Thermal modeling and calibration in (F)LIMM using an external bias field: Theory and experiment

Velazquez-Salazar, Amanda; Berquez, Laurent; Marty-Dessus, Didier

doi:10.1109/tdei.2017.007029

Cited by 11 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This method is originally proposed by Lang [23] in the 1980s, and the characterization of space charge distribution had been performed under volt-off after external DC voltage application. Recent development has been reported that LIMM measurement is carried out under volt-on [24]. The LIMM is much suitable to clarify the space charge characteristics in a polymer film with only several micrometer thickness, which is a typical thickness of passivation layer on a semiconductor chip.…”

Section: (F)limm Methodsmentioning

confidence: 99%

“…Finally, a mathematical treatment allows charge density profile reconstruction in the direction of the sample thickness. A modulated laser beam of a frequency f heating a surface S of a top electrode sputtered on a dielectric nonpolar sample of thickness L, to which an additional DC voltage V ht is applied, the fundamental (F)LIMM equation for the complex current I(f) can be expressed by [24]:…”

Section: (F)limm Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Behavior of Space Charge in Polyimide and the Influence on Power Semiconductor Device Reliability

Tajiri¹,

Muto²,

Marty-Dessus³

et al. 2021

Polyimide for Electronic and Electrical Engineering Applications

Self Cite

View full text Add to dashboard Cite

Polyimide is widely used in film form as a passivation material for power semiconductor devices such as Si, SiC, and GaN. The magnitude of the electric field at the edge termination area of these semiconductor devices is becoming higher due to the increase of operational voltage and/or demand for shrinking the edge termination area to increase device active area. Hence, it is concerned that the accumulation of space charge in the encapsulation and passivation material may affect the insulation performance of these devices, for example, the degradation of withstand voltage due to distortion of the internal electric field caused by space charge accumulation. To design space charge resistance of semiconductor devices, it is important to understand the space charge behavior in polyimide films with a thickness of several to several tens of micrometers. This chapter addresses practical implementation, specifications, and issues on space charge in polyimide insulation on power semiconductor devices focusing on the space charge measurements in thin polyimide films using the latest developed LIMM method and DC conductivity measurements.

show abstract

Section: (F)limm Methodsmentioning

confidence: 99%

Section: (F)limm Methodsmentioning

confidence: 99%

Behavior of Space Charge in Polyimide and the Influence on Power Semiconductor Device Reliability

Tajiri¹,

Muto²,

Marty-Dessus³

et al. 2021

Polyimide for Electronic and Electrical Engineering Applications

Self Cite

View full text Add to dashboard Cite

show abstract

“…Front and back electrodes are connected to the HVDC source and the ammeter respectively. A 100 mW 660 nm modulated laser diode is used in the frequency range from 10 Hz to 10 kHz for space charge measurement using LIMM [18]. Note that LIMM is sensitive near the irradiated electrode (some µm) with a micrometer resolution.…”

Section: Space Charge and Psd Measurementsmentioning

confidence: 99%

Electronic properties of polyethylene naphthalate as derived from photo-stimulated discharge, luminescence experiments and quantum chemical calculation

Mendoza Lopez,

Teyssedre,

Boudou

et al. 2024

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

The electronic properties of thin films of Poly(ethylene 2,6-naphthalate) –PEN, are investigated based on their photo-physical (optical absorption, photoluminescence) and electrical (space charge distribution, photo-stimulated discharge) behavior. Photo-stimulated currents are associated with optical absorption of the material leading to space charge dissipation as demonstrated by space charge distribution measurement. Based on this set of experimental results and quantum chemical calculation performed on PEN macromolecular system, we propose a new scheme for the electronic levels of PEN. This scheme allows understanding the mechanisms at play in photo-stimulated discharge. One of the main conclusions of our work is that photo-stimulated current measurements do not probe the energy level of traps. Detrapping of charges results from a two-step process where the photon energy is absorbed by chromophores that restitute a part of this energy to trapped charges through various mechanisms. Moreover, the new scheme allows discussing the components of the luminescence excited under different stresses, being electric field, electronic and UV irradiation, charge recombination and thermal activation.

show abstract

“…A RC filter is used to shield and condition the input signal. On the LIMM side [8], a 100 mW 660 nm modulated laser diode is used in the frequency range from 10 Hz to 10 kHz. The back electrode is connected to the switch which, in LIMM mode, connects the electrical protection circuit, the current preamplifier and the lock-in synchronous amplifier.…”

Section: A Coupled Measuring Benchmentioning

confidence: 99%

Study of Trapping Process in BOPP by Coupled Space Charge and Photo-stimulated Discharge Techniques

Mendoza-Lopez

Teyssedre

Berquez

et al. 2022

2022 IEEE 4th International Conference on Dielectrics (ICD)

View full text Add to dashboard Cite

The global market of biaxially oriented polypropylene (BOPP) film capacitors is growing constantly, as part of energy transition needs. The formation of physical or chemical defects in BOPP can lead to insulator failure due to charge build-up. It is therefore necessary to determine the amount and location of charges and to evaluate the trap energy depths to better understand conduction and aging phenomena. A test bench allowing to do combined space charge measurements by the laser intensity modulation method (LIMM) and optically excited current acquisitions by the photo-stimulated discharge method (PSD) is used to monitor charge accumulation, trap population and de-trapping scenarios. In this investigation, homocharge enhancement near the probed electrode is evidenced in a blank sample. Under light exposure for PSD measurements, charge detrapping or reactions of BOPP additives modify the charging process.

show abstract

Thermal modeling and calibration in (F)LIMM using an external bias field: Theory and experiment

Cited by 11 publications

References 9 publications

Behavior of Space Charge in Polyimide and the Influence on Power Semiconductor Device Reliability

Behavior of Space Charge in Polyimide and the Influence on Power Semiconductor Device Reliability

Electronic properties of polyethylene naphthalate as derived from photo-stimulated discharge, luminescence experiments and quantum chemical calculation

Study of Trapping Process in BOPP by Coupled Space Charge and Photo-stimulated Discharge Techniques

Contact Info

Product

Resources

About