Title:
HIGHLY PURIFIED TIN-CONTAINING PEROVSKITE SEMICONDUCTOR MATERIAL
Document Type and Number:
WIPO Patent Application WO/2021/182431
Kind Code:
A1
Abstract:
[Problem] To provide a tin-containing perovskite layer that is highly purified by removing Sn4+, which is slightly present in the system, and has good photoelectric conversion, while being not susceptible to oxidation of Sn2+ into Sn4+. [Solution] A tin-containing perovskite layer wherein the value of Sn4+
40 nm, which is the percentage of the tetravalent tin atom content in the sum of the tetravalent tin atom content and the divalent tin atom content in a second measurement region that is at the depth of 40 nm in a surface center part of the tin-containing perovskite layer, is from 0% to 0.5%.
Inventors:
WAKAMIYA ATSUSHI (JP)
NAKAMURA TOMOYA (JP)
NAKAMURA TOMOYA (JP)
Application Number:
PCT/JP2021/009134
Publication Date:
September 16, 2021
Filing Date:
March 09, 2021
Export Citation:
Assignee:
UNIV KYOTO (JP)
International Classes:
H01L51/44
Foreign References:
| JP2015535390A | 2015-12-10 | |||
| US20150295194A1 | 2015-10-15 | |||
| US20170053746A1 | 2017-02-23 |
Other References:
LEE, S. J. ET AL.: "Fabrication of efficient formamidinium tin iodide perovskite solar cells through SnF2-pyrazine complex", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 138, 9 March 2016 (2016-03-09), pages 3974 - 3977, XP055829035, Retrieved from the Internet DOI: 10.1021/jacs.6b00142
LIN, R. X. ET AL.: "Monolithic all-perovskite tandem solar cells with 24.8% efficiency exploiting comproportionation to suppress Sn (II) oxidation in precursor ink", NATURE ENERGY, vol. 4, 2019, pages 864 - 873, XP036904147, DOI: 10.1038/s41560-019-0466-3
JIANG TINGMING, CHEN ZENG, CHEN XU, LIU TIANYU, CHEN XINYA, SHA WEI E. I., ZHU HAIMING, YANG YANG (MICHAEL): "Realizing High Efficiency over 20% of Low‐Bandgap Pb–Sn‐Alloyed Perovskite Solar Cells by In Situ Reduction of Sn 4+", SOLAR RRL, vol. 4, no. 3, 1 March 2020 (2020-03-01), pages 1900467, XP055856715, ISSN: 2367-198X, DOI: 10.1002/solr.201900467
WEISS, M. ET AL.: "Preparation and characterization of methylammonium tin iodide layers as photovoltaic absorbers", PHYSICA STATUS SOLIDI A, vol. 213, no. 4, April 2016 (2016-04-01), pages 975 - 981, XP055856717
XU, X. B. ET AL.: "Ascorbic acid as an effective antioxidant additive to enhance the efficiency and stability of Pb/Sn-based binary perovskite solar cells", NANO ENERGY, vol. 34, 2017, pages 392 - 398, XP055713387, DOI: 10.1016/j.nanoen.2017.02.040
KAMARUDIN, M. A. ET AL.: "Suppression of charge carrier recombination in lead-free tin halide perovskite via lewis base post-treatment", THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS, vol. 10, no. 17, 5 September 2019 (2019-09-05), pages 5277 - 5283, XP055856714
LIN, R. X. ET AL.: "Monolithic all-perovskite tandem solar cells with 24.8% efficiency exploiting comproportionation to suppress Sn (II) oxidation in precursor ink", NATURE ENERGY, vol. 4, 2019, pages 864 - 873, XP036904147, DOI: 10.1038/s41560-019-0466-3
JIANG TINGMING, CHEN ZENG, CHEN XU, LIU TIANYU, CHEN XINYA, SHA WEI E. I., ZHU HAIMING, YANG YANG (MICHAEL): "Realizing High Efficiency over 20% of Low‐Bandgap Pb–Sn‐Alloyed Perovskite Solar Cells by In Situ Reduction of Sn 4+", SOLAR RRL, vol. 4, no. 3, 1 March 2020 (2020-03-01), pages 1900467, XP055856715, ISSN: 2367-198X, DOI: 10.1002/solr.201900467
WEISS, M. ET AL.: "Preparation and characterization of methylammonium tin iodide layers as photovoltaic absorbers", PHYSICA STATUS SOLIDI A, vol. 213, no. 4, April 2016 (2016-04-01), pages 975 - 981, XP055856717
XU, X. B. ET AL.: "Ascorbic acid as an effective antioxidant additive to enhance the efficiency and stability of Pb/Sn-based binary perovskite solar cells", NANO ENERGY, vol. 34, 2017, pages 392 - 398, XP055713387, DOI: 10.1016/j.nanoen.2017.02.040
KAMARUDIN, M. A. ET AL.: "Suppression of charge carrier recombination in lead-free tin halide perovskite via lewis base post-treatment", THE JOURNAL OF PHYSICAL CHEMISTRY LETTERS, vol. 10, no. 17, 5 September 2019 (2019-09-05), pages 5277 - 5283, XP055856714
Attorney, Agent or Firm:
HIROSE Takayuki (JP)
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