Polycrystalline ZnO nanorods for lasing applications

Tazri, Nur ‘Izazi Maad; Muskens, Otto L.; Shakfa, Mohammad Khaled; Maryam, W.

doi:10.1063/1.5083965

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…4(b), shift in lasing wavelength with increasing pump power was less than 0.05 nm and no additional peaks appeared indicating the stability of the lasing emission. Fixed number of modes with increasing pump power has been observed in our previous work from ZnO nanorod matts however there was a shift in wavelength with increasing pump power between 0.2 nm and 0.5 nm depending on the morphology of the sample [11,32,35]. The stability of the lasing emission from this work suggests that slight doping in preparing ZnO nanorods using chemical bath deposition method is a good way of making stable random lasers.…”

Section: Resultssupporting

confidence: 64%

Influence of Al doping on random lasing in ZnO nanorods

Fadzliana

Samsuri

Chan

et al. 2020

Optics & Laser Technology

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Random lasing was demonstrated from aluminum doped ZnO nanorods fabricated on ITO coated glass substrates using simple chemical deposition technique. Different Aluminum (Al) doping parameters were explored in an attempt to realize low threshold ZnO random lasers. Results confirm threshold was strongly dependent on doping concentration and suggestive of resonant coupling with Al in lowering the threshold by 2 orders of magnitude when compared to undoped ZnO nanorods. Lowest threshold was obtained from ZnO nanorods doped with 10 mM of aluminum, suggesting best doping concentration for ZnO random lasers formed by nanorod array. Results further indicate possibility of controlling random lasing properties by adjusting the doping concentration.

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Section: Resultssupporting

confidence: 64%

Influence of Al doping on random lasing in ZnO nanorods

Fadzliana

Samsuri

Chan

et al. 2020

Optics & Laser Technology

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“…PM-2022 Journal of Physics: Conference Series 2411 (2022) 012009 In Figure 2, the structural characteristics of undoped ZnO and Al-doped ZnO with different Al concentrations were studied. Three peaks were identified in the spectrum with the major (002) peak observed at 34.4 ° corresponding to ZnO [13]. This is consistent with a c-axis orientation-dependent preference for the growth direction.…”

Section: E)supporting

confidence: 69%

Ex-situ doping of ZnO structures as potential random lasers

Azmi

Pung²,

Kamil

2022

J. Phys.: Conf. Ser.

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Zinc oxide (ZnO) nanorods were formed on a glass substrate using chemical bath deposition (CBD) method for three hours at 96 °C. Doping of aluminum (Al) was realised by dipping into aluminum nitrate solution. XRD spectra shows reduced (002) peak related to the crystallinity of the synthesized ZnO with increasing doping concentrations. Doping with 35 mM exhibited highest Al concentration of 11.78 %. An apparent shift in bandgap energy with increasing doping concentration provides further evidence of doping occurring in the sample. Random lasing was observed at a pumping threshold of 9.0 mW and spectral width of 1.09 nm. Overall results indicate promising potential for random lasing to occur in ZnO nanorods doped under ex-situ doping conditions.

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“…Similarly, grain boundaries have been shown to affect random lasing emission [44] as such lasing from polycrystalline ZnO nanorods prepared by the same method (i.e. CBD) has also shown to increase threshold [45].…”

Section: Resultsmentioning

confidence: 99%