doped ZnO thin films prepared by a sol–gel process

Wei, Ling; Zhang, Liting; Zhi‐Jian, Yang; Zhang, W. F.

doi:10.1002/pssa.200622500

Cited by 13 publications

(5 citation statements)

References 14 publications

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“…The possible reason is the decrease of the density of free exciton due to the decline of the crystalline quality of ZnO thin films. In previous studies, some groups reported that appropriate doping could enhance the ultraviolet emission of ZnO thin films [29][30][31]. For example, Zhang et al [30] prepared Ag-doped ZnO thin films on Si substrates by sol-gel method and found that Ag-doping improved the ultraviolet emission.…”

Section: Resultsmentioning

confidence: 99%

Influence of Fe-doping on the structural and optical properties of ZnO thin films prepared by sol–gel method

2010

Journal of Crystal Growth

167

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Section: Resultsmentioning

confidence: 99%

Influence of Fe-doping on the structural and optical properties of ZnO thin films prepared by sol–gel method

2010

Journal of Crystal Growth

167

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“…The green emission centered at 510 nm is also a typical luminescence characteristic of ZnO, which has been reported in many papers. [ 28–30 ] Many researchers suggest that green emissions in the range from 490 to 525 nm are associated with the V O (oxygen vacancy) defects on ZnO surface. [ 26,31,32 ] The existence of V O defects on the ZnO in the surface layer of the ZnSnO thin film has been confirmed from the aforementioned XPS analysis.…”

Section: Resultsmentioning

confidence: 99%

Deposition and Characterization of Zn–Sn–O (ZSO) Thin Films with Novel Optical Properties

Luo

Qian

et al. 2022

Physica Status Solidi (a)

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ZnO and SnO 2 are two important wide bandgap semiconductor materials, which have applications in many fields. [1][2][3][4][5][6] In order to tailor the properties of ZnO and SnO 2 , Sn-doped ZnO and Zn-doped SnO 2 have been studied. [7][8][9][10] Recently, nanocomposites composed of ZnO and SnO 2 and ternary compounds composed of Zn, Sn, and O have also attracted wide attention from scholars and engineers in different fields. For instance, Lee et al. [11] used pulsed laser deposition to prepare ZnO-SnO 2 composite films; those composite films were amorphous after annealed at 300 C but had good photoelectric properties and could be used to prepare high-quality field effect transistors. T. Tharsika et al. [12] used spray pyrolysis technique to prepare a ZnO-SnO 2 composite film and found that the morphology of the sample was controlled by the heat treatment and the Zn:Sn ratio in the growth solution. Yan et al. [13] prepared ZnO/ZnSnO 3 composites by hydrothermal method and found that those composites had better gas sensitivity than pure ZnSnO 3 . Zheng et al. [14] synthesized a ZnO-SnO 2 nanocomposite through a two-step route and found that the sensor prepared from the composite material showed better gas sensitivity to chlorine than the sensor prepared from pure SnO 2 . The ZnO-SnO 2 nanocomposites and ternary compounds composed of Zn, Sn, and O have attracted great attention from researchers worldwide because they have potential applications in field effect transistors, [11] solar cells, [14,15] thin-film transistors, [16] gas sensors, [17,18] photocatalysts, [19] and other fields.As we all know, the preparation methods and deposition parameters of nanomaterials have a large influence on the properties of nanomaterials. For ZnSnO nanomaterials, the impact of different preparation methods is particularly obvious. Normally, the ZnSnO films obtained by the physical vapor method show smooth surface and uniform grains. [11,13] However, ZnSnO thin films deposited by the wet chemical method show higher controllability of morphology and optoelectronic properties. [20,21] For instance, Tharsika et al. [20] fabricated ZnO-SnO 2 composite films by spray pyrolysis; the microstructure and optical properties of the ZnO-SnO 2 films were not only related to the atomic ratio of Zn to Sn in growth solution, but also related to the heat-treatment temperature. The ZnO-SnO 2 composite film heat-treated at an appropriate temperature showed a double-layered structure: The bottom layer was an amorphous Zn x Sn y O z compound, and the upper layer was made up by many rod-like or sheet-like ZnO nanostructures. The sol-gel process is an attractive way for preparing metal oxide nanofilms and is particularly suitable for preparing multicomponent metal oxide films. To our knowledge, up to present, there is no paper to report a two-layered film composed of crystalline ZnO and amorphous Zn x Sn y O z compound deposited using the sol-gel technique. In this research, the authors have prepared ZnSnO thin films with unique microstructure and optica...

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“…Dopants from group II, III and transition metals are found to change the properties of ZnO films drastically. Visible emission from ZnO nanocolloids [16], ZnO films deposited by sol-gel [17], ZnO nanofibers [18], ZnO nanoparticle suspension [19], Co doped ZnO powder [20], ZnO and Pt composite nanorods [21], copper [22] and vanadium [23] doped ZnO, has been reported. Effect of oxygen pressure on green emission from pulsed laser deposited (PLD) ZnO films has been discussed by Fan et al [23], whereas quenching of green emission is reported by Zhang et al [24].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence from screen printed ZnO based nanocrystalline films

Srivastava

Shukla

Misra

2011

Cryst. Res. Technol.

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Photoluminescence from ZnO based films deposited by screen printing is studied. PL spectra of undoped films show strong broad green emission around 500 nm and a weak (nearly one fourth of visible) UV emission around 398 nm. Further enhancement of 30% in the green emission is observed as 5 at.% Ca is doped in ZnO which for higher dopant concentration falls monotonously. The films are polycrystalline and the particle size lies between 33 to 47 nm as determined by Debye-Scherrer method. Film with 5 at.% doping is under tensile strain and the others are under compressive strain. SEM shows microclusters, consisting of nanoparticles, scattered throughout the substrate which club together with increase in dopant amount.

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Enhanced ultraviolet photoluminescence from V‐doped ZnO thin films prepared by a sol–gel process

Cited by 13 publications

References 14 publications

Influence of Fe-doping on the structural and optical properties of ZnO thin films prepared by sol–gel method

Influence of Fe-doping on the structural and optical properties of ZnO thin films prepared by sol–gel method

Deposition and Characterization of Zn–Sn–O (ZSO) Thin Films with Novel Optical Properties

Photoluminescence from screen printed ZnO based nanocrystalline films

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