Analysis and interpretation of photo-stimulated discharge spectrum for polypropylene films under different electric and geometrical conditions

Ma, Pengtao; Zhang, Yewen; Holé, Stephane; Zheng, Feihu; Min, Gu; An, Zhenlian

doi:10.1016/j.elstat.2016.10.004

Cited by 6 publications

(9 citation statements)

References 36 publications

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“…The metal nature of the electrodes, through the work function, directly influences the PSD response. Ma et al [153], studying the photo-stimulated discharge spectrum of polypropylene films, showed that the position of the peak is shifted to the longer wavelengths when Au (work function of 5.1 eV) is replaced by Al (work function of 4.28 eV) for the electrode facing to the light irradiation. The thickness and geometry of electrodes are also important parameters.…”

Section: The Experimental Parameters Linked To the Sample And Electrodesmentioning

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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Section: The Experimental Parameters Linked To the Sample And Electrodesmentioning

confidence: 99%

Charge trap spectroscopy in polymer dielectrics: a critical review

Teyssèdre¹,

Zheng²,

Boudou³

et al. 2021

J. Phys. D: Appl. Phys.

Self Cite

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“…Concerning the double PSD peak located in the 260-200 nm range, optical detrapping is not excluded, but other phenomena like photo-emission from the metallic electrode can be at play. Actually, by changing the metal nature of the front electrode, Ma et al [4] have shown a direct correlation between the work function of the metal and the cut-off wavelength of the peak observed in the 200-300 nm range for BoPP. The authors suggest that this peak results from electron emission via photoelectric effect from the front finger electrode when a local strong electric field exists.…”

Section: A Psd/limm Spectramentioning

confidence: 99%

“…Another point to consider concerns the fingered electrode used as front electrode. It can first induce a field enhancement du to edge effect and as a consequence, charge injection and trapping at the edge of the fingers of the top electrode can be increased [4]. Besides, the fingered electrode plays a great role when considering the area (or volume) of the polymer material probed when LIMM and PSD are performed.…”

Section: A Psd/limm Spectramentioning

confidence: 99%

“…Different complementary methods, essentially with thermal or optical excitation, can be used to probe the traps. Thermally stimulated current and luminescence are well adapted to probe the shallow traps distribution [2], whereas Photo-Stimulated Discharge (PSD) is mostly used for traps in the range 1 eV to more than 4 eV, depending on the light source characteristics [3,4]. Recombination induced luminescence can also give information on deep traps acting as recombination centres [5].…”

Section: Introductionmentioning

confidence: 99%

“…It can also be perturbed by dipolar relaxations during measurement. In order to discriminate the origin of the different PSD peaks recorded during current measurements, the influence of different parameters can be tested: the geometry of the electrode facing the scanning light (full electrode, semi-transparent electrode, finger-like shape electrode), the nature of the metallic electrodes or the application of a small voltage during PSD measurements [4].…”

Section: Introductionmentioning

confidence: 99%

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Combined-PSD and LIMM Measurements for Traps Characterization in BoPP Thin Films

Boudou

Berquez

Teyssedre

2020

2020 IEEE 3rd International Conference on Dielectrics (ICD)

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Understanding charge trapping phenomena in dielectrics requires a good description of the distribution in density, energetic levels, and if possible nature of the centers stabilizing charges. This topic is of great interest for many application fields as electronics or energy storage. Along this objective, fractionated-PSD (Photo-stimulated discharge) measurements, combined with space charge measurements using LIMM (Light Intensity Modulation Method) are developed in order to discriminate the origin of the different peaks observed in the PSD spectrum of Bi-oriented Polypropylene thin films.

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Advances in Polymer Dielectrics with High Energy Storage Performance by Designing Electric Charge Trap Structures

Meng,

Zhang,

Zhang

et al. 2023

Advanced Materials

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Dielectric capacitors have been developed for nearly a century, and all‐polymer film capacitors are currently the most popular. Much effort has been devoted to studying polymer dielectric capacitors and improving their capacitive performance, but their high conductivity and capacitance losses under high electric fields or elevated temperatures are still significant challenges. Although many review articles have reported various strategies to address these problems, to the best of current knowledge, no review article has summarized the recent progress in the high‐energy storage performance of polymer‐based dielectric films with electric charge trap structures. Therefore, this paper first reviews the charge trap characterization methods for polymeric dielectrics and discusses their strengths and weaknesses. The research progress on the design of charge trap structures in polymer dielectric films, including molecular chain optimization, organic doping, blending modification, inorganic doping, multilayered structures, and the mechanisms of the charge trap‐induced enhancement of the capacitive performance of polymers are systematically reviewed. Finally, a summary and outlook on the fundamental theory of charge trap regulation, performance characterization, numerical calculations, and engineering applications are presented. This review provides a valuable reference for improving the insulation and energy storage performance of dielectric capacitive films.

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Analysis and interpretation of photo-stimulated discharge spectrum for polypropylene films under different electric and geometrical conditions

Cited by 6 publications

References 36 publications

Charge trap spectroscopy in polymer dielectrics: a critical review

Charge trap spectroscopy in polymer dielectrics: a critical review

Combined-PSD and LIMM Measurements for Traps Characterization in BoPP Thin Films

Advances in Polymer Dielectrics with High Energy Storage Performance by Designing Electric Charge Trap Structures

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