Solvent-Coordinated Tin Halide Complexes as Purified
Precursors for Tin-Based Perovskites
Posted on 2017-10-20 - 14:55
A series of solvent-coordinated tin
halide complexes were prepared
as impurity-free precursors for tin halide perovskites, and their
structures were determined by single-crystal X-ray diffraction analysis.
Using these precursors, the tin halide perovskites, MASnI3 and FASnI3, were prepared, and their electronic structures
and photophysical properties were examined under inert conditions
by means of photoelectron yield spectroscopy as well as absorption
and fluorescence spectroscopies. Their valence bands (MASnI3: −5.02 eV; FASnI3: −5.16 eV) are significantly
higher than those of MAPbI3 or the typical hole-transporting
materials 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamino)-9,9′-spirobifluorene
and poly(bis(4-phenyl)(2,4,6-trimethylphenyl)amine). These results
suggest that to develop the solar cells using these tin halide perovskites
with efficient hole-collection properties, hole-transporting materials
should be chosen that have the highest occupied molecular orbital
levels higher than −5.0 eV.
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Ozaki, Masashi; Katsuki, Yukie; Liu, Jiewei; Handa, Taketo; Nishikubo, Ryosuke; Yakumaru, Shinya; et al. (2017). Solvent-Coordinated Tin Halide Complexes as Purified
Precursors for Tin-Based Perovskites. ACS Publications. Collection. https://doi.org/10.1021/acsomega.7b01292
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AUTHORS (13)
MO
Masashi Ozaki
YK
Yukie Katsuki
JL
Jiewei Liu
TH
Taketo Handa
RN
Ryosuke Nishikubo
SY
Shinya Yakumaru
YH
Yoshifumi Hashikawa
YM
Yasujiro Murata
TS
Takashi Saito
YS
Yuichi Shimakawa
YK
Yoshihiko Kanemitsu
AS
Akinori Saeki
AW
Atsushi Wakamiya