Stable organic-inorganic hybrid bismuth-halide: Exploration of crystal-structural, morphological, thermal, spectroscopic and optoelectronic properties

Hu, Xinru; Zhu, Yin; Wang, Jilin; Zheng, Guoyuan; Yao, Disheng; Lin, Bencai; Tian, Nan; Zhou, Bing; Long, Fei

doi:10.1016/j.molstruc.2022.133102

Cited by 10 publications

(2 citation statements)

References 31 publications

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“…These changes make them suitable for various applications, including data storage, photonic devices, optoelectronics and biosensors. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] Phase-transition materials exhibit energy utilization and temperature control through energy exchange with the external environment, which makes them highly promising candidates in relevant fields. As a kind of high-tech material, crystal phase-transition materials have always been a subject of great interest.…”

Section: Introductionmentioning

confidence: 99%

Dielectric and optical properties of a new organic–inorganic hybrid phase transition material

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Dielectric and optical properties of a new organic–inorganic hybrid phase transition material

et al. 2023

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“…Bismuth is the only nontoxic and inexpensive heavy metal and abundant in nature, which has been used to substitute toxic Pb-based hybrid metal halides because of their same electron configuration of 6s 2 and similar ionic radio and electronegativity. , Also, the Bi-based hybrid metal halides with 0D octahedral units exhibit good broadband PL properties, which attracted our research interests. − Herein, we report on a 0D organic–inorganic hybrid Bi-based hybrid metal halide, (4cmpyH) 2 BiCl 5 ( 1 , 4cmpy = 4-(chloromethyl)pyridine), which is characterized by isolated bioctahedral [Bi 2 Cl 10 ] 4– dimers surrounded by rigid, conjugated, and luminescent organic templated cations. This material is able to show intrinsic broadband yellow emissions under blue light (468 nm) excitation with a PL quantum yield (PLQY) of 5.56% and a long lifetime of 22.33 μs.…”

Section: Introductionmentioning

confidence: 99%

Blue Light-Excitable Broadband Yellow Emission in a Zero-Dimensional Hybrid Bismuth Halide with Type-II Band Alignment

Gao

Zhu

et al. 2022

Inorg. Chem.

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Zero-dimensional (0D) organic–inorganic hybrid metal halides have captured broad interest in the lighting and display fields because of their unique electronic structures and splendid broadband emission properties. However, the blue light-excitable broadband yellow emissions have been rarely reported in 0D hybrid metal halides. Here, we design a new 0D bismuth hybrid, (4cmpyH)2BiCl5 (1, 4cmpy = 4-(chloromethyl)pyridine), featuring isolated edge-sharing bioctahedral [Bi2Cl10]4– dimers surrounded by rigid, conjugated, and luminescent organic [4cmpyH]+ cations. This material is able to show intrinsic broadband yellow emissions under blue light (468 nm) excitation with a long lifetime of 22.33 μs and a photoluminescence (PL) quantum yield of 5.56%. Solid-state UV–vis spectroscopy studies prove that introducing organic π-conjugated groups into hybrid systems leads to absorption in the visible light region, in favor of photoexcitation by visible light. By comparing the PL data of 1 and the organic template at room temperature and measuring variable-temperature PL spectra of 1, the blue light-excited broadband emission of 1 can be attributed to the synergistic emissions of intramolecular π → π* and n → π* transitions in the organic cations and triple self-trapped exciton (STE) states centralized at the highly distorted Bi–Cl lattices. Moreover, density functional theory calculations reveal a type-II band alignment in 1 with an indirect band gap of 2.64 eV, which is together determined by organic cations and inorganic bioctahedral units. To the best of our knowledge, our work represents the first report on the blue light-excitable STE emission in 0D Bi-based metal halides, which will largely promote the rapid development of novel high-performance yellow light-emitting materials.

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Cation Engineering Perovskite Cathodes for Fast and Stable Anion Redox Chemistry in Zinc‐Iodine Batteries

Gong,

Zhang,

Liang

et al. 2024

Adv Funct Materials

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Zinc‐halogen batteries are promising for sustainable energy storage, offering high redox capacities at economical price points. However, they are hindered by issues such as the irreversibility caused by the dissolution of intermediates and the sluggish charge transfer, which limit their widespread adoption. Addressing these issues, bismuth‐iodide perovskite cathodes are employed as a halogen element enriched model system. These perovskite cathodes demonstrate considerable anion redox capacities. In a combined simulation and experimental study, it is uncovered that the (BAD)BiI4 (BAD+ denotes benzamidinium) cathode, greatly improves interactions with iodine species and boosts charge transfer capability compared to its (BA)BiI4 (BA+ denotes benzylaminium) counterpart. These enhancements can be attributed to the synergistic effects arising from stronger Bi−I···I halogen bonds and C═N─H···I hydrogen bonds. The (BAD)BiI4 cathode attains a reversible I−/I0 redox chemistry with 92% capacity retention after 30 000 cycles at a current density of 10 A g−1I, outperforming previously reported anion redox batteries. Additionally, the defect‐tolerant property and the I−/I0/I+ conversion of the (BAD)BiI4 are elucidated. The I5− forms a notably stronger bond with (BAD)BiI4 in comparison to I3−, which effectively mitigates polyiodide shuttling. These advantageous characteristics highlight the promise and adaptability of the developed perovskite cathodes for high‐performance anion redox chemistry.

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Stable organic-inorganic hybrid bismuth-halide: Exploration of crystal-structural, morphological, thermal, spectroscopic and optoelectronic properties

Cited by 10 publications

References 31 publications

Dielectric and optical properties of a new organic–inorganic hybrid phase transition material

Dielectric and optical properties of a new organic–inorganic hybrid phase transition material

Blue Light-Excitable Broadband Yellow Emission in a Zero-Dimensional Hybrid Bismuth Halide with Type-II Band Alignment

Cation Engineering Perovskite Cathodes for Fast and Stable Anion Redox Chemistry in Zinc‐Iodine Batteries

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