Electrostatic spray deposited zinc oxide films for gas sensor applications

Ghimbeu, Camélia Matei; Schoonman, J.; Lumbreras, Martine; Siadat, Maryam

doi:10.1016/j.apsusc.2007.03.039

Cited by 129 publications

(61 citation statements)

References 50 publications

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“…[3][4][5][6] In this report, we present the work done in our laboratory on the growth of ZnO nanostructures by thermal evaporation technique and investigation of their gas sensing properties. The studies aim at (a) development of sensors with better sensitivity and room temperature operation provided by increased surface area, (b) single nanowire sensors with a view to miniaturize them, (c) comparison of the sensing characteristics of single nanowires and films made using nanowires to clearly differentiate the intragrain and grain boundary contributions as well as to develop sensors with better sensitivity/ selectivity.…”

Section: Introductionmentioning

confidence: 99%

Development of gas sensors using ZnO nanostructures

2010

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Different ZnO nanostructures such as nanowires, nanobelts and tetrapods have been grown and used for preparation of thick film (with random grain boundaries) as well as isolated nanowire/nanobelt gas sensors. Sensitivity of different type of sensors has been studied to H 2 S and NO gases. The results show that the response of ZnO sensors to H 2 S arises from grain boundary only whereas both grain boundaries and intragrain resistances contribute towards response to NO. In addition, oxygen vacancies in the lattice were also seen to help in improvement of sensor response. Room temperature operating H 2 S and NO sensors based on ZnO nanowires have been demonstrated. Further, sensors based on isolated nanobelts were found to be highly selective in their response to NO.

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Section: Introductionmentioning

confidence: 99%

Development of gas sensors using ZnO nanostructures

2010

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“…The peak at 328 cm −1 is assigned to second-order Raman scattering involving acoustic phonons [35]. The peak at 579 cm −1 is attributed to the E 1 (LO) mode, which is caused by the defects such as oxygen vacancies (VO) and zinc interstitials (Zni) [36]. As for the peak located at 662 cm −1 , it corresponds to the multiphonon scattering (E 2 (high), E 2 (low)) [37].…”

Section: Raman Spectroscopymentioning

confidence: 99%

Controlled synthesis of nano-ZnO via hydro/solvothermal process and study of their optical properties

Moulahi

Sediri

2016

Optik

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“…Consequently, if the flow rate is increased, a larger quantity of liquid will accumulate on the substrate because of its slow drying rate [23]. In addition, droplet size (d) is proportional to the flow rate (Q) according to d = ε r 1/6 (Q/k) 1/3 equation [24]. In this formula, d is the spray droplet size, ε r the relative dielectric constant of solution, Q the flow rate of the solution and k is the electrical conductivity of the precursor liquid.…”

Section: Electrospray Deposition Of Sno 2 Film On Al Plate and Pt Coamentioning

confidence: 99%