Enhanced Performance in Cu(In,Ga)Se2 Solar Cells Fabricated by the Two-Step Selenization Process with a Potassium Fluoride Postdeposition Treatment

Lorelle Mansfield; Christopher Muzzillo; Clay DeHart; Bobby To; Joel Pankow; Kannan Ramanathan; Robert Reedy Jr.; Rommel Noufi; Karen Bowers

doi:10.1109/JPHOTOV.2014.2354259

Enhanced Performance in Cu(In,Ga)Se2 Solar Cells Fabricated by the Two-Step Selenization Process with a Potassium Fluoride Postdeposition Treatment

Lorelle Mansfield, Christopher Muzzillo, Clay DeHart, Bobby To, Joel Pankow, Kannan Ramanathan, Robert Reedy Jr., Rommel Noufi, Karen Bowers

Materials Science

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

55 Scopus Citations

Abstract

Cu(In,Ga)Se₂ (CIGS) solar cells fabricated with two-step selenization processes commonly suffer from low open-circuit voltage (V_oc). We found that the V_oc of solar cells made from selenized Cu/Ga/In stacked metal precursors can be increased by employing a potassium fluoride (KF) postdeposition treatment (PDT). This study presents a comparison of films and resulting devices with and without the KF PDT. By including the KF PDT, an 18.6%-efficient CIGS device with a V_oc of 0.709 V was fabricated using a two-step selenization process.

Original language	American English
Article number	6901217
Pages (from-to)	1650-1654
Number of pages	5
Journal	IEEE Journal of Photovoltaics
Volume	4
Issue number	6
DOIs	https://doi.org/10.1109/JPHOTOV.2014.2354259 https://doi.org/10.1109/JPHOTOV.2014.2354259
State	Published - 2014

Bibliographical note

Publisher Copyright:
© 2014 IEEE.

NREL Publication Number

NREL/JA-5K00-61188

Keywords

Copper compounds
Cu(In, Ga)Se2
current-voltage characteristics
photovoltaic cells
potassium fluoride postdeposition treatment
thin films

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Mansfield, L., Muzzillo, C., DeHart, C., To, B., Pankow, J., Ramanathan, K., Reedy Jr., R., Noufi, R., & Bowers, K. (2014). Enhanced Performance in Cu(In,Ga)Se2 Solar Cells Fabricated by the Two-Step Selenization Process with a Potassium Fluoride Postdeposition Treatment. IEEE Journal of Photovoltaics, 4(6), 1650-1654. Article 6901217. https://doi.org/10.1109/JPHOTOV.2014.2354259, https://doi.org/10.1109/JPHOTOV.2014.2354259

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title = "Enhanced Performance in Cu(In,Ga)Se2 Solar Cells Fabricated by the Two-Step Selenization Process with a Potassium Fluoride Postdeposition Treatment",

abstract = "Cu(In,Ga)Se2 (CIGS) solar cells fabricated with two-step selenization processes commonly suffer from low open-circuit voltage (Voc). We found that the Voc of solar cells made from selenized Cu/Ga/In stacked metal precursors can be increased by employing a potassium fluoride (KF) postdeposition treatment (PDT). This study presents a comparison of films and resulting devices with and without the KF PDT. By including the KF PDT, an 18.6%-efficient CIGS device with a Voc of 0.709 V was fabricated using a two-step selenization process.",

keywords = "Copper compounds, Cu(In, Ga)Se2, current-voltage characteristics, photovoltaic cells, potassium fluoride postdeposition treatment, thin films",

author = "Lorelle Mansfield and Christopher Muzzillo and Clay DeHart and Bobby To and Joel Pankow and Kannan Ramanathan and {Reedy Jr.}, Robert and Rommel Noufi and Karen Bowers",

note = "Publisher Copyright: {\textcopyright} 2014 IEEE.",

year = "2014",

doi = "10.1109/JPHOTOV.2014.2354259",

language = "American English",

volume = "4",

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Mansfield, L , Muzzillo, C, DeHart, C, To, B, Pankow, J, Ramanathan, K, Reedy Jr., R, Noufi, R & Bowers, K 2014, 'Enhanced Performance in Cu(In,Ga)Se2 Solar Cells Fabricated by the Two-Step Selenization Process with a Potassium Fluoride Postdeposition Treatment', IEEE Journal of Photovoltaics, vol. 4, no. 6, 6901217, pp. 1650-1654. https://doi.org/10.1109/JPHOTOV.2014.2354259, https://doi.org/10.1109/JPHOTOV.2014.2354259

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AU - Mansfield, Lorelle

AU - Muzzillo, Christopher

AU - DeHart, Clay

AU - To, Bobby

AU - Pankow, Joel

AU - Ramanathan, Kannan

AU - Reedy Jr., Robert

AU - Noufi, Rommel

AU - Bowers, Karen

PY - 2014

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AB - Cu(In,Ga)Se2 (CIGS) solar cells fabricated with two-step selenization processes commonly suffer from low open-circuit voltage (Voc). We found that the Voc of solar cells made from selenized Cu/Ga/In stacked metal precursors can be increased by employing a potassium fluoride (KF) postdeposition treatment (PDT). This study presents a comparison of films and resulting devices with and without the KF PDT. By including the KF PDT, an 18.6%-efficient CIGS device with a Voc of 0.709 V was fabricated using a two-step selenization process.

KW - Copper compounds

KW - Cu(In, Ga)Se2

KW - current-voltage characteristics

KW - photovoltaic cells

KW - potassium fluoride postdeposition treatment

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Enhanced Performance in Cu(In,Ga)Se2 Solar Cells Fabricated by the Two-Step Selenization Process with a Potassium Fluoride Postdeposition Treatment

Abstract

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Keywords

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