Phase transition in organic–inorganic perovskite (C9H19NH3)2 PbI2Br2 of long-chain alkylammonium

Abid, Haitham; Trigui, A.; Mlayah, Adnen; Hlil, E.K.; Abid, Y.

doi:10.1016/j.rinp.2012.04.003

Cited by 40 publications

(29 citation statements)

References 33 publications

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“…Strikingly, these modes are associated with the CN and NH 3 bonds vibrations of the polar heads of BA cations bound to the inorganic structure. [ 40,41 ] Therefore, this high‐energy phonon is due to these vibrational modes that are not isolated from the inorganic cage motions and, therefore, can couple with the exciton. This direct correlation, to the best of our knowledge, has not been considered before.…”

Section: Photophysicsmentioning

confidence: 99%

Influence of the Vibrational Modes from the Organic Moieties in 2D Lead Halides on Excitonic Recombination and Phase Transition

Moral

Germino

Bonato

et al. 2020

Advanced Optical Materials

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2D metal halide semiconductors have been intensively studied in the past few years due to their unique optical properties and potential for new‐generation photonic devices. Despite the large number of recent works, this class of materials is still in need of further understanding due to their complex structural and optical characteristics. In this work, a molecular‐level explanation for the dual band emission in the 2D (C4H9NH3)2PbI4 in its bulk form is presented, demonstrating that this feature is caused by a strong exciton–phonon coupling. Temperature‐dependent photoluminescence with Raman and IR spectroscopies reveals that vibrations involving the C‐NH3+ butylammonium polar head are responsible for this exciton–phonon coupling. Additionally, experimental shifts in the mean phonon frequencies coupled with the electronic excitation, combined with a theoretical model, show that these vibrational modes present a soft‐mode behavior in the phase transition of this material.

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Section: Photophysicsmentioning

confidence: 99%

Influence of the Vibrational Modes from the Organic Moieties in 2D Lead Halides on Excitonic Recombination and Phase Transition

Moral

Germino

Bonato

et al. 2020

Advanced Optical Materials

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“…Within the inorganic component, the Bismuth bromide octahedra can be connected in one of three ways: face, edge or corner sharing forming naturally isolated molecules (0D) [14][15][16], infinite chains (1D) [17] or two dimensional (2D) networks. In conjunction with some current research works on these metal halides compounds, the crystal structure, optical properties and vibrational studies of many organic-inorganic crystals have been investigated in our laboratory [18][19][20][21][22]. Our last two published papers have been devoted to the X-ray diffraction, optical properties and vibrational studies as well as DFT calculations of C 4 H 16 N 3 BiBr 6 [21] and (C 6 H 14 N) 3 Bi 2 I 9 [22].…”

Section: Introductionmentioning

confidence: 99%

Structural, vibrational and optical properties of a new self assembled organic–inorganic nanowire crystal (C6H14N)2[BiBr5]. A Density Functional Theory approach

Dammak

Triki

Mlayah

et al. 2015

Journal of Luminescence

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“…[1,2] Particularly, hybrid organic-inorganic compounds based on halogenometallates such as Sb, Sn, and Bi…. [3,4] have been widely explored due to their interesting physical properties and their application in new technology such as the manufacture of devices as well as their ability to present phase transitions. In fact, much spate of interest has been devoted to the development of a new multifunctional generation of organic-inorganic structures with the general formula A 2 SnCl 6 (A = organic cation) displaying new interesting properties.…”

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confidence: 99%

Synthesis, Vibrational Spectroscopy and Optical Study of Bi-Tetrabutylphosphonium Hexachlorostannate

Mbarek¹,

Gzaiel²,

Oueslati³

et al. 2021

Preprint

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The single crystals of bi-tetrabutylphosphonium hexachlorostannate were grown by solvent evaporated method and characterized by X-ray powder diffraction, Raman spectroscopy and optical study. The X-ray powder diffraction indicates that it was crystallized in the monoclinic system, with C2/c space group. Besides, temperature-controlled X-ray diffraction show that the [P(C4H9)4]2SnCl6 compound indicate the presence of two phase transitions detected at 388 and 403 K. The evolution of Raman line shifts, “ν”, and the half-width, “Δν”, versus temperature show some singularities associated with the transitions, suggesting the important role of the anionic parts ((SnCl6)2-). Besides, the results of the Raman study confirms the conclusion drawn from the X-ray powder diffraction measurements that the phase transition are located near 388K and 403K.Furthermore, an optical absorption measurement confirms the semiconductor nature with a band gap equal to 3.46eV.

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Phase transition in organic–inorganic perovskite (C9H19NH3)2 PbI2Br2 of long-chain alkylammonium

Cited by 40 publications

References 33 publications

Influence of the Vibrational Modes from the Organic Moieties in 2D Lead Halides on Excitonic Recombination and Phase Transition

Influence of the Vibrational Modes from the Organic Moieties in 2D Lead Halides on Excitonic Recombination and Phase Transition

Structural, vibrational and optical properties of a new self assembled organic–inorganic nanowire crystal (C6H14N)2[BiBr5]. A Density Functional Theory approach

Synthesis, Vibrational Spectroscopy and Optical Study of Bi-Tetrabutylphosphonium Hexachlorostannate

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