Ultraviolet Fluorescence Bleaching Rates for New Cell Cracks

William Hobbs; Steve Johnston; Braden Gilleland

doi:10.1109/PVSC45281.2020.9300580

Ultraviolet Fluorescence Bleaching Rates for New Cell Cracks

William Hobbs, Steve Johnston, Braden Gilleland

Materials Science

Southern Company

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

5 Scopus Citations

Abstract

Ultraviolet Fluorescence (UVF) is an inspection tool that can be used to identify cell cracks in some photovoltaic (PV) modules. Cell cracks can also be identified with electroluminescence (EL) and similar techniques, but it is generally not possible to differentiate new cracks from old ones with EL. UVF has a unique property of taking time for the cracks to show up, which could be used to differentiate new cracks (e.g., from a recent storm) from old ones (e.g., from installation damage). We perform tests on several different modules, some the same make and model but with different bill of materials (BOMs), to characterize the amount of time that it takes for crack signatures to progress in UVF.

Original language	American English
Pages	2350-2355
Number of pages	6
DOIs	https://doi.org/10.1109/PVSC45281.2020.9300580 https://doi.org/10.1109/PVSC45281.2020.9300580
State	Published - 14 Jun 2020
Event	47th IEEE Photovoltaic Specialists Conference, PVSC 2020 - Calgary, Canada Duration: 15 Jun 2020 → 21 Aug 2020

Conference

Conference	47th IEEE Photovoltaic Specialists Conference, PVSC 2020
Country/Territory	Canada
City	Calgary
Period	15/06/20 → 21/08/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

NREL Publication Number

NREL/CP-5K00-76751

Keywords

cell cracks
PV Inspection
storm damage
ultraviolet fluorescence
UVF

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title = "Ultraviolet Fluorescence Bleaching Rates for New Cell Cracks",

abstract = "Ultraviolet Fluorescence (UVF) is an inspection tool that can be used to identify cell cracks in some photovoltaic (PV) modules. Cell cracks can also be identified with electroluminescence (EL) and similar techniques, but it is generally not possible to differentiate new cracks from old ones with EL. UVF has a unique property of taking time for the cracks to show up, which could be used to differentiate new cracks (e.g., from a recent storm) from old ones (e.g., from installation damage). We perform tests on several different modules, some the same make and model but with different bill of materials (BOMs), to characterize the amount of time that it takes for crack signatures to progress in UVF.",

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year = "2020",

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doi = "10.1109/PVSC45281.2020.9300580",

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TY - CONF

T1 - Ultraviolet Fluorescence Bleaching Rates for New Cell Cracks

AU - Hobbs, William

AU - Johnston, Steve

AU - Gilleland, Braden

PY - 2020/6/14

Y1 - 2020/6/14

N2 - Ultraviolet Fluorescence (UVF) is an inspection tool that can be used to identify cell cracks in some photovoltaic (PV) modules. Cell cracks can also be identified with electroluminescence (EL) and similar techniques, but it is generally not possible to differentiate new cracks from old ones with EL. UVF has a unique property of taking time for the cracks to show up, which could be used to differentiate new cracks (e.g., from a recent storm) from old ones (e.g., from installation damage). We perform tests on several different modules, some the same make and model but with different bill of materials (BOMs), to characterize the amount of time that it takes for crack signatures to progress in UVF.

AB - Ultraviolet Fluorescence (UVF) is an inspection tool that can be used to identify cell cracks in some photovoltaic (PV) modules. Cell cracks can also be identified with electroluminescence (EL) and similar techniques, but it is generally not possible to differentiate new cracks from old ones with EL. UVF has a unique property of taking time for the cracks to show up, which could be used to differentiate new cracks (e.g., from a recent storm) from old ones (e.g., from installation damage). We perform tests on several different modules, some the same make and model but with different bill of materials (BOMs), to characterize the amount of time that it takes for crack signatures to progress in UVF.

KW - cell cracks

KW - PV Inspection

KW - storm damage

KW - ultraviolet fluorescence

KW - UVF

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U2 - 10.1109/PVSC45281.2020.9300580

DO - 10.1109/PVSC45281.2020.9300580

M3 - Paper

AN - SCOPUS:85099571601

SP - 2350

EP - 2355

T2 - 47th IEEE Photovoltaic Specialists Conference, PVSC 2020

Y2 - 15 June 2020 through 21 August 2020

ER -

Ultraviolet Fluorescence Bleaching Rates for New Cell Cracks

Abstract

Conference

Bibliographical note

NREL Publication Number

Keywords

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