Journal of Physical Chemistry C

, volume 121 , issue 36 , pages 19650-19656

Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH₃NH₃)SnI₃ and HC(NH₂)₂SnI₃ Perovskites upon Air Exposure

Ryosuke Nishikubo ¹

Naoki Ishida ¹

Yukie Katsuki ²

Atsushi Wakamiya ²

Akinori Saeki ^{1, 3}

Hide authors affiliations Show authors affiliations: 3 affiliations

Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan |

Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan |

Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan |

Publication type: Journal Article

Publication date: 2017-09-06

American Chemical Society (ACS)

Journal of Physical Chemistry C

scimago Q1

wos Q3

SJR: 0.914

CiteScore: 6.2

Impact factor: 3.2

ISSN: 19327447, 19327455

DOI: 10.1021/acs.jpcc.7b06294

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Surfaces, Coatings and Films

Electronic, Optical and Magnetic Materials

Physical and Theoretical Chemistry

General Energy

Abstract

The development of lead-free, tin-based perovskite solar cells is becoming a pervasive topic; however, the inherent instabilities of such cells have prevented a boost of their power conversion efficiency and a deeper understanding of their fundamental properties. By using the photoelectron yield spectroscopy (PYS) and flash-photolysis time-resolved microwave conductivity (TRMC) techniques, we investigate the effects of air exposure on the valence-band maxima (VBMs) and photoconductivities of tin iodide perovskites (methylammonium cation, MASnI3; formamidinium cation, FASnI3). These perovskites exhibit a shift of the VBM (e.g., from −5.02 eV at 0 min to −5.17 eV at 18 min), deterioration of the PYS profiles, and progressive decrease of the TRMC transients on the minute scale of air exposure. The addition of SnF2 was found to suppress the initial defect-related density of the filled electronic states of MASnI3 and FASnI3, as revealed by PYS, and to partly mitigate the degradation of MASnI3, as revealed by T...

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Nishikubo R. et al. Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskites upon Air Exposure // Journal of Physical Chemistry C. 2017. Vol. 121. No. 36. pp. 19650-19656.

GOST all authors (up to 50) Copy

Nishikubo R., Ishida N., Katsuki Y., Wakamiya A., Saeki A. Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskites upon Air Exposure // Journal of Physical Chemistry C. 2017. Vol. 121. No. 36. pp. 19650-19656.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1021/acs.jpcc.7b06294

UR - https://doi.org/10.1021/acs.jpcc.7b06294

TI - Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskites upon Air Exposure

T2 - Journal of Physical Chemistry C

AU - Nishikubo, Ryosuke

AU - Ishida, Naoki

AU - Katsuki, Yukie

AU - Wakamiya, Atsushi

AU - Saeki, Akinori

PY - 2017

DA - 2017/09/06

PB - American Chemical Society (ACS)

SP - 19650-19656

IS - 36

VL - 121

SN - 1932-7447

SN - 1932-7455

ER -

BibTex |

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BibTex (up to 50 authors) Copy

@article{2017_Nishikubo,

author = {Ryosuke Nishikubo and Naoki Ishida and Yukie Katsuki and Atsushi Wakamiya and Akinori Saeki},

title = {Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskites upon Air Exposure},

journal = {Journal of Physical Chemistry C},

year = {2017},

volume = {121},

publisher = {American Chemical Society (ACS)},

month = {sep},

url = {https://doi.org/10.1021/acs.jpcc.7b06294},

number = {36},

pages = {19650--19656},

doi = {10.1021/acs.jpcc.7b06294}

}

MLA

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MLA Copy

Nishikubo, Ryosuke, et al. “Minute-Scale Degradation and Shift of Valence-Band Maxima of (CH3NH3)SnI3 and HC(NH2)2SnI3 Perovskites upon Air Exposure.” Journal of Physical Chemistry C, vol. 121, no. 36, Sep. 2017, pp. 19650-19656. https://doi.org/10.1021/acs.jpcc.7b06294.

Publisher

American Chemical Society (ACS)

Journal

Journal of Physical Chemistry C

scimago Q1

wos Q3

SJR

0.914

CiteScore

6.2

Impact factor

3.2

ISSN

19327447 (Print)

19327455 (Electronic)

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