TY - JOUR
T1 - 2D Homologous Series SrFMnBiSn+2(M = Pb, Ag0.5Bi0.5; N = 0, 1) and Commensurately Modulated Sr2F2Bi2/3S2
AU - Chen, Haijie
AU - McClain, Rebecca
AU - Shen, Jiahong
AU - He, Jiangang
AU - Malliakas, Christos D.
AU - Spanopoulos, Ioannis
AU - Zhang, Chi
AU - Zhao, Chendong
AU - Wang, Yang
AU - Li, Qiang
AU - Chung, Duck Young
AU - Su, Xianli
AU - Huang, Fuqiang
AU - Kwok, Wai Kwong
AU - Wolverton, Christopher
AU - Kanatzidis, Mercouri G.
N1 - Publisher Copyright:
© 2022 The Authors. Published by American Chemical Society.
PY - 2022/5/30
Y1 - 2022/5/30
N2 - We report three new mixed-anion two-dimensional (2D) compounds: SrFPbBiS3, SrFAg0.5Bi1.5S3, and Sr2F2Bi2/3S2. Their structures as well as the parent compound SrFBiS2 were refined using single-crystal X-ray diffraction data, with the sequence of SrFBiS2, SrFPbBiS3, and SrFAg0.5Bi1.5S3 defining the new homologous series SrFMnBiSn+2 (M = Pb, Ag0.5Bi0.5; n = 0, 1). Sr2F2Bi2/3S2 has a different structure, which is modulated with a q vector of 1/3b∗ and was refined in superspace group X2/m(0β0)00 as well as in the 1 × 3 × 1 superstructure with space group C2/m (with similar results). Sr2F2Bi2/3S2 features hexagonal layers of alternating [Sr2F2]2+ and [Bi2/3S2]2-, and the modulated structure arises from the unique ordering pattern of Sr2+ cations. SrFPbBiS3, SrFAg0.5Bi1.5S3, and Sr2F2Bi2/3S2 are semiconductors with band gaps of 1.31, 1.21, and 1.85 eV, respectively. The latter compound exhibits room temperature red photoluminescence at ∼700 nm.
AB - We report three new mixed-anion two-dimensional (2D) compounds: SrFPbBiS3, SrFAg0.5Bi1.5S3, and Sr2F2Bi2/3S2. Their structures as well as the parent compound SrFBiS2 were refined using single-crystal X-ray diffraction data, with the sequence of SrFBiS2, SrFPbBiS3, and SrFAg0.5Bi1.5S3 defining the new homologous series SrFMnBiSn+2 (M = Pb, Ag0.5Bi0.5; n = 0, 1). Sr2F2Bi2/3S2 has a different structure, which is modulated with a q vector of 1/3b∗ and was refined in superspace group X2/m(0β0)00 as well as in the 1 × 3 × 1 superstructure with space group C2/m (with similar results). Sr2F2Bi2/3S2 features hexagonal layers of alternating [Sr2F2]2+ and [Bi2/3S2]2-, and the modulated structure arises from the unique ordering pattern of Sr2+ cations. SrFPbBiS3, SrFAg0.5Bi1.5S3, and Sr2F2Bi2/3S2 are semiconductors with band gaps of 1.31, 1.21, and 1.85 eV, respectively. The latter compound exhibits room temperature red photoluminescence at ∼700 nm.
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U2 - 10.1021/acs.inorgchem.2c00663
DO - 10.1021/acs.inorgchem.2c00663
M3 - Article
C2 - 35580355
AN - SCOPUS:85131269033
SN - 0020-1669
VL - 61
SP - 8233
EP - 8240
JO - Inorganic chemistry
JF - Inorganic chemistry
IS - 21
ER -