Pressure-induced structural changes cause large enhancement of photoluminescence in halide perovskites: a quantitative relationship

Navrotsky, Alexandra

doi:10.1093/nsr/nwab041

Cited by 6 publications

(4 citation statements)

References 9 publications

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“…In addition, recent studies have shown that the D parameter, used to describe the degree of off-centering distortion in the octahedra, is also considered to be an important parameter to measure the distortion of the inorganic octahedra, and D can be calculated as: 38,39 Here, a i and b i refer to the short and long metal–Cl bond distances in the same direction, respectively. By comparing the calculation results of these parameters, we observed that, in (TMEDA) 3 (Sb 0.5 Bi 0.5 ) 2 Cl 12 ·H 2 O, the bond-length distortion λ oct and the degree of off-centering distortion D of the inorganic octahedra are significantly larger, and the bond-angle distortion σ 2 is slightly smaller than that of (TMEDA) 3 Bi 2 Cl 12 ·H 2 O (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Antimony and bismuth cooperation to enhance the broad yellow photoluminescence of zero-dimensional hybrid halide

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Antimony and bismuth cooperation to enhance the broad yellow photoluminescence of zero-dimensional hybrid halide

et al. 2022

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“…To describe the degree of off-centering distortion of the [MX 6 ] 2– octahedron (M = Mn and Sn, X = Cl, Br and O), we introduce a D parameter: , D = ∑ i = 1 3 | a i − b i | a i + b i where a i and b i refer to the short and long M–X bond distances, respectively, in one direction. The D value for (PBA) 2 MnBr 4 (H 2 O) 2 , (PBA) 2 SnCl 6 , and (PBA) 2 SnBr 4 are 0.019, 0.005, and 0.204, respectively.…”

Section: Resultsmentioning

confidence: 98%

Fine-Tuning Optoelectronic Features in Organic–Inorganic Hybrid Metal Halides: A Focus on the Phenylbutanammonium Series

He,

Liu,

Xiong

et al. 2024

Inorg. Chem.

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Extensive research has been dedicated to exploring the potential applications of organic−inorganic hybrid metal halides in optoelectronics. This study presents findings on three metal halides based on phenylbutanammonium (PBA). Specifically, (PBA) 2 MnBr 4 (H 2 O) 2 and (PBA) 2 Sn(IV)Cl 6 exhibit zero-dimensional structures with P2 1 /c and Pnma space groups, respectively, while (PBA) 2 Sn(II)Br 4 features a two-dimensional structure with P1̅ space group. Under UV excitation, (PBA) 2 MnBr 4 (H 2 O) 2 exhibits double emission arising from the 4 T 1 → 6 A 1 transitions of Mn 2+ in two distinct coordination environments. The emission spectrum of (PBA) 2 SnCl 6 aligns with that of PBACl, suggesting that the luminescence originates from the organic component. The yellow emission of (PBA) 2 SnBr 4 is attributed to the self-trapped excitons. This study introduces the PBA series of compounds, revealing that varying metal ions and halogen combinations can adjust the structural dimensions and influence optical properties. The insights gained from this work serve as a guide for the preparation of efficient white light-emitting diodes.

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“…Br, I) octahedron and the emission efficiency. The D parameter is expressed as follows , where a i and b i refer to the short and long M–X bond distances, respectively, in one direction. The D parameter is determined to be 0.4459 and 0.4417, respectively.…”

Section: Experimental Resultsmentioning

confidence: 99%

One-Dimensional Organic–Metal Halide with Highly Efficient Warm White-Light Emission and Its Moisture-Induced Structural Transformation

Lin

Zhou

et al. 2021

Chem. Mater.

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Molecular low-dimensional organic–metal halide hybrids have shown great potentials as light emitters with excellent color tunability. High photoluminescence quantum efficiency (PLQE) and high color rendering index (CRI) are two essential requirements for them to act as down conversion phosphors to achieve single-component white-light emission. Here, we report an organic–metal halide hybrid [C4N2H12]3[PbBr5]2·4DMSO with a one-dimensional (1D) structure at the molecular level, which possesses a record-setting PLQE of 60% and high CRI value of 84 as a promising single-component white-light emitter. We have also experimentally observed the photoluminescence quenching of [C4N2H12]3[PbBr5]2·4DMSO and its transformation to 0D [C4N2H12]4[Pb2Br11]Br·4H2O, which suggests that the degradation process involves water-molecule replacement and moisture-induced cleavage of 1D lead halide chains.

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Pressure-induced structural changes cause large enhancement of photoluminescence in halide perovskites: a quantitative relationship

Cited by 6 publications

References 9 publications

Antimony and bismuth cooperation to enhance the broad yellow photoluminescence of zero-dimensional hybrid halide

Antimony and bismuth cooperation to enhance the broad yellow photoluminescence of zero-dimensional hybrid halide

Fine-Tuning Optoelectronic Features in Organic–Inorganic Hybrid Metal Halides: A Focus on the Phenylbutanammonium Series

One-Dimensional Organic–Metal Halide with Highly Efficient Warm White-Light Emission and Its Moisture-Induced Structural Transformation

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