Optical properties and interband transitions in the layered compounds SbI3

Mady, Kh. A.; Eid, A. H.; Soliman, W. Z.

doi:10.1007/bf01596368

Cited by 5 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For chlorides and bromides, no large difference is observed going from Sb to Bi, with the bismuthates showing a steeper onset. In contrast, there is a more significant red-shift going from Sb to Bi for the iodido metalates 3 and 6 in line with a large difference in band gaps of the parent halides SbI 3 (2.2 eV) and BiI 3 (1.7 eV) . Overall, this series provides the first data on the absorption properties of an isomorphous family of halogenido antimonates and bismuthates that do not feature a counterion with large influence on absorption, similar to the recently reported series of tropylium compounds .…”

Section: Resultssupporting

confidence: 82%

Band Gap-Tunable, Chiral Hybrid Metal Halides Displaying Second-Harmonic Generation

et al. 2020

View full text Add to dashboard Cite

The introduction of chirality in lead halide perovskites and related metal halide materials allows for an expansion of their unique and useful properties toward nonlinear optics. However, when synthesizing materials based on less toxic metals antimony and bismuth, the large variability in the crystal structures of their metalates and their tendency to form molecular or chainlike anion motifs can be a challenge when creating tunable materials. Here, we show that using a chiral amine template, we can synthesize an isomorphous family of compoundsand Bi; X = Cl, Br, and I) that combines multiple aspects: the compounds are not only chiral but also feature a trilayered arrangement of cations and anions that allows for facile cleavage and exfoliation. The different combinations of E and X allow for a variation of the onset of absorption between 3.35 and 2.09 eV. Using femtosecond laser spectroscopy, we show that our materials allow for efficient second-harmonic generation. Together with a simple synthesis and good stability, this makes these materials promising candidates for linear and nonlinear optical devices.

show abstract

Section: Resultssupporting

confidence: 82%

Band Gap-Tunable, Chiral Hybrid Metal Halides Displaying Second-Harmonic Generation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Across these examples, the optical band gap of the respective bismuth compounds is 0.08-0.20 eV smaller than that of the isostructural antimony compound. This fits well with dimensional reduction deliberations [23] regarding the parent halides, which show optical band gaps of 2.2 eV for SbI 3 [24] and 1.7 eV for BiI 3 , [25] which are isostructural as well. [26] Interestingly, the opposite order of optical band gaps is typically observed in isostructural iodido stannates and plumbates, for example in (CH 3 NH 3 )SnI 3 (1.2 eV) and (CH 3 NH 3 )PbI 3 (1.5 eV), but also in more complex compounds [27] and is ChemPlusChem attributed to the higher electronegativity of tin compared to lead.…”

Section: Resultssupporting

confidence: 83%

Optical Properties and Metal‐Dependent Charge Transfer in Iodido Pentelates

et al. 2023

View full text Add to dashboard Cite

Lead‐free heavy halogenido metalates are currently under intense investigation, as they show similarly promising semiconducting properties as their famous but toxic lead relatives. A major interest in this regard is the understanding and control of optical properties with the goal of designing highly efficient photoconducting materials. Here, we present two isostructural iodido pentelates (Hpyz)3E2I9 ⋅ 2H2O (pyz=pyrazine; E=Sb, Bi). Both compounds are stable up to 100 °C. We observe an inverted order of band gap sizes, 1.91 eV and 1.98 eV for the antimony and bismuth compound, respectively, compared to similar pairs of compounds. We use DFT calculations to confirm that this surprising finding can be traced back to the presence of charge transfer excitations in both compounds.

show abstract

“…70,71 Only two compounds provide insight into the effect of the group 15 metal E: A comparison of the type III complexes E/ Cu/I 7 and 8a (Figure 8) shows that a shift in the onset of absorption toward lower energies when going from Sb to Bi, as might be expected when comparing the color and band gaps of SbI 3 and BiI 3 (red and black and 2.2 and 1.7 eV, respectively). 72,73 Yet this difference is not always so clearcut, as the comparatively similar band gaps in the isostructural 1.9…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

11/15/17 Complexes as Molecular Models for Metal Halide Double Perovskite Materials

Möbs

Heine

2019

Inorg. Chem.

View full text Add to dashboard Cite

Thirteen neutral complexes [E x M y X z -(PPh 3 ) n (L) m ] (E = Bi, Sb; M = Cu, Ag; X = Cl, Br, I; L = solvent) featuring three different motifs were prepared and characterized regarding their structure, stability, and absorption spectra. While not identical in structural motif, the compounds can serve as models for the influence of the composition E/M/X on the optical properties of double perovskites A 2 EMX 6 (A = Cs, CH 3 NH 3 ).

show abstract

Optical properties and interband transitions in the layered compounds SbI3

Cited by 5 publications

References 14 publications

Band Gap-Tunable, Chiral Hybrid Metal Halides Displaying Second-Harmonic Generation

Band Gap-Tunable, Chiral Hybrid Metal Halides Displaying Second-Harmonic Generation

Optical Properties and Metal‐Dependent Charge Transfer in Iodido Pentelates

11/15/17 Complexes as Molecular Models for Metal Halide Double Perovskite Materials

Contact Info

Product

Resources

About