Spectroscopic, Scanning Laser OBIC, and I-V/QE Characterizations of Browned EVA Solar Cells

F. J. Pern; I. L. Eisgruber; R. H. Micheels

doi:10.1109/PVSC.1996.564360

Spectroscopic, Scanning Laser OBIC, and I-V/QE Characterizations of Browned EVA Solar Cells

F. J. Pern, I. L. Eisgruber, R. H. Micheels

Materials, Chemical, and Computational Science

National Renewable Energy Laboratory

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

8 Scopus Citations

Abstract

The effects of ethylene-vinyl acetate (EVA) discoloration due to accelerated field or laboratory exposure on the encapsulated silicon (Si) solar cells or EVA/glass laminates were characterized quantitatively by using non-invasive, non-destructive ultraviolet-visible (UV-vis) spectrophotometry, spectrocolorimetry, spectrofluorometry, scanning laser OBIC (optical beam induced current) spectroscopy, and current-voltage (I-V) and quantum efficiency (QE) measurements. The results show that the yellowness index (YI) measured directly over the AR-coated solar cells under the glass superstrate increased from the range of -80 to -90 to the range of -20 to 15 as the EVA changed from clear to brown. The ratio of two fluorescence emission peak areas generally increased from 1.45 to 5.69 as browning increased, but dropped to 4.21 on a darker EVA.

Original language	American English
Pages	1255-1258
Number of pages	4
DOIs	https://doi.org/10.1109/PVSC.1996.564360 https://doi.org/10.1109/pvsc.1996.564360
State	Published - 1996
Event	Twenty Fifth IEEE Photovoltaic Specialists Conference - Washington, D.C. Duration: 13 May 1996 → 17 May 1996

Conference

Conference	Twenty Fifth IEEE Photovoltaic Specialists Conference
City	Washington, D.C.
Period	13/05/96 → 17/05/96

NREL Publication Number

NREL/CP-22520

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Cite this

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title = "Spectroscopic, Scanning Laser OBIC, and I-V/QE Characterizations of Browned EVA Solar Cells",

abstract = "The effects of ethylene-vinyl acetate (EVA) discoloration due to accelerated field or laboratory exposure on the encapsulated silicon (Si) solar cells or EVA/glass laminates were characterized quantitatively by using non-invasive, non-destructive ultraviolet-visible (UV-vis) spectrophotometry, spectrocolorimetry, spectrofluorometry, scanning laser OBIC (optical beam induced current) spectroscopy, and current-voltage (I-V) and quantum efficiency (QE) measurements. The results show that the yellowness index (YI) measured directly over the AR-coated solar cells under the glass superstrate increased from the range of -80 to -90 to the range of -20 to 15 as the EVA changed from clear to brown. The ratio of two fluorescence emission peak areas generally increased from 1.45 to 5.69 as browning increased, but dropped to 4.21 on a darker EVA.",

author = "Pern, {F. J.} and Eisgruber, {I. L.} and Micheels, {R. H.}",

year = "1996",

doi = "10.1109/PVSC.1996.564360",

language = "American English",

pages = "1255--1258",

note = "Twenty Fifth IEEE Photovoltaic Specialists Conference ; Conference date: 13-05-1996 Through 17-05-1996",

}

TY - CONF

T1 - Spectroscopic, Scanning Laser OBIC, and I-V/QE Characterizations of Browned EVA Solar Cells

AU - Pern, F. J.

AU - Eisgruber, I. L.

AU - Micheels, R. H.

PY - 1996

Y1 - 1996

N2 - The effects of ethylene-vinyl acetate (EVA) discoloration due to accelerated field or laboratory exposure on the encapsulated silicon (Si) solar cells or EVA/glass laminates were characterized quantitatively by using non-invasive, non-destructive ultraviolet-visible (UV-vis) spectrophotometry, spectrocolorimetry, spectrofluorometry, scanning laser OBIC (optical beam induced current) spectroscopy, and current-voltage (I-V) and quantum efficiency (QE) measurements. The results show that the yellowness index (YI) measured directly over the AR-coated solar cells under the glass superstrate increased from the range of -80 to -90 to the range of -20 to 15 as the EVA changed from clear to brown. The ratio of two fluorescence emission peak areas generally increased from 1.45 to 5.69 as browning increased, but dropped to 4.21 on a darker EVA.

AB - The effects of ethylene-vinyl acetate (EVA) discoloration due to accelerated field or laboratory exposure on the encapsulated silicon (Si) solar cells or EVA/glass laminates were characterized quantitatively by using non-invasive, non-destructive ultraviolet-visible (UV-vis) spectrophotometry, spectrocolorimetry, spectrofluorometry, scanning laser OBIC (optical beam induced current) spectroscopy, and current-voltage (I-V) and quantum efficiency (QE) measurements. The results show that the yellowness index (YI) measured directly over the AR-coated solar cells under the glass superstrate increased from the range of -80 to -90 to the range of -20 to 15 as the EVA changed from clear to brown. The ratio of two fluorescence emission peak areas generally increased from 1.45 to 5.69 as browning increased, but dropped to 4.21 on a darker EVA.

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U2 - 10.1109/PVSC.1996.564360

DO - 10.1109/PVSC.1996.564360

M3 - Paper

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T2 - Twenty Fifth IEEE Photovoltaic Specialists Conference

Y2 - 13 May 1996 through 17 May 1996

ER -

Spectroscopic, Scanning Laser OBIC, and I-V/QE Characterizations of Browned EVA Solar Cells

Abstract

Conference

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