Effect of surface charge trapping on dielectric barrier discharge

Li, Ming; Li, Chengrong; Zhan, Huamao; Jinbao, Xu; Wang, Xinxin

doi:10.1063/1.2838340

Cited by 122 publications

(100 citation statements)

References 7 publications

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“…Recently, long lifetime of charge trapping on alumina used as 38 dielectric in DBD plasma has been evidenced by Thermally stimulated current [1] and Thermoluminescence 39 technique [4]. We found that the adsorbed electrons in the case of alumina were trapped in shallow traps 40 during plasma running and have mainly an energy of about 1eV [4], i.e.…”

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confidence: 93%

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Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes

Ambrico¹,

Ambrico²,

Colaianni³

et al. 2010

J. Phys. D: Appl. Phys.

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In this study, the charge trapping effect in alumina dielectric surfaces has been deeply investigated by means of a dedicated dielectric barrier discharge apparatus in different discharge regimes and gas mixtures. This work further validates our previous findings in the case of air discharges in a filamentary regime. Long lasting charge trapping has been evidenced by ex situ thermoluminescence characterizations of alumina dielectric barrier plates exposed to a plasma. The density of trapped surface charges was found to be higher in the glow discharge with respect to pseudo-glow and filamentary regimes, and for all regimes the minimum trap activation temperature was 390 K and the trap energy was less than or around 1 eV. This implies that in the case of glow discharges a higher reservoir of electrons is present. Also, the effect was found to persist for several days after running the discharge.

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confidence: 93%

“…The surface charge trapping at dielectric surface due to exposure to atmospheric pressure dielectric barrier 34 discharge (DBD) plasma can influence the discharge regime [1]; in fact surface charges act as a reservoir that 35 can contribute to stabilize a glow discharge regime for instance in air discharges [2]. Golubovskii et al …”

mentioning

confidence: 99%

Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes

Ambrico¹,

Ambrico²,

Colaianni³

et al. 2010

J. Phys. D: Appl. Phys.

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“…So far, however, these combined data are not available for any experiment. For sure, surface charges have been measured in dielectric barrier discharges [25,24,23,22] and of course in complex plasmas, where in fact a great variety of techniques has been invoked to determine the charge of floating µm-sized dust particles [13,14,15,16,17,18,19]. But particularly in the experiments measuring grain charges the diagnostics of the hosting plasma is usually missing.…”

Section: Critiquementioning

confidence: 99%

“…Surface charges affect also the physics of dielectric barrier discharges -a discharge type of huge technological impact [20,21,22,23,24,25].…”

Section: Introductionmentioning

confidence: 99%

Physisorption kinetics of electrons at plasma boundaries

2009

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Abstract. Plasma-boundaries floating in an ionized gas are usually negatively charged. They accumulate electrons more efficiently than ions leading to the formation of a quasi-stationary electron film at the boundaries. We propose to interpret the build-up of surface charges at inert plasma boundaries, where other surface modifications, for instance, implantation of particles and reconstruction or destruction of the surface due to impact of high energy particles can be neglected, as a physisorption process in front of the wall. The electron sticking coefficient se and the electron desorption time τe, which play an important role in determining the quasi-stationary surface charge, and about which little is empirically and theoretically known, can then be calculated from microscopic models for the electron-wall interaction. Irrespective of the sophistication of the models, the static part of the electron-wall interaction determines the binding energy of the electron, whereas inelastic processes at the wall determine se and τe. As an illustration, we calculate se and τe for a metal, using the simplest model in which the static part of the electron-metal interaction is approximated by the classical image potential. Assuming electrons from the plasma to loose (gain) energy at the surface by creating (annihilating) electron-hole pairs in the metal, which is treated as a jellium half-space with an infinitely high workfunction, we obtain se ≈ 10 −4 and τe ≈ 10 −2 s. The product seτe ≈ 10 −6 s has the order of magnitude expected from our earlier results for the charge of dust particles in a plasma but individually se is unexpectedly small and τe is somewhat large. The former is a consequence of the small matrix elements occurring in the simple model while the latter is due to the large binding energy of the electron. More sophisticated theoretical investigations, but also experimental support, are clearly needed because if se is indeed as small as our exploratory calculation suggests, it would have severe consequences for the understanding of the formation of surface charges at plasma boundaries. To identify what we believe are key issues of the electronic microphysics at inert plasma boundaries and to inspire other groups to join us on our journey is the purpose of this colloquial presentation.PACS. 52.27.Lw Dusty or complex plasmas -52.40.Hf Plasma-material interaction, boundary layer effects -68.43.-h Chemi-/Physisorption: adsorbates on surfaces -73.20.-r Electron states at surfaces and interfaces

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“…These can be injected into SiR insulating surfaces to form surface charge. This is a major cause of surface degradation and surface discharge [6][7][8]. Accumulated surface charge should be avoided or efficiently relaxed, to protect SiR materials against insulation failure.…”

Section: Introductionmentioning

confidence: 99%

Kinetics of Charge Accumulation and Decay on Silicone Rubber/SiO₂Nanocomposite Surface

Liu¹,

Li²,

Du³

2016

Journal of Electrical Engineering and Technology

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-The accumulation and decay of surface charge on silicone rubber (SiR)/SiO 2 nanocomposites under a unipolar corona discharge field was investigated. The effect of the weight ratio of SiO 2 nanoparticles from 0.1 to 0.7 wt.% was studied. Attenuated total reflection infrared spectra of the SiR/SiO 2 nanocomposites indicated that the SiO 2 nanoparticles chemically and physically interacted with the SiR matrix. This facilitated the SiR chains in restricting the injection of surface charge into the bulk nanocomposite. SiR composites containing SiO 2 nanoparticles (especially that containing 0.1 wt.% SiO 2 ) exhibited significantly reduced surface discharge. This approach may have application in outdoor SiR electrical insulators.

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Effect of surface charge trapping on dielectric barrier discharge

Cited by 122 publications

References 7 publications

Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes

Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes

Physisorption kinetics of electrons at plasma boundaries

Kinetics of Charge Accumulation and Decay on Silicone Rubber/SiO₂Nanocomposite Surface

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Effect of surface charge trapping on dielectric barrier discharge

Cited by 122 publications

References 7 publications

Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes

Thermoluminescence study of the trapped charge at an alumina surface electrode in different dielectric barrier discharge regimes

Physisorption kinetics of electrons at plasma boundaries

Kinetics of Charge Accumulation and Decay on Silicone Rubber/SiO2Nanocomposite Surface

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Product

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Kinetics of Charge Accumulation and Decay on Silicone Rubber/SiO₂Nanocomposite Surface