Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy

Soeren Jensen; Patricia Dippo; Lorelle Mansfield; Stephen Glynn; Darius Kuciauskas; Patricia Dippo

doi:10.1109/PVSC.2016.7750333

Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy

Soeren Jensen
, Patricia Dippo
, Lorelle Mansfield
, Stephen Glynn
, Darius Kuciauskas
, Patricia Dippo

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

Abstract

We use two-wavelength excitation photoluminescence spectroscopy to probe defect states in CIGS thin films. Above-E_g excitation is combined with a tunable IR bias light that modulates the population of the defect states. We find that IR illumination in the range of 1400-2000 nm (0.62-0.89 eV) causes a reduction of the PL intensity, the magnitude of which scales linearly with IR power. Further, KF post deposition treatment has only a modest influence on the effect of the IR excitation. Initial data suggest that we have developed an optical characterization tool for band-gap defect states.

Original language	American English
Pages	3556-3558
Number of pages	3
DOIs	https://doi.org/10.1109/PVSC.2016.7750333 https://doi.org/10.1109/PVSC.2016.7750333
State	Published - 18 Nov 2016
Event	43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 - Portland, United States Duration: 5 Jun 2016 → 10 Jun 2016

Conference

Conference	43rd IEEE Photovoltaic Specialists Conference, PVSC 2016
Country/Territory	United States
City	Portland
Period	5/06/16 → 10/06/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

NLR Publication Number

NREL/CP-5900-65730

Keywords

CIGS
defects
PL spectroscopy
post deposition treatment
SRH recombination

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Jensen, S., Dippo, P., Mansfield, L., Glynn, S., Kuciauskas, D., & Dippo, P. (2016). Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy. 3556-3558. Paper presented at 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016, Portland, United States. https://doi.org/10.1109/PVSC.2016.7750333, https://doi.org/10.1109/PVSC.2016.7750333

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title = "Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy",

abstract = "We use two-wavelength excitation photoluminescence spectroscopy to probe defect states in CIGS thin films. Above-Eg excitation is combined with a tunable IR bias light that modulates the population of the defect states. We find that IR illumination in the range of 1400-2000 nm (0.62-0.89 eV) causes a reduction of the PL intensity, the magnitude of which scales linearly with IR power. Further, KF post deposition treatment has only a modest influence on the effect of the IR excitation. Initial data suggest that we have developed an optical characterization tool for band-gap defect states.",

keywords = "CIGS, defects, PL spectroscopy, post deposition treatment, SRH recombination",

author = "Soeren Jensen and Patricia Dippo and Lorelle Mansfield and Stephen Glynn and Darius Kuciauskas and Patricia Dippo",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016 ; Conference date: 05-06-2016 Through 10-06-2016",

year = "2016",

month = nov,

day = "18",

doi = "10.1109/PVSC.2016.7750333",

language = "American English",

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Jensen, S, Dippo, P, Mansfield, L , Glynn, S, Kuciauskas, D & Dippo, P 2016, 'Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy', Paper presented at 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016, Portland, United States, 5/06/16 - 10/06/16 pp. 3556-3558. https://doi.org/10.1109/PVSC.2016.7750333, https://doi.org/10.1109/PVSC.2016.7750333

Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy. / Jensen, Soeren; Dippo, Patricia; Mansfield, Lorelle et al.
2016. 3556-3558 Paper presented at 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016, Portland, United States.

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

TY - CONF

T1 - Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy

AU - Jensen, Soeren

AU - Dippo, Patricia

AU - Mansfield, Lorelle

AU - Glynn, Stephen

AU - Kuciauskas, Darius

AU - Dippo, Patricia

PY - 2016/11/18

Y1 - 2016/11/18

N2 - We use two-wavelength excitation photoluminescence spectroscopy to probe defect states in CIGS thin films. Above-Eg excitation is combined with a tunable IR bias light that modulates the population of the defect states. We find that IR illumination in the range of 1400-2000 nm (0.62-0.89 eV) causes a reduction of the PL intensity, the magnitude of which scales linearly with IR power. Further, KF post deposition treatment has only a modest influence on the effect of the IR excitation. Initial data suggest that we have developed an optical characterization tool for band-gap defect states.

AB - We use two-wavelength excitation photoluminescence spectroscopy to probe defect states in CIGS thin films. Above-Eg excitation is combined with a tunable IR bias light that modulates the population of the defect states. We find that IR illumination in the range of 1400-2000 nm (0.62-0.89 eV) causes a reduction of the PL intensity, the magnitude of which scales linearly with IR power. Further, KF post deposition treatment has only a modest influence on the effect of the IR excitation. Initial data suggest that we have developed an optical characterization tool for band-gap defect states.

KW - CIGS

KW - defects

KW - PL spectroscopy

KW - post deposition treatment

KW - SRH recombination

UR - https://www.scopus.com/pages/publications/85003587695

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DO - 10.1109/PVSC.2016.7750333

M3 - Paper

AN - SCOPUS:85003587695

SP - 3556

EP - 3558

T2 - 43rd IEEE Photovoltaic Specialists Conference, PVSC 2016

Y2 - 5 June 2016 through 10 June 2016

ER -

Defect States in Copper Indium Gallium Selenide Solar Cells from Two-Wavelength Excitation Photoluminescence Spectroscopy

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Keywords

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