Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer

Kaia Ernits; Christian Neubauer; Xianglin Li; Lydia H. Wong; Dieter Meissner; Axel Neisser

doi:10.1109/PVSC.2015.7356187

Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer

Kaia Ernits, Christian Neubauer, Xianglin Li, Lydia H. Wong, Dieter Meissner, Axel Neisser

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

To verify the positive effect of thin tin oxide layer on the surface of CZTS to solar cell VOC, a thin layer of SnOx was deposited onto the CZTS mono grains by ALD. For confirmation of the effect, the SnOx layer was tested in combination with two different buffer materials - CBD CdS and ZnO,S. The depositon of a SnOx inter-layer resulted in increased VOC of CZTS/CdS solar cell from 666 mV to 724 mV and CZTS/ZnO,S solar cell from 617 mV to 719 mV. The tin oxide layer did not affect the FF and jSC values, so the improvement in VOC led to a direct improvement in CZTS/CdS solar cell PCE. EQE measurements did not show any shift in material absorption edge/band gap, hence the VOC increase can be fully attributed to the interface improvements, like to a reduced interface recombination rate. Apparently the additional SnOx layer seems to allow for better collection of the carriers at longer wavelength region (650 nm - 750 nm).

Original language	English
Title of host publication	2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479979448
DOIs	https://doi.org/10.1109/PVSC.2015.7356187
Publication status	Published - Dec 14 2015
Externally published	Yes
Event	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States Duration: Jun 14 2015 → Jun 19 2015

Publication series

Name	2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

Conference

Conference	42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
Country/Territory	United States
City	New Orleans
Period	6/14/15 → 6/19/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

ASJC Scopus Subject Areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Keywords

charge carrier barrier
CZTS
kesterite
mono grain layer solar cell
open circuit voltage
tin oxide

Access to Document

10.1109/PVSC.2015.7356187

Cite this

Ernits, K., Neubauer, C., Li, X., Wong, L. H., Meissner, D., & Neisser, A. (2015). Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer. In 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015 Article 7356187 (2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PVSC.2015.7356187

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title = "Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer",

abstract = "To verify the positive effect of thin tin oxide layer on the surface of CZTS to solar cell VOC, a thin layer of SnOx was deposited onto the CZTS mono grains by ALD. For confirmation of the effect, the SnOx layer was tested in combination with two different buffer materials - CBD CdS and ZnO,S. The depositon of a SnOx inter-layer resulted in increased VOC of CZTS/CdS solar cell from 666 mV to 724 mV and CZTS/ZnO,S solar cell from 617 mV to 719 mV. The tin oxide layer did not affect the FF and jSC values, so the improvement in VOC led to a direct improvement in CZTS/CdS solar cell PCE. EQE measurements did not show any shift in material absorption edge/band gap, hence the VOC increase can be fully attributed to the interface improvements, like to a reduced interface recombination rate. Apparently the additional SnOx layer seems to allow for better collection of the carriers at longer wavelength region (650 nm - 750 nm).",

keywords = "charge carrier barrier, CZTS, kesterite, mono grain layer solar cell, open circuit voltage, tin oxide",

author = "Kaia Ernits and Christian Neubauer and Xianglin Li and Wong, {Lydia H.} and Dieter Meissner and Axel Neisser",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 ; Conference date: 14-06-2015 Through 19-06-2015",

year = "2015",

month = dec,

day = "14",

doi = "10.1109/PVSC.2015.7356187",

language = "English",

series = "2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015",

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}

Ernits, K, Neubauer, C, Li, X, Wong, LH, Meissner, D & Neisser, A 2015, Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer. in 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015., 7356187, 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015, Institute of Electrical and Electronics Engineers Inc., 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015, New Orleans, United States, 6/14/15. https://doi.org/10.1109/PVSC.2015.7356187

Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer. / Ernits, Kaia; Neubauer, Christian; Li, Xianglin et al.
2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7356187 (2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer

AU - Ernits, Kaia

AU - Neubauer, Christian

AU - Li, Xianglin

AU - Wong, Lydia H.

AU - Meissner, Dieter

AU - Neisser, Axel

PY - 2015/12/14

Y1 - 2015/12/14

N2 - To verify the positive effect of thin tin oxide layer on the surface of CZTS to solar cell VOC, a thin layer of SnOx was deposited onto the CZTS mono grains by ALD. For confirmation of the effect, the SnOx layer was tested in combination with two different buffer materials - CBD CdS and ZnO,S. The depositon of a SnOx inter-layer resulted in increased VOC of CZTS/CdS solar cell from 666 mV to 724 mV and CZTS/ZnO,S solar cell from 617 mV to 719 mV. The tin oxide layer did not affect the FF and jSC values, so the improvement in VOC led to a direct improvement in CZTS/CdS solar cell PCE. EQE measurements did not show any shift in material absorption edge/band gap, hence the VOC increase can be fully attributed to the interface improvements, like to a reduced interface recombination rate. Apparently the additional SnOx layer seems to allow for better collection of the carriers at longer wavelength region (650 nm - 750 nm).

AB - To verify the positive effect of thin tin oxide layer on the surface of CZTS to solar cell VOC, a thin layer of SnOx was deposited onto the CZTS mono grains by ALD. For confirmation of the effect, the SnOx layer was tested in combination with two different buffer materials - CBD CdS and ZnO,S. The depositon of a SnOx inter-layer resulted in increased VOC of CZTS/CdS solar cell from 666 mV to 724 mV and CZTS/ZnO,S solar cell from 617 mV to 719 mV. The tin oxide layer did not affect the FF and jSC values, so the improvement in VOC led to a direct improvement in CZTS/CdS solar cell PCE. EQE measurements did not show any shift in material absorption edge/band gap, hence the VOC increase can be fully attributed to the interface improvements, like to a reduced interface recombination rate. Apparently the additional SnOx layer seems to allow for better collection of the carriers at longer wavelength region (650 nm - 750 nm).

KW - charge carrier barrier

KW - CZTS

KW - kesterite

KW - mono grain layer solar cell

KW - open circuit voltage

KW - tin oxide

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M3 - Conference contribution

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T3 - 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

BT - 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 42nd IEEE Photovoltaic Specialist Conference, PVSC 2015

Y2 - 14 June 2015 through 19 June 2015

ER -

Ernits K, Neubauer C, Li X, Wong LH, Meissner D, Neisser A. Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer. In 2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7356187. (2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015). doi: 10.1109/PVSC.2015.7356187

Improvement of VOC in Cu2ZnSnS4 monograin layer solar cells with tin oxide inter-layer

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Keywords

Access to Document

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Cite this