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

Ambrico, P F; Ambrico, M.; Colaianni, A.; Schiavulli, L.; Dilecce, Giorgio; Benedictis, S. De

doi:10.1088/0022-3727/43/32/325201

Cited by 34 publications

(23 citation statements)

References 22 publications

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“…Additionally, the glow curve in the (Er, F) co-doped SnO 2 occurred at a slightly higher temperature as compared to the heavily F-doped SnO 2 system (448 K) [18]. The OVs, due to the heavy doping of O 2− ions with the F − ions, and the hole created by the co-dopant Er 3+ might possibly interact, leading to the formation of an appreciable concentration of trapped states resulting in intense TL emission [49]. In addition to this simple correlation, the (Er, F) co-doping might be creating deeper traps and increasing the density of the existing traps in addition to enhancing TL intensity.…”

Section: Resultsmentioning

confidence: 96%

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Kumar¹,

Uma²,

Nagarajan³

2014

Turk J Phys

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Uniformly (Er, F) co-doped SnO 2 nanocrystals, obtained by a low-temperature solution-based method, were characterized by a variety of analytical techniques. The structure, morphology, and ratio of the elements were confirmed by PXRD, SEM, and TEM analysis, respectively. From XPS analysis, atomic concentrations of Sn, O, and F were quantified. Interparticle pore size increased significantly (with a mean pore diameter of 25.82 nm) in the codoped sample. Higher in-plane oxygen vacancies and bands due to multiphonon scattering were observed in the Raman spectrum of the sample. The defect traps in the sample were experimentally determined using TL spectroscopy. A broad intense glow curve at 485 K and a weak emission at 600 K in the TL spectrum were quenched on exposure to UV radiation. A large blue shift of the exciton absorption (due to the Moss-Burstein effect) and sharp bands due to intraconfigurational f − f transitions were observed for (Er, F) co-doped SnO 2 with an estimated band gap of 4.18 eV.From the photoluminescence spectral studies, 3 types of emission centers at 471 nm, 546 nm, and 627 nm were detected.Co-doping stabilized ferromagnetism in SnO 2 at room temperature.

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Section: Resultsmentioning

confidence: 96%

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Kumar¹,

Uma²,

Nagarajan³

2014

Turk J Phys

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“…With considering simple hypotheses, a relatively tractable equation can be derived for the TL glow curve [138]. The hypotheses taken are provided in figure 11 with detrapping electrons, from a single detrapping level, recombining with trapped holes.…”

Section: Thermally Stimulated Luminescencementioning

confidence: 99%

Charge trap spectroscopy in polymer dielectrics: a critical review

Teyssèdre¹,

Zheng²,

Boudou³

et al. 2021

J. Phys. D: Appl. Phys.

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Trapping phenomena are essential features controlling the transport properties of insulating materials. Depending on the energy depth, traps can either assist transport or lead to long-lasting storage of charges. The consequences of charge trapping are non-linear phenomena and electric field distribution distortion in the dielectric bulk. The important characteristics about traps are the nature of the levels, their depth in energy, and their density. In this review, we discuss the different techniques available to probe the energetics of traps, particularly in insulating polymers. The methods implemented for approaching the characteristics of traps range from atomistic simulation based on known physical/chemical defects, identification by spectroscopic techniques, and coupled opticalelectrical or thermal-electrical techniques. The review is focused on methods involving thermal or optical excitation coupled to detection using electrical or luminescence response with questioning about the physical hypotheses behind the analysis and the difference in response obtained through the various approaches. The technical implementation of these methods is described, along with examples of application. The differences in trap depth estimation from optical and thermal methods is discussed as well as the impact of having distributed trap depths. The input of luminescence techniques, which provide a fingerprint of chemical groups involved in charge recombination, is put forward.

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“…Like for TSDC, with simple hypotheses as electrons escaping from a single trap level, followed by recombination on trapped holes, a simple equation holds for the TL glow curve [27]. Figure 2 details the hypotheses taken.…”

Section: B Methods With Stimulated Detrappingmentioning

confidence: 99%

Charge Trap Spectroscopies in Polymer Dielectrics: Application to BOPP

Teyssèdre

Mendoza-Lopez

Laurent

et al. 2021

2021 3rd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)

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Polymer dielectrics are in use in a variety of applications in active or passive electrical components. Their propensity to store electrical charges is used e.g. to form electrets but is a drawback when insulation properties are looked for. It is therefore essential to investigate the traps characteristic for a given material because trapping phenomena control the transport properties and therefore the field distribution. Different trap spectroscopies are available to infer the nature of traps, their energy depth and their amount. In the first part of this communication, we briefly review the different methods for traps characterization, emphasizing on strength and weaknesses of the methods. In a second part, results obtained on bioriented polypropylene are used to illustrate the difference in trap depth estimation obtained using thermal and optical excitation to release charges from traps. The differences are discussed with introducing results from luminescence induced by charge recombination.

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

Cited by 34 publications

References 22 publications

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Optical and magnetic properties of (Er, F) co-doped SnO$_{2}$ nanocrystals

Charge trap spectroscopy in polymer dielectrics: a critical review

Charge Trap Spectroscopies in Polymer Dielectrics: Application to BOPP

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