Photostimulated discharge of corona and electron-beam charged electret polymers

A. Mellinger; F. Camacho Gonzalez; R. Gerhard-Multhaupt; L. F. Santos; R. M. Faria

Photostimulated discharge of corona and electron-beam charged electret polymers

A. Mellinger, F. Camacho Gonzalez, R. Gerhard-Multhaupt, L. F. Santos, R. M. Faria

Physics

Research output: Contribution to conference › Paper › peer-review

7 Scopus citations

Abstract

Despite the long-time use of space-charge electrets in various commercial applications, the mechanism of charge storage is still poorly understood. To study the energy distribution of deep traps, photostimulated discharge spectra of electron-beam and corona-charged polytetrafluoroethylene (PTFE), polyethylene terephthalate (PETP) and cellular polypropylene (PP) films were recorded for wavelengths between 200 and 400 nm. In addition, space-charge profiles were measured using the piezoelectrically generated pressure-step (PPS) method in order to monitor the detrapping process. Strong discharge currents of up to 15 pA/cm² were found in PETP around the UV absorption edge near 310 nm. Initial results show a quantitative depopulation of near-surface charges, whereas only partial detrapping could be achieved for bulk charges. Three distinct trapping levels could be identified in PP films.

Original language	English
Pages	7-10
Number of pages	4
State	Published - 2002
Event	11th International Symposium on Electrets - Melbourne, VIC., Australia Duration: Oct 1 2002 → Oct 3 2002

Conference

Conference	11th International Symposium on Electrets
Country/Territory	Australia
City	Melbourne, VIC.
Period	10/1/02 → 10/3/02

Cite this

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title = "Photostimulated discharge of corona and electron-beam charged electret polymers",

abstract = "Despite the long-time use of space-charge electrets in various commercial applications, the mechanism of charge storage is still poorly understood. To study the energy distribution of deep traps, photostimulated discharge spectra of electron-beam and corona-charged polytetrafluoroethylene (PTFE), polyethylene terephthalate (PETP) and cellular polypropylene (PP) films were recorded for wavelengths between 200 and 400 nm. In addition, space-charge profiles were measured using the piezoelectrically generated pressure-step (PPS) method in order to monitor the detrapping process. Strong discharge currents of up to 15 pA/cm2 were found in PETP around the UV absorption edge near 310 nm. Initial results show a quantitative depopulation of near-surface charges, whereas only partial detrapping could be achieved for bulk charges. Three distinct trapping levels could be identified in PP films.",

author = "A. Mellinger and Gonzalez, {F. Camacho} and R. Gerhard-Multhaupt and Santos, {L. F.} and Faria, {R. M.}",

year = "2002",

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pages = "7--10",

note = "null ; Conference date: 01-10-2002 Through 03-10-2002",

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TY - CONF

T1 - Photostimulated discharge of corona and electron-beam charged electret polymers

AU - Mellinger, A.

AU - Gonzalez, F. Camacho

AU - Gerhard-Multhaupt, R.

AU - Santos, L. F.

AU - Faria, R. M.

PY - 2002

Y1 - 2002

N2 - Despite the long-time use of space-charge electrets in various commercial applications, the mechanism of charge storage is still poorly understood. To study the energy distribution of deep traps, photostimulated discharge spectra of electron-beam and corona-charged polytetrafluoroethylene (PTFE), polyethylene terephthalate (PETP) and cellular polypropylene (PP) films were recorded for wavelengths between 200 and 400 nm. In addition, space-charge profiles were measured using the piezoelectrically generated pressure-step (PPS) method in order to monitor the detrapping process. Strong discharge currents of up to 15 pA/cm2 were found in PETP around the UV absorption edge near 310 nm. Initial results show a quantitative depopulation of near-surface charges, whereas only partial detrapping could be achieved for bulk charges. Three distinct trapping levels could be identified in PP films.

AB - Despite the long-time use of space-charge electrets in various commercial applications, the mechanism of charge storage is still poorly understood. To study the energy distribution of deep traps, photostimulated discharge spectra of electron-beam and corona-charged polytetrafluoroethylene (PTFE), polyethylene terephthalate (PETP) and cellular polypropylene (PP) films were recorded for wavelengths between 200 and 400 nm. In addition, space-charge profiles were measured using the piezoelectrically generated pressure-step (PPS) method in order to monitor the detrapping process. Strong discharge currents of up to 15 pA/cm2 were found in PETP around the UV absorption edge near 310 nm. Initial results show a quantitative depopulation of near-surface charges, whereas only partial detrapping could be achieved for bulk charges. Three distinct trapping levels could be identified in PP films.

UR - http://www.scopus.com/inward/record.url?scp=0036949066&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0036949066

SP - 7

EP - 10

Y2 - 1 October 2002 through 3 October 2002

ER -

Photostimulated discharge of corona and electron-beam charged electret polymers

Abstract

Conference

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